DE20120745U1 - Condensate water drain - Google Patents

Description

(18 702)

Condensate drain

The innovation concerns a condensate water drain for condensing boilers, consisting of a gas- and liquid-tight container with condensate inlet and condensate drain.

Such a condensate water drain is known, for example, from DE 93 07 833.1 Ul, which consists of a housing connected to the boiler exhaust flues with an exhaust connection piece and a condensate water drain piece. In addition to this design, a floating and opening closure body is arranged in a holder in front of the condensate water drain opening of the drain piece with limited movement, whereby in a special embodiment it is provided that this condensate water drain is designed in the form of a siphon. Such a siphon, which serves the same purpose, namely to ensure a gas-side seal in the area of the required condensate drain of a condensing boiler, is shown in Fig. 6, since no written evidence can be provided for this siphon, which does not require an opening closure body. With such condensate water drains acting as a siphon, it is not possible to retain unburned heating oil droplets that may accrue with the condensate if the burner malfunctions, nor precipitated fuel residues that may be carried along by the draining condensate, i.e., such condensate components would, if condensate neutralization devices are installed downstream, pollute such devices or directly the environment if the condensate is discharged into the sewage system.

The innovation is based on the task of improving a condensate water drain of the type mentioned at the beginning in such a way that not only, as was already the case up to now, a gas-side seal is ensured, but also that pollutants contained in the condensate are retained with a simple design of such a drain and are accessible for easy disposal.

This task is solved with a condensate water drain of the type mentioned at the beginning according to the innovation in that the interior of the container is divided by a separating element into a settling space and a drainage space, that the condensate inlet opens out in the settling space, that the mouth of the condensate drain in the drainage space is arranged lower than the mouth of the condensate inlet and that the condensate drain is led out of the container at the side between the arrangement level of the mouth of the condensate inlet and the closure lid of the container.

Advantageous further developments to be explained in more detail are set out in the subclaims.

This new and extremely simple design ensures that, on the one hand, solids carried along by the incoming condensate can settle in the settling chamber and collect in the floor area, and, on the other hand, that traces of unburned, liquid fuel, also carried along by the condensate, form a thin film of oil on the condensate collected in the condensate drain, but this film cannot reach the condensate drain. The prerequisite for this is the above-mentioned requirement that the inlet of the condensate drain in the drain chamber is located lower than the outlet of the condensate inlet and that the condensate drain, i.e.

whose lowest boundary or surface line of the pipe forming the drain is led out of the container at the side between the arrangement level of the outlet of the condensate inlet directed into the settling space and the closure cover of the container.

This new type of condensate drain is a special type of siphon, which on the one hand ensures a gas-tight seal, but on the other hand, by dividing it into a settling chamber and a drain chamber, it also allows for the separation of parts that must not enter a downstream neutralization device or directly into the sewer system. It should be noted that the proportion of components to be separated from the permanently flowing condensate is relatively small in relation to the total amount of condensate, so that the new type of device or condensate drain only needs to be cleaned at relatively long intervals.

The new condensate water drain is explained in more detail below using drawings of exemplary embodiments.

It shows schematically

Fig.l a section through the condensate drain;

Fig.2 shows a corresponding section of a particular embodiment;

Fig.3 an embodiment of the condensate outlet
from the container;

Fig.4,5 Embodiments of a so-called sorption part
and

Fig.6 in section for comparison a previously already for a
Condensate drain siphon serving as gas seal.

The condensate water drain for condensing boilers still consists of a gas- and liquid-tight container 1 with a condensate inlet 2 and a condensate drain 3, but it is now essential that the interior of the container 1 is divided into a settling chamber 5 and a drain chamber 6 by a separating element 4. The condensate inlet 2 opens out into the settling chamber 5 with reference to Figs. 1 and 2, and the inlet 7 of the condensate drain 3 is arranged lower in the drain chamber 6 than the outlet 8 of the condensate inlet 2, with the condensate drain 3 being led out of the container 1 at the side between the arrangement level of the outlet 8 of the condensate inlet 2 and the closure cover 9 of the container 1.

The condensate inlet 2 is advantageously arranged on the closure cover 9 which is tightly but detachably attached to the container 1, i.e. when the cover 9 is removed for cleaning purposes, the pipe or tube forming the condensate inlet 2 is also removed, which can be designed, for example, in the form of a hose nozzle which is connected to the condensate drain nozzle on the condensing boiler or on the condensing heating device by means of a hose S made of a suitable material.

The aforementioned separating element 4 can be designed in the form of a partition wall 4■ and/or a sorbent 4", such as activated carbon, defining the drainage space 6.

This alternative training considered with "and/or" has the following reason:

The above-described dual function of the condensate drain, namely settling and separating solid particles and floating of a thin fuel film F, can in itself be achieved simply by means of a suitably high partition wall 4' in the container 1.

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In order to ensure that fuel droplets which have entered the discharge chamber 6 for whatever reason cannot reach the condensate outlet 3, it is advantageous to use a so-called sorbent 4", namely a sorbent which is able to bind liquid fuels, which is achieved, for example, by activated carbon.

If the sorbent 4" is to be arranged in the form of a particle bed in the drainage chamber 6, this is of course only possible in conjunction with a partition wall 4' in order to be able to represent a defined drainage chamber 6.

However, it is also possible to design the sorbent 4" as a permeable, porous molded body 10 (see Fig.4, 5) and to connect this firmly or detachably to the inflow-side end area of the condensate outlet 3. In the embodiment according to Fig.4, such a molded body is provided with a recess 11 adapted to the tube of the condensate outlet 3, into which the end of the outlet pipe can be inserted in a tight but detachable manner.

In contrast, the embodiment according to Fig. 5 is a molded body 10 that is pressed directly into the end region of the condensate outlet 3.

Apart from the fact that a suitably dimensioned shaped body can of course also be inserted into a drainage space 6 defined by a partition wall 4' in the container 1, a shape-stable shaped body made of a sorbent can also be arranged in the container 1 without a partition wall, which then itself defines the drainage space 6.

If the molded body 10 is fixed or plugged in at the end of the condensate outlet 3, it is sealed and

removably arranged in a wall opening 12 of the container 1, as shown for example in Fig.3. This wall opening 12 is, for example, a seal made of suitable material that can be pushed tightly and tightly into a corresponding wall recess 14 of the container 1.

Another possible and preferred embodiment in this regard, with reference to Fig. 1, is that when the molded body 10 is also fixed or plugged into the end region of the condensate drain 3, its part 3' located in the container is detachably connected in a liquid-tight manner to a drain connection 13 arranged on the outside of the container 1. After such a connection has been released, the part 3' with the molded body 10 or sorption part 4" located on it can be easily removed for cleaning purposes, cleaned or exchanged for an appropriate replacement.

It should also be noted that this condensate water drain does not necessarily have to be box-shaped and have spaces 5, 6 arranged next to one another, as shown, ie the container 1 can also have a circular cross-section, which also applies to the molded body 10 and, if present, also to the partition wall 4 ^1. The condensate inlet 2 would then open eccentrically into the ring-shaped settling space 5 which surrounds the partition wall 7 or the molded body 10.

In order to give an idea of the size of such a condensate drain, it should also be pointed out that the container 1 has a volume in the order of 1-2 liters.

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Claims (8)

1. Condensate water drain for condensing boilers, consisting of a gas- and liquid-tight container ( 1 ) with condensate inlet and condensate drain ( 3 ), characterized in that the interior of the container ( 1 ) is divided by a separating element ( 4 ) into a settling chamber ( 5 ) and a drain chamber ( 6 ),
that the condensate inlet ( 2 ) opens into the settling chamber ( 5 ),
that the inlet ( 7 ) of the condensate drain ( 3 ) in the drain chamber ( 6 ) is arranged lower than the outlet ( 8 ) of the condensate inlet ( 2 ) and
that the condensate drain ( 3 ) is arranged between the arrangement level of the outlet ( 8 ) of the condensate inlet ( 2 ) and the closure cover ( 9 ) of the container ( 1 ) and is led out of the container ( 1 ) at the side. 2. Drain according to claim 1, characterized in that the condensate inlet ( 2 ) is arranged on the closure cover ( 9 ) which is tightly but detachably attached to the container ( 1 ). 3. Drain according to claim 1 or 2, characterized in that the separating element ( 4 ) is designed in the form of a partition wall ( 4 ') and/or a sorbent ( 4 "), such as activated carbon, defining the drainage space ( 6 ). 4. Drain according to one of claims 1 to 3, characterized in that the sorbent ( 4 ") is arranged in the form of a particle bed in the drainage space ( 6 ). 5. Drain according to one of claims 1 to 3, characterized in that the sorbent ( 4 ") is designed as a porous molded body ( 10 ) and this is firmly or detachably connected to the inflow-side end region of the condensate outlet ( 3 ). 6. Drain according to claim 5, characterized in that when the shaped body ( 10 ) is fixed or plugged in at the end region of the condensate outlet ( 3 ), the latter is arranged in a sealed and removable manner in a wall passage ( 22 ) of the container ( 1 ). 7. Drain according to claim 5, characterized in that when the molded body ( 10 ) is arranged fixedly or plugged into the end region of the condensate drain ( 3 ), the part ( 3 ') located in the container can be connected in a liquid-tight manner to a drain connection ( 13 ) arranged on the outside of the container ( 1 ). 8. Drain according to one of claims 1 to 7, characterized in that the container ( 1 ) is circular in horizontal section and the drainage space ( 6 ) is arranged centrally therein.