DE8118513U1 - PIPE VENTILATOR - Google Patents

Description

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Eggemann 7675 / Θ1

- 6 pipe aerators

The invention relates to a pipe aerator, consisting of a housing with a water inlet, a water outlet, at least one ventilation channel penetrating the housing wall and one adjustable in the housing- » th, the ventilation channel on the one hand closable and on the other hand releasable in the case of negative pressure in the drain inlet Outer valve body.

Such tube aerators are widely known. They serve as safety fittings in drinking water systems and are found, among other things, at ulaseer outlets ending in brewing pipes Use in case of negative pressure in the water supply line to prevent dirty water from being sucked back in, namely in the event that the overhaul in the for example liiaeser in a bathtub reaches in.

The known tube aerators, however, have a large number of housing bores, which often change in their directions, from which a relatively complicated and expensive production results.

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With the invention is now described above for a tube aerator Genus while maintaining at least the same level of functional reliability as previously one Considerable simplification and cheaper is sought.

The solution to this problem is characterized in that the closure body is axially limited as in the housing adjustable, double-sided effective piston is formed in which a rectified to its adjustment direction Opening is provided, the clear cross section of which is several times smaller than the cross section of the piston iet that, furthermore, the one urging space with the pale inlet, the other displacement room with the pale drainage are connected and that the piston closes the confluence of the ventilation duct at bottom dead center, In the top dead center, however, the ventilation duct confluence is arranged releasing.

As a result of these measures, all water-bearing spaces in the housing can now be arranged in the same direction as one another from which the desired production simplification results.

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In order to ensure functional reliability even with low flow rates. To ensure unity, it is advantageous if the cylinder displacement spaces have a larger cross section as the confluences of the water inlet and the water outlet and that the piston in his Dead points at a distance from the confluences of the Wasssrzu = and expiration a is arranged.

Furthermore, an advantageous design of the above-mentioned object is characterized in that the Piston has a substantially cup-shaped shape and is arranged with the bottom facing the water drain.

This results in a function, among other things, for the piston the pipe aerator, which is favorable to the relatively low dead weight and long, tilt-proof piston guides.

In addition, it is advantageous if the piston is made from a material of low weight, in particular from polytetrafluoroethylene consists.

On the one hand, this leads to a further reduction in the weight of the piston, on the other hand

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prefabricated calf ring seals are dispensable.

Further the manufacture of the article described above Simplifying features can be found in claims G to 9.

For a quick reaction of the described Rahr aerator it is advantageous to ωεηπ the cross-section of the calving around 15 times larger than the clear cross-section the opening arranged in the piston head is formed.

A preferred embodiment of the above which is both favorable in terms of production engineering and easy to assemble The object is characterized in claims 11 to 13.

An exemplary embodiment of the invention is shown in the drawing and is described in more detail below. Show it:

Fig. 1 shows a pipe aerator in longitudinal section and accessories with opened ventilation ducts,

Fig. 2 also in section II-II,

Fig. 3 is the same as shown in Fig. 1, but with sealed ventilation channels.

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In this tube aerator, the housing 1 is detachably assembled from tubular parts 2 and 3 screwed together tightly. A water drain is molded onto the housing part 2, while the housing part 3 has a water drain 5 molded onto it. For the screw connection of the two GehMuseteile to each other, an outer groove zone 6 is arranged on the housing part 2, which is screwed tightly into a corresponding screw hole 7 of the GehMuseteiles 3. The parts 2 + 3 are arranged coaxially aligned with one another and the parts b and 5 are also directed coaxially to the parts 2 and 3. In the housing part 2 a cylindrical, axially directed bore is provided in which both the Ulasser inlet 5 and the water outlet i * open directly.

The confluences of parts k + 5 each have smaller clear cross-sections than the housing bore.

In the housing bore of the GehMuseteiles 2 is a cup-shaped, Piston B, which can be acted upon on both sides, is axially adjustable to a limited extent. In the piston head 9 is centrally arranged an Iilasser passage opening 10, the

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clear cross-section around 15 times smaller than the piston cross-section 1st.

At the end of the bottom 9, made of polytetra. fluorethylene existing piston θ Is a flange 11 formed, which in a Bohrungserueiterung 12 of the housing « part 2 is axially adjustable and limits the adjustment stroke of the piston β.

The outer shell side of the piston B lies in the bore of the housing part 2 directly tightly.

In addition, in the housing part 2 there are ziiiei diametrically directed ventilation channels 13 which penetrate its wall and which are arranged so that they are connected to the water outlet k when the piston 8 is at top dead center (FIG. 1). On the other hand, the ventilation ducts 13 are closed by the piston 8, at the latest when the piston 8 assumes its bottom dead center position (FIG. 3).

On the housing part 3 there is another one that runs coaxially with the latter Shaped collar 1t, which shields the ventilation ducts 13.

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Ullrd now the pipe aerator through the water inlet 5 with When water pressure is applied, a dynamic pressure is formed in the displacement chamber 15 connected to the water inlet 5 which causes the piston 8 to be displaced from the position shown in FIG. 3 into the position shown in FIG . In doing so, the piston 8 rests tightly against the junctions of the ventilation ducts 13.

If, however, a negative pressure forms in the water supply line, the piston 8 is moved from the position shown in FIG. 3 towards its top dead center position at the latest by the water sucked in through the water outlet it. If the piston β passes the junctions of the ventilation ducts 13, the displacement space 16 connected to the water outlet k is ventilated, which means that the sucked in water flows out through the water outlet U.

All new individual and combination features disclosed in the description and / or drawing are used regarded as inventive.

Claims (1)

1. Pipe aerator, ventilating from a housing with a Uaaser inlet, a water outlet, at least one of the GehHuseuiand penetrating ventilation duct and aua one adjustable in the housing, the ventilation channel on the one hand closable on the other hand when under " pressure in the water inlet releasable valve, thereby marked that the contact body as in Housing axially adjustable to a limited extent, double-sided effective Holben (8) is formed, in which one to the Uerstellrichtung rectified opening (1G) provided is, whose clear cross-section is several times smaller than the cross-section of the piston (6), that also the a displacement space (15) with the Lüaaser inlet (5), the other Uerdrängerraum (16) connected to the water drain (it) and that the piston (8) is at bottom dead center Eggemann * trrmr * - ^ * • · ι · β i «f ·« · Il It · t · · · closing the confluence of the ventilation duct (13), In the top dead center, however, the ventilation duct entry point arranged to be released iat. 2. Tube aerator according to claim 1, characterized in that that the cylinder VerdrHngerrSume (15,16) each have one larger cross-section ala the mouths of the water inlet a (5) and the overflow drain (4) and that the piston (Θ) in the legs dead center at a distance from the junctions of the water inlet and outlet (5, O is arranged. 3. Tube aerator according to Anaprüchen 1 + 2, characterized in that the piston (8) has a substantially cup-shaped shape and is arranged with the bottom (9) facing the water drain Ck). k. Tube aerator according to one or more of the preceding claims, characterized in that the calve (8) consists of a material of low density. Eggemann 7675/81 * - 3 - 5. Tube aerator according to one or more of the preceding claims, characterized by one of Polytetrafluoroethylene existing piston (8). 6. Tube aerator according to one or more of the preceding claims, characterized in that the opening (10) is arranged in the piston (8) running coaxially with respect to that. 7. Tube aerator according to one or more of the preceding claims, characterized in that the calving (8) at the end remote from the base (10) an in an extension (12) of the housing (1) has axially adjustable flange (11) to a limited extent. 8. Tube aerator according to claim 7, characterized in that the flange (11) is integrally formed on the piston (8). 9. Tube aerator according to one or more of the preceding claims, characterized in that the bJaaser inlet (5) and the water outlet (4) running coaxially to the adjustment direction of the piston (8) are arranged. • · · ·· ■> ■ « Eggemann 10. Tube aerator according to one or more of the previously · « going claims, characterized in that the cross section of the piston (8) is approximately 15 times larger than the clear cross section of the opening (1D) arranged in the piston head (9) is formed. 11. Tube aerator according to one or more of the preceding claims, characterized by a from Housing assembled into tubular parts (2, 3) (1), of which the first housing part (2) the molded water drain (4) souiie at least has a ventilation duct, the idasser inlet (5) is formed on the second housing part (3) and also in the first part (2) of the piston (Θ) is used axially adjustable. 12. Tube aerator according to one or more of the preceding claims, characterized in that the Housing parts (2,3) designed to be screwed together are, in particular, such that the first housing part (2) is connected to the water drain (O is sent away End part has an external thread zone (6) ► II · ■ t »··· ■ I ι ι ■ Eggemann 7675701 and with this in a corresponding Geuindebore (7) of the second walking mask part (3) tightly is screwed in. 13. Tube aerator according to one or more of the preceding claims, characterized in that on second GehMuseteil (3) a circumferential with distance to the first housing part (2) arranged, the bzui. the ventilation channels provided in the first housing part (2) (13) shielding collar (HO is molded. DIPL-ING. CONRAD KOCHWNO PATRNTAN W ALT