DE29512409U1 - Diaphragm expansion vessel - Google Patents

Description

Günter Leining Patent Attorney and Lawyer

Authorized representative at the European Court of Auditors PA/RA Leinung, Olvenstedter Str. 30 39108 Magdeburg

Address: Olvenitedter Str. 30 39108 Magdeburg

Telephone (0391) 7339433

5614068

Fax: (0391) 5614088

Account details: Dresdner Bank Account No. 0309418200 Bank code: 81080000

Applicant:

Flamco Stag
Container Construction GmbH
Berliner Chaussee 29
39307 Cjenthin

Diaphragm pressure expansion vessel

The invention relates to a membrane pressure vessel for drinking water supply and heating systems and can
can also be used in pressure boosting systems. These consist primarily of cylindrical containers with protruding water supply and water discharge pipes and a membrane provided in the container,

Patent specification 24 23 747 discloses a membrane expansion vessel for hot water heating systems, which has a water supply pipe almost in the middle of its cylindrical pressure vessel, which is provided with corresponding holes or slots through which the introduced water enters the interior of the membrane. At the bottom of the pressure vessel there is a corresponding water discharge pipe through which the water can be discharged from the vessel.

The DE patent specification 22 58 027 refers to a pressure vessel for systems through which liquid flows, which also works according to the principle mentioned, whereby two parallel pipes are provided in the center of the pressure vessel, which also have corresponding openings for the water inlet and outlet. In this solution, it is further proposed that special outlet openings are provided in the base of the cylindrical vessel, which are intended to ensure safe exit from the vessel.

This solution does not achieve the greatest possible flow through the vessel. In particular, the largely layered drainage of the water with the collection of the old water in the bays created by the different folding of the membrane is not achieved.

The invention is based on the task of developing a diaphragm pressure expansion vessel which is equipped with a corresponding

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is equipped with a corresponding device that ensures a high flow of water or other liquid inside the membrane, regardless of the degree of filling of the membrane.

According to the invention, the object is achieved by the features characterized in claim 1.

Special designs and advantageous solutions are .·**·.

Subject of subclaims. .'**;

The newly created solution relates to a specially designed water inlet pipe, which is located in the middle of the pressure expansion vessel and which, thanks to its special design, largely achieves a layered drainage of the old water in conjunction with turbulence. The water inlet pipe has openings on its circumference which are designed as longitudinal slots and have a cross-sectional shape which widens towards the top.

These openings are arranged in such a way that good flow is achieved and a high exchange of water or other liquids contained therein also takes place in membrane bulges.

The outlet openings provided along the water inlet pipe take the prevailing pressure conditions into account by expanding their cross-sectional shape towards the top, thus allowing a larger amount of discharge to exit the water inlet pipe in this area.

These longitudinal openings of the water inlet pipe are overlapped by cover strips on the pipe, which adapt to the external shape of the water inlet pipe and are connected to the water inlet pipe on one side. On the surface that is freely adjacent to the water inlet pipe, the cover strips are provided with a profile, the elevations of which rest against the external wall of the water inlet pipe and the depressions form outlet openings through which the introduced water can reach the interior of the membrane.

The cover strips are arranged in such a way that sufficient flow is achieved within the membrane interior. .···*. *...·

A special embodiment of the invention consists in that this water inlet pipe is not only designed as a cylindrical pipe, but this water inlet pipe can also be made from similar profiles, but can preferably also consist of two paired half-shells, whereby the elongated openings then present between the two paired half-shells serve as water outlet openings.

With this solution, these outlet openings are also provided with appropriate cover strips in order to achieve a good flow effect with this design and to protect the membranes from damage.

It is also part of the invention that the water inlet pipe also consists of individual parts that can be paired with each other, which proves to be particularly advantageous during assembly but especially during disassembly of the water inlet pipe.

The invention will be explained in more detail with the following embodiment.

The accompanying drawing shows

Fig. 1: a school illustration of the Meinbrnn pressure expansion vessel

Fig. 2 : a section AA according to Figure 1 Fig. 3 : a partial view according to Figure 1

Fig. 4 : an embodiment of the water inlet pipe · ·

Fig. 5 : a schematic diagram of the cover strip.

An overall view of the diaphragm pressure expansion vessel is shown in Figure 1 and illustrates the approximately central arrangement of the water inlet pipe 4 in the pressure vessel 1.

The water inlet pipe 4 is provided with a perforated cover 11 at the top and the water inlet pipe 4 is surrounded by the membrane 2 in a pressure- and watertight manner. The membrane 2 is attached above the water pipe 4 and is connected directly to the connection flange 8 below via a special membrane seal 10. This arrangement of the water inlet pipe 4 and the design and arrangement of the membrane 2 is selected so that the water inlet pipe 4 is un-

·

is indirectly surrounded by the membrane 2 and the water inlet pipe 4 projects into the membrane interior 3.

From Figure 1 it can also be seen that the water inlet pipe 4 is designed in a split form, whereby the individual pipe sections can be connected to one another via corresponding pipe connections 7. The water outlet is arranged centrally around the base of the water inlet pipe.

pipe. .···*.

Furthermore, the water inlet pipe 4 has at its : ·»,'

outer walls outlet openings 5, which serve as longitudinal .*..

slots are designed with a cross-section of *....'

bottom to top and thus have a positive effect on the *..·.'

prevailing pressure conditions influence, where- *

This ensures that the water at any pressure &iacgr;_# · ₍

ratio and degree of filling of the membrane can escape from the water inlet pipe 4 into the interior of the membrane 3.

The direct locking and fastening of the water inlet pipe 4 and the water outlet pipe 6 takes place in the bottom of the pressure vessel 1 by means of a connecting flange 8 provided there.

The outlet openings 5 of the water inlet pipe 4 are overlapped by a cover strip attached to the water inlet pipe 4, as shown in Figure 2. These cover strips 9 ensure that the membrane 2 cannot come into direct contact with the outlet openings 5 and close them off.

The water outlet from these outlet openings 5 is, however, ensured by the fact that the cover strip has so-called profiles 12 in the direction of the water outlet, which ensure that even with a low water content and the membrane 2 is placed on the water inlet pipe 4, the outlet openings 5 are not covered and water can enter the membrane interior 3.

The arrangement of the cover strips 9 on the water inlet pipe 4 is also shown in Figure 3, where the I *..*

Cover strips 9 are only shown in principle. ....

The approximately central arrangement of the water inlet pipe 4 in the pressure vessel 1 can also be seen directly from Figure 3, and it is also shown that the water outlet pipe 6 is provided at the lowest point of the pressure vessel 1 in order to ensure good water outlet from the entire system.

Figure 3 also shows the cylindrical design of the water inlet pipe 4 with the outlet openings 5 provided on the circumference and illustrates the longitudinally divided design of the water inlet pipe 4 with the corresponding pipe connections 7.

Figure 4 shows a further advantageous embodiment of the water inlet pipe 4. This water inlet pipe 4, or more correctly expressed water supply, is formed by two paired half-shells 14, which are joined together in such a way that water outlet openings are also provided between the two half-shells 14, and these are closed by means of arranged cover strips.

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sten 9 must be closed.

The cover strips 9 are designed in the manner already described above.

This design of the water supply pipe 4 is also selected in such a way that a good flow of the water present inside the membrane is ensured.

As already shown above, the cover strips 9 are connected to the water inlet pipe 4 via a fastening .13, have a shape adapted to the water inlet pipe and rest on the water inlet pipe 4 with their :"""": profilings 12.

These profiles 12 can be designed in different shapes, for example zigzag-shaped, trapezoidal or wave-shaped, whereby the outlet openings that arise between the profile 12 and the water inlet pipe 4 can also be designed directly as openings, which are then provided in the front side of the cover strip 9.

The design of the cover strips is selected in such a way that, on the one hand, the hygienic conditions of a drinking water system are met and, on the other hand, a cost-effective solution is available.

On the functional process:

Water is fed into the pressure vessel 1 via the water inlet pipe 4. The water enters the pressure vessel 1, depending on the prevailing

under the pressure conditions in the membrane interior 3 via the outlet openings 5 provided in the water inlet pipe 4 and into the membrane interior 3. The wedge-shaped outlet openings 5, i.e. the outlet openings 5 designed as longitudinal slots widen towards the top, ensure that the water exiting via these outlet openings reaches the membrane liner 3 with a movement, where it causes the old water to be drained away in layers, in conjunction with turbulence. **...*

The old water is drained off via the water drain pipe 6. &Idigr;*. J This prevents the old water from remaining in the bulges of the membrane when the pressure conditions in the pressure vessel 1 are low or when the water quantity in the membrane interior 3 is low"**·

In addition to the wedge-shaped outlet openings 5 ; ; the cover strips 9 provided ensure that the : ;

Water swirls into the interior of the membrane 3.

The device created according to the invention has the advantage that no residual water can form in membrane/pressure expansion vessels according to the invention, but rather sufficient turbulence and good drainage from the pressure vessel 1 are ensured.

The longitudinally split design of the water inlet pipe ensures and guarantees good dismantling conditions, without the entire pressure vessel 1 having to be moved from its vertical position.

Claims (4)

Expectations 1. Diaphragm pressure expansion vessel for drinking water supply and heating systems as well as for pressure boosting systems, consisting of a preferably cylindrical pressure vessel to which a water inlet pipe is assigned to the longitudinal axis of the pressure vessel, which is enclosed by a ;****&iacgr; membrane, the water inlet pipe being provided with ;. ·. water outlet openings, _{characterized} in that ·****: - the water inlet pipe (4) is split lengthwise and can be assembled or disassembled via pipe connections ( ₇ ) and longitudinal outlet openings (5) are provided on its outer circumference, *·. _' ! - the outlet openings (5) have a wedge-shaped cross-sectional shape that widens upwards, thus realizing a water outlet at the highest point that is not enclosed by the membrane (2), whereby - the water inlet pipe (4) and the outlet openings (5) are assigned to overlapping cover strips (9). 2. Diaphragm pressure expansion vessel according to claim 1, characterized in that the cover strips (9) are connected to the water inlet pipe (4) via fastening elements (13) on the one hand and on the other hand are arranged freely on the circumference of the water inlet pipe (4). 3. Diaphragm pressure expansion vessel according to claims 1 and 2, characterized in that the cover strips (9) are equipped with profiles (12) at the free end, which are designed in various cross-sectional shapes, preferably zigzag-shaped, trapezoidal, wave-shaped, or with perforations. 4. Diaphragm pressure expansion vessel according to claim 1, characterized in that that the water inlet pipe (4) is designed as a feed device with different cross-sectional shapes in a modification of the cylindrical pipe shape, whereby the water inlet pipe is preferably formed from two paired half-shells (4) which have outlet openings (5) on their facing sides, whereby a cover strip (9) is assigned to each of the half-shells (14). .***· Diaphragm pressure expansion vessel according to claims .··", 1 to 4, characterized in that H". the covering strips (9) are made of a corrosion _{- resistant} material that complies with the hygienic regulations, preferably a plastic. *..* 3