DE1993359U - LOCKING DEVICE FOR VENTILATION SYSTEMS IN PROTECTIVE STRUCTURES. - Google Patents

Description

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BE 12 * 373

Luwa AG. .""' Zurich, Switzerland

Ventilation device for protective structures

The present innovation relates to a ventilation device for shelters with at least one explosion protection valve to absorb explosive pressure waves occurring in the outer atmosphere and a filter downstream of this in the direction of the pressure wave to hold back the contaminants contained in the air, the ventilation device being one with the outside atmosphere connected inlet port; has an air-conducting connection to the filter and an outlet opening opening into the protective space, so that the protective space is air-conductingly connected to the outside atmosphere during normal ventilation operation * - I'- "'::;

The final facility according to the rate of inflation is characterized by that the explosion protection valve and the miter in are arranged in a common, pressure-resistant housing and in the direction of flow of the air after the explosion protection valve Expansion space is arranged, which is bounded by the! Filter, the! Filter mat at least partially on its boundary walls is supported by grids.

The arrangement of the explosion protection valve and the miter in a common housing gives the advantage of being a compact one Design type. The space savings achieved in this way result in lower manufacturing costs and shorter installation times and lower costs on the part of the customer, as a result of which a considerable reduction in the cost of the device can be achieved. In addition, the degree of separation of the used miters superior to that of the sand filter.

An example embodiment of the closure device according to the firing is shown in the drawing.

Show it:

Fig. 1 shows a longitudinal section through the terminating device along the line I-I in Fig. 2.

Mg. 2 shows a longitudinal section through the closing device along the line II-II in Mg. 1.

In the figures, 10 generally denotes a box which is fastened with screws 12 to an inner wall 16 of a shelter. The box 10 contains an opening on the wall side 11, which is connected to an opening 14 in the protective wall 16 in an air-conducting manner. The latter stands with the outer one Atmosphere in "connection, the air flowing through the opening 14 and 11 into the box 10. The interior of the box is opposite the shelter by means of a firmly resting on the wall and guided in a groove 21 of the box 10 Seal 22 sealed.

The box 10 contains an explosion protection valve 18 and a dust filter connected downstream of this in the flow direction of the air 20 and has an outlet opening 61 for the purified air.

Inside the box 10 is parallel to the wall 16 and in the · A partition wall 24 is arranged at a distance from the same, on which an explosion protection valve 18 is known on the wall side Type is attached airtight. On the side of the partition 24 facing away from the wall 16 there is a chamber 28, which is delimited by a further wall 50 arranged parallel to and at a distance from the partition wall 24. The walls 24 and 30 each have an opening 26 and 34, respectively. Between the walls 24,3 ^ 0 and supported on the latter is a baffle plate 32, which the opening 34 ■ at a distance from the same covered.

The box 10 points on the side facing away from the wall 16 an opening 38 which is closed by a cover 40. The cover 40 is secured by screws 42 which are inserted into the Box 10 einsehraubbar are held, with between Deekel 40 and box 10 a seal 46 is attached.

The part of the box 10 located between the cover 40 and the wall 30 is in an expansion space 36 and one of these comprehensive chamber 44 divided for the clean air. The expansion space 36 is with the inlet opening 11 on the Openings 34 »26 and the explosion protection valve 18 in an air-conducting connection. Like in Pig. 1, the expansion space 36 is delimited by a TJ-shaped filter 20. The filter 20 has a filter mat 70, with two free-standing legs 80, 82 and a web 72 connecting these legs U-shaped filter 20 separates the expansion space 36 from the chamber 44 and the open side is slipped over the opening 34. The end faces of the U-shaped filter 20 are closed off by two box walls 48, 50 (FIG. 2). The filter mat 70 is along the U-legs 80, 82 by wide-meshed grids 63, 64, 66, 68 supported. The edges of the grids 63, 64, 66, 68 facing the end faces of the filter mat 70 are together with the legs 80, 82 of the filter mat 70 in two parallel rails 52 (FIG. 2) extending towards and at a distance from one another, which in turn are fastened to the box walls 48, 50 are. The free-standing ends of the U-shaped filter mat handles 80, 82 facing longitudinal edges of the grids 66, 68 or

63, 64 are connected to one another by connecting grids 84, 86. Which delimit the inner walls of the legs 80, 82 " Grids 63, 68 are through a along the inner wall of the FiI-tersteg 72 extending lattice web 71 connected to one another. The parallel to the box cover 40 and facing this Wall of the PiItersteges 72 is through an air-impermeable Cover plate 74 covered, which the parallel to the box walls 56, 57 extending grids 64, 66 partially laterally includes. The cover plate 74 is supported on the two facing longitudinal edges of the grids 64, 66 and is through a screw 76 provided with a spherical screw head 77 and the screw nut 79 belonging to this on the lattice bar 71 attached.

The lid 40 of the box 10 lies with a recess 41 on the spherical screw head 77 and presses the freestanding Free ends of the U-legs 80, 82 delimited by the grids 84, 86 against those arranged on the partition wall 30 Sealing strips 69. The entire filter insert can therefore be pulled out of the box 10 at the screw head 77.

The filter space 44 has an outlet opening on the wall 56 61 for the purified air, which is supplied via the connection 62 with the suction connection of an air delivery device (not shown) connected is. Upstream of the outlet opening 61 is a Impact plate 67, which extends parallel to the box wall 57 and the opening 61 at a distance from the wall

56 covered.

In the lying between the wall 16 and the partition wall 24 Chamber 54 has a drain opening 58 through which Condensation water formed in the wall opening 14 can flow into a container 60.

If the ventilation device of the air raid shelter in Operation is, a negative pressure is generated by the same, which contaminated outside air through the openings 14 and into the box 10 and through the explosion protection valve 18 into the chamber 28 and then through the opening 34 into the Expansion chamber 36 sucks. Yon there the air comes through the J filter medium 70, collects in the chamber 44 and. Finally passes through the opening 61 into the air conveyor and from there to the shelter.

When an explosive pressure wave occurs in the external atmosphere, the explosion protection valve closes 18 suddenly. The during the closing process through the explosion protection valve 18 penetrated pressure wave hits the baffle plate 32 in the chamber 28, is reflected several times and, after bypassing it, enters the Expansion space 36, where it expands and continues to lose energy. The directly in the direction of the opening 61 through the "· .. air passing through the filter mat 70 is through the baffle plate

tv * *> · ι 64 reflects and thereby loses speed. By

the repeated deflection "of the pressure wave and its expansion in the spaces 36 is damage to the Tiltermediums 7Ö ^1; ■ _avoided; - ^/:.....: '-' ■ - ..; ._ '" .-

Subject for a longer period of operation or after an exceptional one The PiIter should be able to be exchanged due to dust exposure.

For this purpose, after loosening the screws 4-2, the cover 40 is removed from the box 10. The entire filter insert 20 can now be easily pulled out of the mortar bars 5: 2 by means of the ball handle 77. . '. .: ■ ^: ;;;.

It is of course possible to make the box 10 'air at large en - ¹ amounts to enlarge so that a plurality of shut-off units and liltereinriehtungen can be arranged in it.

Claims (6)

RA. 26 5 Claims to Protection 1. Ventilation device of protective rooms with at least one: explosion protection valve and a filter downstream of this in the propagation system of the pressure wave to hold back the contaminants contained in the air, the ventilation device having an inlet opening connected to the outside atmosphere, an air-conducting connection to the filter and an in has an outlet opening opening into the protective space, so / that the protective space is connected to the outside atmosphere in an air-conducting manner during normal ventilation operation, characterized in that the explosion protection valve and the filter are arranged in a common, pressure-resistant G housing and in the direction of flow: the ^J Air after the explosion protection valve, an expansion space is arranged which is delimited by the filter, the filter mat of which is at least partially through on its delimitation walls. Gritter is supported. /. '■■ "' .- ffifc; 2. Ventilation device according to claim '1, characterized in that that between the explosion protection valve and: the filter a Baffle plate is arranged,;. ". '■".:. .-; ■ -; ':: ■;:; - 3. Ventilation device according to claim 1, characterized in: that the filter is U-shaped around an air passage opening ■ is arranged, the air passage opening opposite ■■ - 9 the overlying rope of the filter is impermeable to air. 4. Ventilation device according to. Claim 3, characterized in that that the air-impermeable part of the liter via a support member is supported on an indentation of the housing cover Is. - "· .; 5. Ventilation device according to claim 4, characterized in that that the support member is glelchzig as a handle, for replacement serving the mother. 6. Ventilation device according to claim 1, characterized in that that between the outlet opening of the air, out of the housing and the side of the immediately adjacent to this opening Filter an air-impermeable plate is arranged · .. May 6, 1968
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