AT403U1 - LOCKING DEVICE FOR OPENINGS - Google Patents

Description

AT 000 403 Ul

The invention relates to a closure device for opening according to the preamble of claim 1.

Hot water storage tanks are already known in which the container for the liquid is surrounded by an insulating hood. The pipes for the container are led through openings in the insulating hood to the connections of the container. The disadvantage here is that the air can penetrate into the interior of the insulating arbor through the air gap that remains, thus causing the liquid in the container to cool down quickly and also creating moisture in the insulating material

The present invention has for its object to provide a closure device for openings, which enables a tight closure of this opening

This object of the invention is achieved by the features stated in the characterizing part of claim 1. The main advantage of this solution according to the invention is that the chimney effect is prevented by covering the openings in the insulating hood of the hot water tank, i.e. that no air can penetrate into the interior of the insulating hood, thereby preventing the container or the liquid from cooling.

Another unforeseeable advantage is that when the space between the container and the insulating hood is foamed, no foam can escape from the openings, thereby preventing the surface of the hot water tank from being reworked. Furthermore, it is also advantageous that due to the different density of the flange and the core part of the closure device, in addition to a tight contact of the flange on the outer circumference around an opening, the escape of a liquid foam, for example between a container and the insulating hood at the outlet in the area the closure device is prevented. This is because the liquid foam penetrates into the open-line, low-density material of the core part, which acts like a sponge, which reduces the flow rate and causes the foam to react immediately, which, on the one hand, increases the pressure effect of the foam, which causes it to squeeze out 2 AT Ul could cause the closure device, is reduced, because when the foam material reacts, this expands and the spongy core part of the closure device inflates, so that it sticks even more firmly in the opening. In addition, a tight seal between the pipeline and the circumference of the opening is achieved.

However, an embodiment according to claim 2 is also advantageous since the closure device can thereby be easily pushed over the pipeline.

An embodiment according to claim 3 is also advantageous, since this prevents a good seal against the ingress of air into the insulating hood.

However, it is also possible to proceed as claimed in claim 4, since this enables the closure device to be produced inexpensively.

However, an embodiment according to claim 5 is also advantageous, since this prevents the entry of air through the flange of the closure device.

Another advantageous embodiment of the closure device is. placed under protection in claim 6. It is advantageous with this arrangement that the closure device completely surrounds the opening and thus prevents the ingress of air or the escape of a self-reacting foam.

Another advantageous development according to claim 7 enables exact positioning of the closure device on the pipeline, which can only be changed with a certain amount of force.

However, an embodiment according to claims 8 and 9 is also advantageous, since this allows the flange to be adapted well to the surface of an insulating hood, which is preferably oval.

However, a further development according to claim 10 is also advantageous since the flange of the closure device can thereby be produced in a simple manner.

Furthermore, the invention also comprises a method as specified in the preamble of claim 11. 3 AT 000 403 Ul

This method is characterized by the features in the characterizing part of claim 11. It is advantageous with this method that it enables simple production of the flange.

However, a procedure according to claims 12 and 13 is also possible, since this prevents the core part from being reworked to the appropriate height.

Finally, the design according to claim 14 is also advantageous, since this prevents the air from penetrating through the material of the flange.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings.

Show it

Figure 1 shows a closure device according to the invention and a hot water tank with a lined container in a simplified diagram.

Figure 2 shows a part of the hot water tank with the closure device according to the invention in a side view, according to the lines Π-Π in Figure 1;

Figure 3 shows the manufacturing method of the closure device according to the invention in Be tenansicht, cut along the lines ΠΕ-ΙΠ in Fig. 4.

4 shows a plan view of the base body of the closure device according to the invention;

Fig. 5 shows the manufacturing process for molding the closure device according to the invention in side view.

1 shows a hot water tank 1 for keeping a liquid 2, in particular water, warm. The hot water tank 1 consists of a container 3 in which the liquid 2 is stored. The container 3 is surrounded by an insulating hood 4, which consists of two L-shaped half-shells 5, 6, a lid 7 and a base ring 8. By attaching the insulating hood 4 AT 000 403 Ul, the heat of the liquid 2, which is kept in the container 3, can be stored over a longer period of time.

The half-shells 5, 6 are e.g. Connected to one another via grooves or a joint arrangement and movably detachably coupled on the opposite side of the half-shells 5, 6 via a coupling device 9. Subsequently, the cover 7 is placed on the two half-shells 5, 6 and connected to the half-shells 5, 6 by means of a retaining ring 10, whereby insulation of the transition between the half-shells 5, 6 and the cover 7 is ensured. In order to achieve a uniform image of the hot water tank 1, the bottom ring 8 can be attached to the half-shells 5, 6 on the side of the container 3 opposite the cover 7. The half-shells 5, 6 are designed in such a way that they simultaneously contain a jacket forming around the container 3 and a base part forming for the container 3, on which the container 3 can be placed.

In order to fill the container 3 with liquid 2, in particular water, or to remove liquid 2 from the container 3, pipes 11, 12 protrude through the half-shells 5, 6 or the cover 7 or the base part into the container 3 to achieve a sealing of the pipes 11, 12 with respect to the half-shells 5, 6, a closure device 13 is put over the pipes 11, 12, thereby preventing the heat from escaping.

FIG. 2 shows a section of the hot water tank 1 according to the lines Π-Fig in FIG. 1 with the closure device 13 according to the invention.

From the sectional view it can be seen that the half-shells 5, 6 are L-shaped, that is to say that the bottom part is connected directly to the side walls of the half-shells 5, 6, so that the container 3 rests on a contact surface 14 of the bottom part of the half-shells 5, 6 can be put on. In order to avoid that the half-shells 5, 6 move apart when the container 3 is inserted, the half-shells 5, 6 are connected on one side via a groove or joint arrangement and on the opposite side the half-shells 5, 6 are over the coupling device 9 clamped together. The coupling device 9 consists of an eccentric lever 15, a locking band 16 and a holding catch 17, whereby the two half-shells 5, 6 can be firmly clamped together and released again.

Furthermore, it can be seen that the half-shells 5, 6 and the cover 7 consist of several layers 18 to 22. Good thermal insulation of the container 3 can be achieved by constructing the half-shells 5, 6 from several layers 18 to 22. From this illustration, 5 AT 000 403 Ul can also be seen that the cover 7 is fastened via the retaining ring 10 with the half-shells 5, 6 by placing the retaining ring 10 on the half-shells 5, 6.

In order to fill the container 3 with liquid 2 or to remove the liquid 2 from the container 3, an opening 23 is provided for the pipes 11, 12. The pipes 11, 12 can thus be connected to the container 3 or to its connections 24, 25.

So that the pipeline 11 or 12 can be positioned exactly at the connection 24 or 25, the opening 23 has a larger diameter 26 compared to a diameter 27 of the pipeline 11 or 12. This has the advantage that manufacturing tolerances of the openings 23 and the connections 24 and 25 can be compensated for.

However, in order to cover and isolate the opening 23 or the air gap between the pipes 11, 12 and the half-shells 5, 6, the closure devices 13 are pushed onto the pipes 11, 12 and can then, after the pipe 11, 12 is connected to the connection 24, 25 of the container 3, are pushed into the openings of the half-shells 5, 6, as a result of which the air gap between the pipes 11 and 12 and the half-shell 5, 6 is sealed.

The closure device 13 consists of a material that can be easily deformed, e.g. Foam, whereby the closure device 13 can be adapted exactly to the surface of the half-shells 5, 6 in the case of a curved surface of the half-shells 5, 6. If the gaps between the pipes 11, 12 and the openings 23 were not closed with the closure device 13, the warm container 3 would create a chimney effect, whereby the air, as schematically " shown by arrows, would enter through the opening 23, which is at floor level of the container 3, into the space between the container 3 and the insulating hood 4 and would flow again along the side walls of the container 3 via the further opening 23, whereby the container 3 and thus the liquid 2 cool down rapidly.

Furthermore, after the closure device 13 has been positioned on the pipes 11, 12, it is possible for the space between the container 3 and the half-shells 5, 6 to be filled by a self-reactive foam 28, which further improves the thermal insulation of the container 3. By applying the closure device 13 to the pipes 11, 12, the foam 28 cannot escape from the space between the pipes 11, 12 and the half-shells 5, 6, which means that no 6 AT 000 403 ul

Post-processing on the hot water tank 1 must be done by renting the foam 28.

In order to effect a complete sealing of the opening 23, the closure device 13 has a half-shell-shaped flange 29 with an outer circumference 30 and a core part 31, which is preferably cylindrical or tubular. Since the outer circumference 30 of the half-shell-shaped flange 29 is larger than the diameter 26 of the opening 23, the opening 23 can be completely covered by the closure device 13. By forming the closure device 13 with the core part 31, which consists of a soft foam compared to the half-shell-shaped flange 29, the foam 28 can be sucked up by the core part 31 when the space between the container 3 and the insulating hood 4 is foamed. By sucking up the foam 28, the flow rate of the foam 28 slows down, as a result of which the foam 28 begins to react immediately and thus the closure device 13 is fastened in the opening 23 of the half-shells 5, 6 and thus the closure device 13 does not react when the remaining foam 28 reacts can be pressed out of the opening 23.

3 and 4, the closure device 13 according to the invention is shown in its basic form, from which the closure device 13 according to the invention is produced with the shape shown in FIG. 2.

The closure device 13 consists of a grand body 32, with a height 33, of the core part 31, as described in FIG. 2. Furthermore, the grand body 32 has the outer circumference 30. The material of the grand body 32 consists of soft, preferably flame-retardant plastic soft foam 34.

In order to be able to produce the shape as described in FIG. 2, the grand body 32 is processed with a cutting device 35. The cutting device 35 has an outer knife 36 with a diameter 37 and a height 38. Furthermore, the cutting device 35 has a further knife 39 with a diameter 40 and a height 41. The cutting device 35 is pressed according to an arrow 42 onto the grand body 32. Due to the different heights 38 and 41 of the individual knives 36 and 39, the base body 32 of the closure device 13 is processed differently by pressing the cutting device 35 onto a stop 43.

The knife 39 completely penetrates the base body 32 with the height 33, as a result of which a hole 44 with an inner diameter 45 is cut out of the main body 32. The 7 AT 000 403 Ul further knife 36 has a lower height 38 than the height 33 of the base body 32, whereby an incision 46 with an outer diameter 47, which corresponds to the diameter of the core part 31, and a depth 48, which is the penetration depth of the Cutting device 35 corresponds, arises

The core part 31, as described in FIG. 2, was produced by this machining method.

5 shows the manufacturing process for the half-shell-shaped flange 29 of the closure device 13. 3 and 4, the incision 46 in a pressing device 49, which consists of two parts 50, 51 and is guided over guides 52, is clamped .

The centering of the base body 32 takes place via an extension 53, which is mounted on the part 51, in which the base body 32 with the hole 44 is plugged onto this extension 53. The part 50 of the pressing device 49 is then moved in the direction of the part 51 according to arrow 54, as a result of which the base body 32 is deformed in accordance with a shape 55, 56 of the parts 50, 51. This is only possible in that in the preprocessing according to FIGS. 3 and 4 of the base body 32, the incision 46 was made in the base body 32, as a result of which the material outside the incision 46, that is to say from the core part 31 to the edge of the base body 32, the protruding material into an appropriate shape, to an extent corresponding to the depth 48 of the incision 46.

After the part 50 is pressed onto the part 51 in accordance with the arrow 54, the edge region of the closure device 13 is heated via heating spirals 57, as a result of which a thermal deformation of the edge and thus a compression of the plastic soft foam 34 and permanent retention of the shape is achieved. After the pressing process has ended, the closure device 13 can be removed from the pressing device 49 and used to cover the openings 23.

It is advantageous in this production that the core part 31 is not changed in its great property of the material with a density between 10 kg / m3 and 20 kg / m3, preferably 16 kg / m3, so that it can easily be slipped over the pipeline 11 or 12 can be done. In the manufacture of the half-shell-shaped flange 29, the density is compressed from 16 kg / m3 to up to 1000 kg / m3, and thus a ratio of the density between the core part 31 and the flange 29 of 1 to 100, preferably 1 to 60, is obtained AT 000 403 Ul aims. Furthermore, it is advantageous if the inner diameter 45 of the hole 44 has a smaller diameter than the diameter 27 of the pipeline 11 or 12, as a result of which a certain holding force is built up when the closure device 13 is pushed onto the pipeline 11 or 12, which makes it possible to position the closure device 13 on the pipeline 11, 12 in such a way that the circumferential spherical cap-shaped or convexly curved or hat-shaped flange 29 can also lie flush on curved surfaces of the insulating hood 4 and can also be held in this prestressed position. In this way, even with curved outer surfaces of insulating hoods 4 of this type, tight contact of the annular flange 29 can be ensured and air passage can be prevented.

The holding force, which is built up by the pretensioning effect of the plastic foam expanded over its manufacturing diameter 34 of the core part 31, ensures, on the other hand, that when a liquid foam material penetrates between the insulating hood 4 and the container 3, the closure device 13 in remains in its original position and provides sufficient resistance to the forces acting on it during the penetration of the liquid foam material and its reaction

It is of course possible, as shown in FIG. 2, that the core part 31 of the closure device 13 has the same diameter as the opening 23. In this embodiment variant, it is advantageous that, as described above, the closure device 13 or the core part 31 consists of a soft material, preferably plastic soft foam 34, so that the plastic soft foam 34 is initially decentralized to the opening 23 when it is attached in the opening 23 is positioned by squeezing the core part 31. If there is a remaining air gap between the opening 23 and the core part 31, the arrangement of the half-shell-shaped flange 29 seals the opening.

Of course, it is also possible that the core part 31 has a larger diameter than the opening 23, so that even when the pipeline 11, 12 is positioned eccentrically to the opening 23, the opening is sealed with the core part 31 by the plastic soft foam 34 of the core part 31 is compressed to different degrees.

In order to ensure a sealing closure of the flange 29 even with curved outer surfaces of the insulating hood 4, it is advantageous if this flange 29 is spatially curved, for example hood-like or as part of a hollow spherical jacket. Due to the high compression of the material, this has a correspondingly strong pretension 9 AT 000 403 Ul in the direction of the core part 31 or the insulating hood 4, whereby the flange 29 tends to return to the starting position when the position has changed compared to its original shape go and thereby a permanent contact of the flange 29 on the surface of the insulating hood 4 is ensured. A flange height 58 of the flange 29 can be designed differently so that it can be easily adapted, for example, to different curvatures of the insulating hood 4. If the flange height 58 is greater, the insulating hood 4 can have a greater curvature, or the closure device 13 can be used for more curved components or insulating hoods 4.

In this context, it is also advantageous if the flange 29 has a thickness 59 or 60 from the core part 31 in the direction of its outer periphery, the thickness 60 being less than the thickness 59 in the region further away from the core part 31, so that the peripheral end region 61 acts due to the smaller thickness in the manner of a sealing lip, while the thickness 59 in the direction of the core part 31 ensures a corresponding stable position of this sealing lip in a prestressed position.

Individual features of the individual exemplary embodiments can also form the subject of independent inventions together with individual features of further exemplary embodiments or individually.

It can also form the subject of independent solutions according to the invention, individual ones of the designs shown in FIGS. 1, 2 and 3 to 5. The tasks and solutions according to the invention in this regard can be found in the detailed descriptions of these figures.

Finally, for the sake of order, it should be pointed out that individual components and assemblies are shown disproportionately and to scale in the drawings for a better understanding of the invention. 10th

Claims (14)

AT 000 403 Ul claims 1. Closure device for openings, in particular in an insulating hood for a container for the passage of pipelines, characterized in that the closure device (13) consists of a preferably open-line and / or flame-retardant plastic soft foam (34) and a core part (31) is cylindrical or tubular, which is provided in an end region with an annular flange (29) molded onto it, and that the annular flange (29) has a multiple of the density of the core part (31). 2. Closure device according to claim 1 dadruch characterized in that a base body (32) or the core part (31) has a density of 10 kg / m3 to 20 kg / m3, preferably 16 kg / m3. 3. Closure device according spoke 1 or 2, characterized in that the flange (29) with a density, preferably of 16 kg / m3, to a multiple of the density, preferably up to 1000 kg / m3, compressed plastic soft foam (34) . 4. Closure device according to one or more of claims 1 to 3, characterized in that the flange (29) and the core part (31) consists of, for example, a one-piece body (32) made of uniform plastic soft foam material and the flange (29) of one the core (31) corresponding height (33) on a thickness (59, 60) is thermally deformed or thermally cracked, which is a fraction of the height (33). 5. Closure device according to one or more of claims 1 to 4, characterized in that the ratio of the weight per unit space between core part (31) and flange (29) is 1 to 100, preferably 1 to 60. 6. Closure device according to one or more of claims 1 to 5, characterized in that an outer diameter (47) of the core part (31) is larger than a diameter (26) of the opening (23). 7. Closure device according to one or more of claims 1 to 6, characterized in 11 AT 000 403 Ul characterized in that an inner diameter (45) of the tubular core part (31) is equal to or smaller than a diameter (27) of a pipeline (11, 12). 8. Closure device according to one or more of claims 1 to 7, characterized in that the flange (29) is half-shell-shaped or convexly curved in relation to the protruding extension of the core part (31) 9. Closure device according to one or more of claims 1 to 8, characterized in that the flange (29) is designed with a spherical cap or convex curve with respect to the protruding extension of the core part (31). 10. Closure device according to one or more of claims 1 to 9, characterized in that the base body (32) is provided with an incision (46) corresponding to the cross-sectional shape of the core part (31), the depth (48) of which is less than a height ( 33) of the core part (31). 11. A method for producing a closure device from a plastic foam in which a base body is made of plastic foam and is then compressed in regions under pressure and temperature to a higher density, characterized in that the base body in an the outer circumference or cross section of a core part corresponding circumferential shape is provided with an incision in an end face of the base body which extends perpendicular to a side wall and has a depth which is less than a height of the basic body, whereupon the part of the basic body surrounding this incision compresses to a thickness under pressure and temperature and is spatially deformed, which is a fraction of the height of the basic body and is held in this deformed position until the plastic foam has solidified to such an extent that it remains in the deformed spatial shape. 12. A method for producing a closure device according to claim 11, characterized in that a height of the basic body in the deformation region is equal to or less than the height of the core part. 13. A method for producing a closure device according to claim 11 or 12, characterized in that a height of the basic body in the deformation region is equal to or greater than the height of the core part. 14. A method for producing a closure device according to one or 12 AT 000 403 Ul several of claims 11 to 13, characterized in that the volume of the base body surrounding the core part is compressed to an extent corresponding to a depth of the incision. 13