EP0878674A2 - Kessel zur Aufbereitung von Warmwasser - Google Patents
Kessel zur Aufbereitung von Warmwasser Download PDFInfo
- Publication number
- EP0878674A2 EP0878674A2 EP98102442A EP98102442A EP0878674A2 EP 0878674 A2 EP0878674 A2 EP 0878674A2 EP 98102442 A EP98102442 A EP 98102442A EP 98102442 A EP98102442 A EP 98102442A EP 0878674 A2 EP0878674 A2 EP 0878674A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flow
- boiler
- chamber
- water
- heating surfaces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 5
- 239000000567 combustion gas Substances 0.000 abstract 1
- 239000002918 waste heat Substances 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000008236 heating water Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/0036—Dispositions against condensation of combustion products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
- F24H9/001—Guiding means
- F24H9/0015—Guiding means in water channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
- F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
- F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
- F24H1/285—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber
Definitions
- the invention relates to a boiler for processing Containing hot water with a water-bearing housing a supply and return connection piece and one in the housing arranged, essentially horizontal combustion chamber according to Preamble of claim 1.
- Known boilers generally have so-called secondary heating surfaces above the horizontally arranged combustion chamber, through which the heating gases flow on the way to the flue gas outlet.
- Return inflow plates or chambers are formed under the mouth of a return connection piece, which should prevent a short-circuit flow from the return to the flow connection piece in the upper region of the boiler or the water jacket.
- These return inflow plates therefore direct the cold return water flow into the lower area of the water jacket or the boiler.
- the flowing water is heated, whereby thermal stratification occurs in the boiler.
- the water temperature corresponds approximately to the return temperature, in contrast, in the upper area the flow temperature.
- the water temperature is below the flow temperature.
- a boiler consisting of a water-carrying housing provided with a supply and return connection piece and a horizontal combustion chamber enclosed therein as well as secondary heating surfaces.
- a special water flow inside the boiler it should be possible to avoid dropping below the dew point in the area of the secondary heating surfaces.
- the formation of lateral recesses on the lower boundary plate of the return inflow chamber is required to direct the main flow of the return water in the direction of the front wall of the boiler and secondary heating surfaces.
- the known return inflow chamber must be run over a large section of the horizontal length of the boiler, with the result of a more uneven temperature distribution over the entire boiler volume.
- a baffle or a chamber with one or more bypass openings is arranged in the area below the flow connection piece.
- the baffle or chamber extends past the secondary heating surfaces into the lower boiler area. Due to the structural arrangement of the baffle plate or the design of the chamber, heating water from the lower colder area is led directly to the flow section and mixed there with warmer water from the area of the secondary heating surfaces or the upper boiler section to the flow water by means of the bypass openings.
- the amounts of water in the warm and of the cold partial flow from the upper or lower boiler section about the shape of the baffle or the size and design the chamber and the specification of the bypass cross sections to adjust. Due to the given relationships, the Temperature of the warm partial flow can be increased by the corresponding partial flow in relation to the amount of colder partial flow is reduced.
- the loss of the return guide plate results in the area a zone below the return connector, in the incoming cold return water with the rising warm water is mixed so that inside the boiler, that means in the water jacket, an even temperature distribution is present.
- the temperature drops below the dew point in the range of the secondary heating surfaces in boiler mode is effectively prevented.
- the flow guide plate or the corresponding chamber points to achieve the desired thermal flows in the upper section directed to the flow connection piece mentioned, at least one bypass opening on, whereby at the same time an undesirable vapor bubble formation at maximum Heating power can be avoided.
- the flow guide plate or the chamber formed therefrom essentially semi-cylindrical or semi-circular design, being in the area of the open cylinder or semicircular section this a constriction to throttle the Cold water supply into or surrounded by the baffle has enclosed Nachschaltsammlungdon. This will as stated, an excessive supply of cold water in the baffle or chamber interior, which is at risk of condensation effectively prevented.
- the cross-sectional area is the bypass openings based on the target temperature of the flow water can be changed, creating the desired further homogenization of the temperature distribution of the Water jacket can be supported.
- bypass openings are both on the front between flow guide plate or chamber for the inflow of heated water to the flow connector as well upper area of the chamber for a targeted mixing of Water of different temperatures in the area of the inlet connection to ensure.
- the boiler shown in the figures for the preparation of Hot water has a water-carrying housing 1, the one Flow connector 2, as well as a return connector 3 has.
- a special baffle 6 for formation a corresponding chamber provided.
- the guide plate 6 or the chamber has a semi-elliptical, semi-circular or semi-cylindrical Form and encloses the Nachschaltsammlung vom 5 or the condensation Area 13.
- the lower area is of the guide plate 6 to the central longitudinal axis of the housing 1 or tapered towards the combustion chamber 4 or narrowed to one Cold water flow from the lower area of the boiler to those at risk of condensation Reduce area 13.
- the guide plate 6 or the chamber formed therefrom has Bypass openings 12 through which hot water flows 8 can be made with boiler water from the colder area 9 mix.
- the flow water 10 then has one Temperature which is the mixed temperature of warm boiler water 8 with water from the colder area 9.
- the guide plate 6 extends as shown in FIG. 1, only over a section of the secondary heating surfaces 5, namely over such a section that leads to the flue gas outlet 11 is directed towards and the result of the already cooled Flue gases have the lowest temperature and are therefore special is at risk of condensation.
- the set temperature of the flow water is not one external control shown and the amount of heating water from the heating system, comprising pump, mixer, etc. determined.
- the Water quantities of the warm and the cold partial flow result then about the shape of the baffle or this formed chamber and the size of the bypass openings or the Bypass cross sections.
- the Cross-sectional area of the bypass openings through a not shown adjustable aperture or the like depending changed from the target temperature of the flow water from the outside be, so that there are optimal flow conditions within of the boiler depending on the respective load let set.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Incineration Of Waste (AREA)
- Chimneys And Flues (AREA)
Abstract
Description
Unter der Einmündung eines Rücklaufanschlußstutzens werden Rücklaufeinströmbleche oder -kammern ausgebildet, welche im oberen Bereich des Kessels bzw. des Wassermantels eine Kurzschlußströmung vom Rücklauf- zum Vorlaufanschlußstutzen verhindern sollen. Diese Rücklaufeinströmbleche lenken demnach die kalte Rücklaufwasserströmung in den unteren Bereich des Wassermantels bzw. des Kessels. Auf dem weiteren Weg wird das strömende Wasser erwärmt, wobei sich eine thermische Schichtung im Kessel einstellt. Im unteren Bereich des Kessels entspricht die Wassertemperatur in etwa der Rücklauftemperatur hingegen im oberen Bereich der Vorlauftemperatur. Im Bereich der Nachschaltheizflächen liegt die Wassertemperatur unter der Vorlauftemperatur.
Um die geforderten Wirkungen zu erreichen, muß die bekannte Rücklaufeinströmkammer über einen großen Abschnitt der horizontalen Länge des Kessels geführt werden, mit der Folge einer ungleichmäßigeren Temperaturverteilung über das gesamte Kesselvolumen.
Durch die konstruktive Anordnung des Leitbleches bzw. Ausbildung der Kammer wird Heizwasser aus dem unteren kälteren Bereich direkt zum Vorlaufabschnitt geleitet und dort mittels der Bypaßöffnungen mit wärmerem Wasser aus dem Bereich der Nachschaltheizflächen bzw. dem oberen Kesselabschnitt zum Vorlaufwasser hin vermischt.
- Fig. 1
- eine prinzipielle Darstellung des Kessels zur Aufbereitung von Warmwasser in seitlicher Schnittdarstellung und
- Fig. 2
- eine Querschnittsdarstellung des Kessels längs der Linie A-A aus Fig. 1.
- 1
- Gehäuse
- 2
- Vorlaufanschlußstutzen
- 3
- Rücklaufanschlußstutzen
- 4
- Brennkammer
- 5
- Nachschaltheizflächen
- 6
- Vorlaufleitblech
- 7
- Rücklaufleitblech
- 8
- Warmwasserstrom
- 9
- Kaltwasserstrom
- 10
- Vorlaufwasser
- 11
- Rauchgasabzug
- 12
- Bypaßöffnungen
- 13
- kondensationsgefährderter Bereich
Claims (7)
- Kessel zur Aufbereitung von Warmwasser mit einem wasserführenden Gehäuse (1), enthaltend einen Vor- und Rücklaufanschlußstutzen (2, 3) sowie eine im Gehäuse (1) angeordnete im wesentlichen horizontale Brennkammer (4), welche mit Nachschaltheizflächen (5) in Verbindung steht die von Heizgasen hin zu einem Rauchgasabzug (11) durchströmt werden, wobei mindestens der Vorlaufanschlußstutzen (2) an der Oberseite des Gehäuses (1) befindlich ist,
dadudurch gekennzeichnet, daß sich vom Bereich des Vorlaufanschlußstutzens (2) im Inneren des Gehäuses hin zum Gehäuseboden gerichtet, die Nachschaltheizflächen (5) umgebend, ein Vorlaufleitblech (6) oder eine Vorlaufkammer erstreckt, wobei das Vorlaufleitblech oder die -kammer im oberen, zum Vorlaufanschlußstutzen (2) gerichteten Abschnitt mindestens eine Bypaßöffnung (12) aufweist, so daß ein Unterschreiten der Taupunkttemperatur im Bereich der Nachschaltheizflächen (5) durch Beeinflußung der Kaltwasserzuströmung im Kesselbetrieb verhinderbar ist. - Kessel nach Anspruch 1,
dadurch gekennzeichnet, daß das Vorlaufleitblech (6) oder die -kammer die Nachschaltheizflächen (5) im wesentlichen halbelliptisch, halbzylindrisch oder halbkreisförmig umgibt, wobei im offenen Bereich des Zylinders der Halbellipse oder des Halbkreisabschnittes dieser einer Verengung zur Drosselung der Kaltwasserzufuhr in den kondensatgefährdeten Leitblech- oder Kammerinnenraum (13) aufweist. - Kessel nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß unterhalb eines an der Oberseite des Kessels vorgesehenen Rücklaufanschlußstutzens (3) ein Rücklaufleitblech (7) zur Verhinderung einer thermischen Kurzschlußströmung hin zum Vorlaufanschlußstutzen (2) angeordnet ist. - Kessel nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der Rücklaufanschlußstutzen (3) an der Kesselunterseite angeordnet ist. - Kessel nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß die Querschnittsfläche mindestens einer Bypaßöffnung (12) veränderbar ist. - Kessel nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß sich Bypaßöffnungen (12) sowohl stirnseitig zwischen Vorlaufleitblech (6) oder -kammer für den Zustrom von erwärmten Wasser hin zum Vorlaufanschlußstutzen (2) als auch im oberen Bereich der Kammer selbst befinden. - Kessel nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß sich das Vorlaufleitblech (6) oder die -kammer über einen zum Rauchgasabzug (11) hin gerichteten Teilabschnitt der Nachschaltheizflächen (5) erstreckt.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19720456 | 1997-05-15 | ||
| DE19720456 | 1997-05-15 | ||
| DE19724942 | 1997-06-12 | ||
| DE19724942A DE19724942C1 (de) | 1997-05-15 | 1997-06-12 | Kessel zur Aufbereitung von Warmwasser |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0878674A2 true EP0878674A2 (de) | 1998-11-18 |
| EP0878674A3 EP0878674A3 (de) | 2000-05-24 |
| EP0878674B1 EP0878674B1 (de) | 2004-07-14 |
Family
ID=26036582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98102442A Expired - Lifetime EP0878674B1 (de) | 1997-05-15 | 1998-02-12 | Kessel zur Aufbereitung von Warmwasser |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0878674B1 (de) |
| AT (1) | ATE271209T1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29602075U1 (de) | 1996-02-07 | 1996-05-23 | Buderus Heiztechnik Gmbh, 35576 Wetzlar | Heizkessel |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3502435A1 (de) * | 1985-01-25 | 1986-07-31 | Hans Dr.h.c. 3559 Battenberg Vießmann | Heizungskessel |
-
1998
- 1998-02-12 EP EP98102442A patent/EP0878674B1/de not_active Expired - Lifetime
- 1998-02-12 AT AT98102442T patent/ATE271209T1/de active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29602075U1 (de) | 1996-02-07 | 1996-05-23 | Buderus Heiztechnik Gmbh, 35576 Wetzlar | Heizkessel |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0878674A3 (de) | 2000-05-24 |
| EP0878674B1 (de) | 2004-07-14 |
| ATE271209T1 (de) | 2004-07-15 |
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