DE8203569U1 - EXPANSIVE VESSEL - Google Patents

Description

EXPANSION VESSEL

description

The invention relates to an expansion vessel for absorbing changes in volume, fluctuations in temperature exposed liquid that is part of a device for storing this liquid, the can be dispensed in portions via a line, this vessel with a solid housing and with an expandable member which forms the separation between the liquid and a gas under pressure is. An expansion vessel of this type, which is used in a closed system for hot water supply is in various trainings

known.

The housing is provided with a single opening, through which the liquid can flow in and out, while the contents of the vessel by means of a membrane-shaped member into two separate parts is separated. The pressure occurring in both parts of the housing is almost the same, although the shape of the Mambran is mainly determined by the pressure on both sides. The use of such a Expansion vessel for a boiler or hot water

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The purpose of the water storage tank is to use an overflow valve and / or the leakage water that occurs in the process possibly to make superfluous.

Under certain circumstances, an expansion vessel This kind of disadvantage arises that the water standing still in this vessel leads to the occurrence of bacteria leads. The latter is particularly undesirable in a hot water apparatus in connection with the hygienic Consequences *

The aim of the invention is to create an expansion vessel which has a certain degree of flow through, in order to prevent the formation of harmful bacteria. According to the invention this purpose is achieved by the expandable member is sack-shaped and connected together with the housing in series with the delivery line is, so that two connections are provided: between the line on the one hand and the housing or the Sack on the other hand.

As a result of this measure, there is always a certain low flow rate while a quantity of liquid is being drawn off of the vessel, thus effectively avoiding the above-mentioned disadvantage of the prior art. An apparatus that has an expansion vessel designed in this way can at any time have one for the Dispense suitable liquid for consumption. According to one embodiment of the invention, the housing mainly cylindrical with two curved head surfaces, each with a central connection nipple are provided for the relevant parts of the delivery line, these nipples being connected to the expandable bag are and wherein between the two nipples with some leeway a piece of pipe connects, of which the head surface in at a distance from the sack and the pipe section in the expandable sack forms a continuation of the delivery line. During the draw-off, the liquid flows through the

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Pipe piece, while part of the liquid supplied to the housing in the bag because of the intended distance comes in as a replacement for the liquid coming out of the vessel and dragged along to the tapping point. To this The necessary small refreshment of the liquid in the housing is carried out periodically.

The above and other characteristics of the invention are explained in more detail with reference to the accompanying drawings, wherein two designs of the expansion vessel according to the invention are shown in which

Fig. 1 is a longitudinal section of a first embodiment of the expansion vessel according to the invention, wherein the lower half is shown as a side view;

Fig. 2 is a first variant of a detail from Fig. 1, the left half showing the Monday phase and the right side shows the final phase;

Fig. 3 is a longitudinal section through the second embodiment of the expansion vessel according to the invention.

As can be seen from Fig. 1, the vessel consists of a solid housing 1 and an expandable member 2, which the Separation between the liquid and a gas under pressure forms. The member 2 is sack-shaped and is intended to absorb liquid while the gas is in the space between the bag 2 and the housing 1 is located. The expansion vessel is connected in series with a delivery line 3 »which is part of a (not shown) memory and via line 3 in portions a liquid which is exposed to fluctuations in temperature, such as water from a boiler, releases.

For this series connection, the expansion vessel with two connections (flanges) 4 is between the line 3 on the one hand and the housing 1 or the bag 2 on the other hand

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ί provided. The housing 1, which is preferably cylindrical ; is, has on each of its curved head surfaces 5 one

' ¹ I central connection nipple 6, which is placed on the housing wall

';' is consolidated. On the part protruding from the housing

',. of the nipple 6, the line 3 is connected, while g on the part of the nipple 6 protruding into the housing 1

if * - an opening edge 7 of the expandable sack 3 connected || is. Between these two nipples 6 closes with some

I according to clearance a pipe section 8, which is within the

') i sack 2 forms a continuation of the delivery line 3. ! ■■ A small expansion gap is provided between the top surface of the pipe section 8 and the wall Ίΐ'- of the bag 3.

The nipple 6 is surrounded by a tubular member 9

with a flow element 10 loosely arranged in this limb;

Pipe section 8 is pushed. The element 10 is in the transverse ^ hat-shaped cut. The link 9 has some, e.g. three,

I radially directed cams 11, which open the end of the

l "; pushed pipe section 8 at a distance from link 9

keep. This creates a certain connection 12 'between the delivery line 3 on the one hand and the interior

% of the bag 2 on the other hand, so that during the transit

"i flow the liquid through line 3 and that

X pipe section 8 a certain exchange of the liquid on-

; i occurs. This will periodically result in a small refresh

I schung the water in the bag 2 take place,

% while, moreover, bacterial growth in this way

5 | this sack is avoided.

The butt-shaped element 10 is used to stimulate the Flow through the expansion vessel, i.e. the space between the bag 2 and the pipe section 8 Element 10 has a hole 13f with its diameter in such a way the dimension of the connection 12 is coordinated, that the desired refreshment of the in the vessel Liquid is achieved. Element 10 works

as a resistance element for the liquid flowing through the line 3. The edge 14 of the top surface 5 is annularly rounded, complementary to the outside of the link 9. This allows the opening edge 7 of the Bag 2 are firmly clamped.

The formation of the expansion vessel according to FIG. 1 shows that the opening edges 7 of the bag 2 directly on the Wall of the housing 1 are attached. The member 9 of the connection nipple 6 is designed as a cover flange 15, which has a number of bolts 16 and one on the head surface 5 welded fastening ring 17 is firmly clamped on the wall of the housing 1. The opening edge 7 of the Sack 2 is clamped by means of these members 16 and 17. The cover flange 15 can be made of brass or made of epoxy-clad steel, on the inside of the link 9 also an epoxy cladding can be applied.

The embodiment according to FIG. 2 shows the assembly phase on the left half, with the cover flange 15 free rests on the head surface 5. In the right half, the flange 15 is fastened by means of countersunk bolts 18. This variant as well as FIG. 3 shows that the connection 12 from FIG. 1 as one or more openings is provided in 8 «.

The embodiment according to FIG. 3 has instead of the ring 17 a welded-on sleeve 20 which is used for fastening the Flange 15 is clawed. The resistance organ for the flow through the pipe section 8 is here by a elastic plug 21 with hole 13 is formed.

As can be seen from Fig. 1, the housing 1 is also provided with a spring-loaded flap (22) for closing or discharge of pressurized gas from the space between the housing 1 and the bag 2.

Claims (5)

foner 'ebbingkaus finck PATENTANWÄLTE EUROPEAN PATENT ATTORNEYS MARIAHILFPLATZ 2 & 3, MÖNCHEN 9O POST ADDRESS: POSTFACH 95Ο16Ο, D-8OOO MÖNCHEN 95 G 82 03 569.5 Flamco B.V. Our file: DEG-22552 June 23, 1982 Fi / Rf protection claims 1. Expansion vessel to absorb fluctuations in volume liquid exposed to temperature fluctuations, as part of an apparatus for storing the liquid, which can be dispensed in portions via a line, the vessel having a solid housing and an expandable one Member that forms the separation between the liquid and a gas under pressure is provided thereby characterized in that the expandable member is attached one to two on separate connections (4) of the housing (1) Openings provided sack (2) and that between the delivery line (3), which extends as a pipe section (8) through the Sack (2) extends, and the interior of the sack (2) at least one overflow channel (12, 9) is formed. 2. Expansion vessel according to claim 1, characterized in that the housing vorzugswiese or almost is cylindrical, with two curved head surfaces (5), each * with a central connection nipple (6) for the relevant Parts of the delivery line (3) are provided, and that a pipe section (8) with some between the two nipples Space adjoins, of which the head surface is at a distance from the sack, with the pipe section within the stretchable Sack forms a continuation of the delivery line. 3. Expansion vessel according to claim 2, characterized in that g e k e η η - -2- show that each nipple (6) has a tubular shape extending towards the interior of the housing (1) Member (9) is formed and that an opening edge (7) of the expandable sack (2) is attached to this inner end, the pipe section (8) being provided with a few openings (19) located in the vicinity of both ends. 4. Expansion vessel according to the preceding claims, characterized ze ichnet that in one end ^ .reich of the pipe section (8) a flow resistance (10, 13) is arranged. 5. Expansion vessel according to claim 3 or 4, characterized in that the nipple (6) as one with a fastening ring (17) cooperating flange (15) is formed, wherein the opening edge (7) of the expandable sack (2) is clamped between a head surface (5) and the flange.