EP3361181A1 - Boiler - Google Patents

Abstract

The invention relates to a heating boiler, comprising a boiler room (1) through which flows a heating medium, a return connection (2) for supplying the heating medium to the boiler room (1) and both a supply connection (3) and an additional supply connection (4) for discharging the heating medium from the boiler room (1), whereby the return connection (2) is designed to open out into a flow guide (5) arranged in the boiler room (1) and having an opening (5.1) to the boiler room (1), wherein the flow guide (5) flows into the A feed connection (3) opens out and a device (6) is provided for setting an optional quantity of heating medium flowing through the supply connection (3) and / or via the opening (5.1) through the additional supply connection (4). According to the invention, it is provided that the flow connection (3) and the additional flow connection (4) are designed to open into a common main flow connection (7).

Description

The invention relates to a heating boiler according to the preamble of patent claim 1.

A boiler of the type mentioned is from the document DE 197 53 065 B4 known. This boiler consists of a flowed through by a heating medium boiler room, which has a return connection for supplying the heating medium to the boiler room and both a flow connection and an additional flow connection for discharging the heating medium from the boiler room, the return connection arranged in a boiler room and an opening to the boiler room formed flow guidance, wherein the flow guide in the flow connection ausmündend formed and means for adjusting a selectively flowing through the flow connection and / or via the opening through the additional flow connection flow quantity is provided to Heizkreismedium.

In addition, from the document DE 93 18 836 U1 a similar boiler known. The path that the heating medium medium has to take from the return line to the supply connection in this solution leads in places through the open boiler room.

The invention has for its object to improve a boiler of the type mentioned. In particular, an effective and cost-effective design for controlling the (total) flow temperature is to be created independently of the boiler temperature.

This object is achieved with a boiler of the type mentioned by the features listed in the characterizing part of patent claim 1.

According to the invention, it is thus provided that the flow connection and the additional flow connection are designed to open into a common main flow connection.

In other words, the boiler according to the invention thus characterized by the fact that it is possible with the help of this special flow guide construction in a simple manner, the thermocouple from the provided with a Heizkreispumpe heating circuit at the return connection, relatively cool heating medium practically unaffected by the boiler room lead to the flow connection , Since hotter, directly from the boiler room next heating circuit medium is still available on the additional flow connection, the temperature of the heating medium can be controlled at a common outlet or at a central main flow connection of the boiler, by selectively setting the ratio of the coming from the flow connection and from the additional flow connection Heizkreiemediums on the one hand, the flow connection and on the other hand the additional flow connection open, be set exactly. The stronger the flow connection is closed, the more heating medium is introduced through the above-mentioned opening in the boiler room and the hotter the heating medium will then be at the above-mentioned common outlet.

The proviso that an opening is provided on the flow guide means that at least one opening is provided. However, particularly preferred are several openings provided, on the coming from the return port, relatively cold heating medium can flow into the boiler room. Whether much or little heating medium flows from the return connection into the boiler room is, as already explained, determined by the device.

Other advantageous developments of the boiler according to the invention will become apparent from the dependent claims.

The sake of completeness is still on the more distant document DE 201 07 496 U1 pointed.

The boiler according to the invention, including its advantageous developments according to the dependent claims will be explained in more detail with reference to the drawing of a preferred embodiment.

Figur 1

den erfindungsgemäßen Heizkessel mit der Einrichtung zur Einstellung einer wahlweise durch den Vorlaufanschluss und/oder über die Öffnung durch den Zusatzvorlaufanschluss strömenden Vorlaufmenge an Heizkreismedium.

It shows schematically

FIG. 1

the boiler according to the invention with the means for adjusting a selectively flowing through the flow connection and / or via the opening through the additional flow connection flow rate of Heizkreismedium.

According to the single figure, the boiler according to the invention, which - is not shown - preferably as a biomass boiler, in particular pellet boiler, or as a condensing boiler is formed, first in a known manner from one of a Heizkreismedmedium (especially water) flowed through the boiler room 1, the one Return connection 2 for supplying the heating medium to the boiler room 1 and both a feed connection 3 and an additional flow connection 4 for discharging the Heizkreismediums from the boiler room 1, wherein the return port 2 is formed opening into a arranged in the boiler room 1 and an opening 5.1 to the boiler room 1 having flow guide 5.

In addition, it is preferably provided in a known manner that the boiler room 1, a combustion chamber 8 is formed at least partially enclosing. In the solution shown in the single figure, the combustion chamber 8 is completely enclosed by the boiler room 1, wherein the boiler room 1 has at least one outer wall 1.1 bounding a fluid-tight volume.

Furthermore, it is provided that the flow guide 5 in the flow connection 3 ausmündend formed (ie - apart from the opening 5.1 - fluid-tightly connected) and a device 6 for setting a selectively flowing through the flow connection 3 and / or via the opening 5.1 through the additional flow connection 4 Supply quantity is provided to Heizkreismedium.

As already explained, it is particularly preferably provided that the flow guide 5 not only one, but a plurality of openings 5.1 (for example in the form of round holes), so that coming from the return port 2 Heizkreismedium can flow as evenly as possible in the boiler room 1. In this case, the openings 5.1 are particularly preferably all formed on the same side of the flow guide 5.

Thus, relatively cold, coming from the return port 2 Heizkreismedium not directly from the outside against the combustion chamber 8 and its wall flows and this undesirably cools strongly, the opening is 5.1 or 5.1 in the direction of the outer wall 1.1 of the boiler room 1, at the preferably also the flow connection 3 and the additional flow connection 3 are arranged, arranged pointing.

Furthermore, it is particularly preferably provided that the flow guide 5 is tubular, this measure in relation to the solution according to the invention, for example, channel-shaped flow guides such as shafts, boundaries by separating plates or the like, so in the broadest sense, such guides that are suitable, the Heizkreismedium (apart from outflowing Heizkreismedium at or the above-mentioned openings 5.1) isolated from the heating medium in the boiler room 1 to lead.

As can further be seen from the single figure, it is further preferably provided that the flow guide 5 is optionally arranged adjacently and predominantly along an outer wall 1.1 of the boiler chamber 1 and / or between the outer wall 1.1 and the combustion chamber 8.

According to the particularly preferred embodiment shown in the single figure, it is further provided that the flow guide 5 is integrally formed between the return port 2 and the flow port 3, ie heating circuit medium 5, the flow guide 5 only through the opening 5.1 or 5.1 or via the supply port 3 leave. Essential for the boiler according to the invention is now that the flow connection 3 and the additional flow connection 4 are formed ausmündend in a common, here outside the boiler room 1 arranged main flow connection 7. In addition, it is preferably provided that the flow connection 3 and the additional flow connection 4 are arranged at the same height on the boiler room 1. Alternatively (not shown separately) can also be provided that the main flow connection 7 is formed within the boiler room 1 connected to the flow connection 3 and the additional flow connection 4, ie these two terminals 3, 4, preferably in addition, but also the means 6 for setting the respective Amount of Heizkreismedium, are then completely positioned within the boiler room 1.

According to the solution according to the invention hot Heizkreismedium is thus mixed via the additional flow connection 4 according to the setting of the device 6 at the main flow connection 7, wherein the heating medium is fed through the opening 5.1 and 5.1 openings in the boiler room 1 and heated there. The openings 5.1 are arranged at a distance from the additional flow connection 4 in order to avoid a hydraulic short circuit.

• Ausgangspunkt der nachfolgenden Erläuterung ist, dass die Einrichtung 6 bzw. das Ventil geschlossen ist, d. h. ein Abströmen von Heizkreismedium über den Vorlaufanschluss 3 zum Hauptvorlaufanschluss 7 ist vollständig unterbunden. Dies hat zur Folge, dass über den Rücklaufanschluss 2 zum Heizkessel zurückgeführtes Heizkreismedium über die Öffnungen 5.1 in den Kesselraum 1 strömen muss. Dies wiederum führt dazu, dass das in den Kesselraum 1 eingebrachte Heizkreismedium von der Wärme abgebenden Brennkammer 8 erwärmt wird. Außerdem muss aus Gründen der Kontinuität, da ja der Vorlaufanschluss 3 verschlossen ist, die Menge an Heizkreismedium, die über den Rücklaufanschluss 2 dem Kesselraum 1 zugeführt wurde, über den Zusatzvorlaufanschluss 4 abgeführt werden, was gleichzeitig bedeutet, dass das am Hauptvorlaufanschluss 7 ankommende Heizkreismedium maximal erwärmt wird.

Finally, with regard to the device 6, it is particularly preferred that it is optionally designed to be actuatable as a valve, which is preferably continuously variable with respect to its flow rate, and / or by means of a heating control. In addition, it is preferably provided that the device 6 is optionally arranged on the flow connection 3 and / or between the flow guide 5 and the main flow connection 7. The boiler according to the invention works as follows:

• The starting point of the following explanation is that the device 6 or the valve is closed, ie, an outflow of Heizkreismedium via the flow connection 3 to the main flow connection 7 is completely suppressed. This has the consequence that via the return port 2 returned to the boiler Heizkreismedium must flow through the openings 5.1 in the boiler room 1. This in turn means that the introduced into the boiler room 1 Heizkreismedium is heated by the heat-emitting combustion chamber 8. In addition, for reasons of continuity, since the supply port 3 is closed, the amount of Heizkreismedium, which was supplied via the return port 2 to the boiler room 1, be discharged through the additional flow connection 4, which means that the incoming at the main flow connection 7 Heizkreismedium maximum is heated.

If now the device 6 or the valve is fully opened, there is - if the flow resistance of the flow guide 5 between the return port 2 and the flow port 3 is sufficiently low - for the heating medium no cause or need more about the openings 5.1 in the boiler room. 1 to stream. Rather, it can flow virtually unhindered from the return port 2 via the flow guide 5 to the flow connection 3 and from there to the main flow connection 7 connected to a heating circuit with a heating circuit pump (not shown separately because it is generally known). Since the Heizkreismedium is shielded from the flow guide 5 with respect to the boiler room 1, it is, if anything, only slightly heated, ie the temperature of the Heizkreismediums at the main flow connection 7 corresponds approximately to the temperature of the heating medium at the return port. 2

From the two above-described, so to speak, extreme possibilities and the existence of the valve, finally, the particular advantage of the solution according to the invention, namely on the setting of the device 6, the temperature of the heating medium at the main flow connection 7 can influence, and that - at fully open device. 6 - Basically independent of the output from the combustion chamber 8 to the boiler room 1 heat and this at a constant flow rate of Heizkreismediums.

LIST OF REFERENCE NUMBERS

1

boiler room

1.1

outer wall

2

Return connection

3

Flow connection

4

Additional flow connection

5

flow guidance

5.1

opening

6

Facility

7

Main Flow connection

8th

combustion chamber

Claims (9)

A boiler comprising a boiler chamber (1) through which flows a heating medium medium, a return connection (2) for supplying the heating medium to the boiler room (1) and both a supply connection (3) and an additional supply connection (4) for discharging the heating medium from the boiler room ( 1), wherein the return connection (2) is designed to open into a flow guide (5) arranged in the boiler chamber (1) and having an opening (5.1) to the boiler chamber (1), wherein the flow guide (5) into the flow connection (3) formed ausmündend and means (6) for adjusting an optional by the flow connection (3) and / or via the opening (5.1) through the additional flow connection (4) flowing flow quantity is provided to Heizkreismedium,
characterized,
in that the flow connection (3) and the additional flow connection (4) are designed to open out into a common main flow connection (7). Heating boiler according to claim 1,
characterized,
that the flow guide (5) has a plurality of openings (5.1). Heating boiler according to claim 2,
characterized,
that the openings (5.1) are all formed on the same side of the flow guide (5). Heating boiler according to one of claims 1 to 3, wherein the boiler room (1) has an outer wall (1.1),
characterized,
in that the opening (5.1) is arranged pointing in the direction of the outer wall (1.1) on the flow guide (5). Heating boiler according to one of claims 1 to 4,
characterized,
that the device (6) is designed as a valve. Heating boiler according to one of claims 1 to 5,
characterized,
that the device (6) is arranged on the flow connection (3). Heating boiler according to one of claims 1 to 6,
characterized,
in that the device (6) is arranged between the flow guide (5) and the main flow connection (7). Heating boiler according to one of claims 1 to 7,
characterized,
that the flow guide (5) between the return port (2) and the flow connection (3) is integrally formed. Heating boiler according to one of claims 1 to 8,
characterized,
is arranged that the flow guide (5) adjacent and predominantly along an outer wall (1.1) of the boiler space (1).

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