DE1607698A1 - Housing for air filter - Google Patents

Description

1607898

Take up house for; Air f il t e r

The irf iaduag. ibetriff ΐ .äin- 4ufim | mie ^; ha.ttSe _v like. they insbesaniere, for nuclear facilities .Use

Air purification in core technical systems is used in cases where this is the case; Separation of radioactive suspended matter is ^: _y highest; Requirements placed on the separation efficiency of the particulate filter. The same applies mutatis mutandis to the housing for these lilt er'.sowie; .for the., necessary decontamination and exchange measures for the radioactively contaminated and thus used filter media .from the receptacle housingso - ^

To meet the requirements to ^, müssen.die receiving housing for ^ uftfilterzellen completely gastight be ₀ Die.Ablagerung of radioactive dust inside the case, especially on the dust side - must be restricted to a minimum, ie no, .Yörsprünge, no protruding edges and the like deposition surfaces must be present, junction edges and sealing surfaces must be perfectly flat so that no lifting air can enter or exit at any point. jjer.Ä-ufbau must also allow that "several receiving enamel"; that is, several Jilter cells, to larger Eilter-

can be put together, -w-if only one ' This or screw assembly is required it must be ensured that the maintenance, i.e. the replacement of contaminated putters with new IPlterpacl ^ s, with little expenditure of time and with a high degree of security against radiation exposure. can be carried out.

■ in the practical .Gebrai ch bef indliahen,

-'ieh -: ... urjo öntspre'cilfön although the requirements made.-It but mostly a very considerable amount of time to achieve this goal

109 838/0239 ^^ ^IGINAt

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Licher expenditure on devices. operated and a large Amount of material required. The housings are welded together from individual pieces of sheet metal, with considerable sheet metal thicknesses must be applied in order to avoid the occurrence of welding To be able to counter delay effectively. In addition, weld seams of a considerable length are required, and it is not easy to produce all of these weld seams to be made completely gas-tight.

The purpose of the invention is .es, a housing for air filters indicate that the disadvantage. well-known institutions avoids. In particular, the gas-tight housing should be able to be produced with a minimum number of weld seams and with planar seams Contact and sealing surfaces must be provided. The .insertion The housing should be designed with the simplest of gowns so that the replacement of the spring packs is easy and with little Time expenditure can take place safely.

This object is achieved according to the invention in that the rear wall, two side walls and two rim parts of the front of the housing as well as the planar edges for the receiving housing a sheet metal strip produced in one piece by folding and bending are. To complete the housing on the The slide-in side has two identically designed by folding and bending manufactured rim parts equipped. This housing body is to be welded with a minimum of to produce work. There are only the two edge parts with the outer housing body through extremely short weld seams to connect ,, .- ■■ "" ■■ - - .-.

The bent flange edges are at least on _; -the flälf te of i lying twice successively bent to enlarge in this way the stability of the housing and ⁿ = lanschbreite · .. ':. to create the necessary space for the assembly of several housings ,,. The required sealing frame for the connection of the '''housing''to a pipe or the like carrying air or stagnant air is welded together from bent and folded pieces of sheet metal. The flange of this

., ■■■. 109830 / 0239- _6A D ORIGINAL

Eaiimeus is welded or dotted on the ^ ans-chrander de-s housing sr p / unk ^ fcwe ise _% , whereby - preferably the edges of the bent - 5Q.ansc.iir and.es and the edge of the flange of the sealing frame butt against each other * In this way, a flat surface is created that prevents lifting air from occurring at these points when mounting or * assembling the housing with other parts -'_ ' ^Λ

This construction of the housing makes welding work necessary over a length which corresponds roughly to a quarter of the weld seam length, which is necessary for identical and equally large buildings of a known type. . Ärmespannungen the thermal expansions and ¥ therefore are so low that it is possible to manage with B-reehstärlcen amount to "about one third of the otherwise necessary Bxechstärke Ea succeeds, therefore, \ under low workpiece off on wall a completely gas-tight size * - to create noses, because the extraordinarily short welded seams can be made tight without further ado.

]} he rim parts are provided with curved edges that becomes more elliptical towards an edge surrounding the “insert opening” Shape supplemented On this edge of the ellipse, a slotted, dovetail-shaped grooves, Ring made of rubber, plastic or the like with pretension self-sealing raised. They dovetail grooves serve to hold a rubber ring that secures the maintenance bag. The rubber ring, preferably with a annular approach is provided, serves as a seal for the Housing flap. This through the. Housing construction enabled design of the slide-in side allows rapid and safe replacement of the filters ««,

In the drawings, a preferred embodiment is the Invention shown. .. '■

■ 3s show BAD ORIGINAL

■■■ '.. - 4 - .-

Fig. 1, 2 and 3 the shape of the sheet metal strips from which the Items are manufactured;

Fj.g. 4 * and 5 in. Perspective Oar position the assembly of the individual parts to the final housing, which is in

Fig. 5a is shown. .

Fj_g ₀ 6 is a vertical section through the finished

Housing and
7f, 8 and 9 are sections on an enlarged scale through the upper side of the insertion opening.

In Fig. 1, the sheet metal strip 1 is shown, which by B ^ e ^ ening and folding along the dash-dotted line 2 to the rear wall 3 and the two side walls 4 of the receiving housing (Fig. 4) is molded. The sheet metal strip 5 according to Fig. 2 is shown by bending and folding along the dash-dotted line line 2 formed into a board edge part 6, two of which are necessary 'to put the G-housing on the insertion side to be completed (Fig. 4). Equipping the one-piece molded housing part 3/4 with the two the same designed rim parts 6 is done by welding. The weld seams to be provided at 7 only have one short length and, as a result, thermal expansions and -tension does not arise or in very little hatred. ■

Simultaneously with the integral-n forming the rear wall 3 and side walls 4 expectant _s F ^ anschränder 8 integrally formed. On at least half the flange width, the sheet metal is bent up in a double lying position, as can be seen at 9 (s * also FIGS. 7 and 8). A sealing frame is welded or punctured onto these flange edges 8. This sealing frame is assembled from four individual pieces, which are made from sheet metal strips 10 (FIG. 3) by bidding and folding along the dot-dash line 2. The parts are mitred and welded together at the joint edges.

109638/0239

The sealing frame 10 is provided with a planar 11, the dimensions of which are chosen so that they fit on the non-bent half of the edge of the flange abut one another _{0 The} wall reinforcement by the bent section 9 and the support of the flange 11 results in a flat surface that increases strength, which is favorable for the assembly of several such receptacle housings on top of one another by welding or screwing, so that a connection can be made that freely of leaks. -

The sealing frame 10 fits well into the overall structure one, and he can thanks to the shortness of the required welds be manufactured in such a way that it is smooth and even or offers ground surfaces for sealing;

_{B o} rdrandteile with curved edges 13 are provided on the insertion side of the receiving housing. These bent edges 13 are provided directly in the section of the exit sheet metal strips 1 (Fig. 1) and 5 (Fig. 2) <, S ± e complete in the assembled housing to an edge of approximately elliptical shape surrounding the insertion opening on this elliptical edge 13 a ring 14 made of rubber or plastic is pulled on. It is provided with a bolt 15 with which it is pulled onto the edge 13 in a self-sealing manner under pretension. In addition, as shown in FIG. 7 and 8 can be seen V dovetail-shaped grooves 16, they serve for example - mi: t. Help an endless rubber ring 17 to fix the replacement bag 18 necessary for changing the filters in a gas-tight manner.

in Fig. 9 shown, the attached rubber or » Plastic ring 14a in a modified form, cylindrical, have downwardly tapering elevations I6a, over which the protective bag 18 slipped over and with an IJ-profxl-shaped Clamping ring 21 is clamped gas-tight, which

109838/0239

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is neither endless nor provided with a Scimell fastener «.

If the shape of the ring 14 with an annular shoulder 19 is provided, this can be used to close the housing flap 20 to seal.

The receiving housing according to the invention is made of a small one Number of parts that are easy to manufacture using a minimum amount of welding work. ] Pür the replacement of the filter is with simple smocks on the. Drawer side taking precautions, taking the necessary Components are molded in one piece with the base parts, so that there is no welding work here is required. Corners and protruding edges, which could lead to the accumulation of dust, are avoided.

109838/0239

Claims (8)

Claims ■ 1. Housing for air filter, inst) special; for core decimals Systems, characterized in that; Rear wall (3), two side walls (4) and two edge parts (13) the front of the housing and the flange edges (8) from a sheet metal strip (I) by folding and bending made in one piece and to complete the housing on the slide-in side with two gleach-shaped, edge parts produced by folding and bending (6) are equipped. -. ^ v 2. receiving housing according to claim 1, characterized in that that the j? lanschrähder (8) are at least halfway through the j? lan width double lying on top of each otherv gebpgeh are (9) 3. Aufiialimegehäuse to A _n claim 1. and 2, characterized by one of curved and bent sheet tu eken welded together Sichtungsrahmen (10) which is aufgeseüweisst with its flange (11) on the Jlanschrander (β) of the housing or aufgepunktet wherein _{YOr2Ugsweise:} the edge of the bent Planschrandes (9) and the edge of the flange (11) of 33ichtungsrahmens - ⁽¹ IO) each s tos sen. ν - "■;: ·,:". · ".- ■ -" ■ 4. Aufiialime housing according to claim 1 to 3, thereby draws that aie edge parts with bent hands (13) are provided, which become a chub opening of the bins surrounding hand of elliptical shape. 109838 / O239 5. receiving housing according to claim 4, characterized in that that on the elliptical edge (13) a slotted, ring (14- or 14a) made of rubber, plastic or the like. with Preload is tightened in a self-sealing manner. 6. receiving housing according to claim 5, characterized in that that the ring. (14) with at least one dovetail-shaped Groove (16) is provided. 7. receiving housing according to claim 5, characterized in that the ring (14a) with at least.einer wart-shaped, tapering downward, elevation (16a) provided is ο 8. A storage box of _n demanding 5, 6 or 7 ,. characterized in that the ring (14) has an annular shoulder (19) serving to seal the housing closure flap (20). 1098: -V 0239 Lee rs ei t e