WO2022078619A1 - Vorrichtung zum erwärmen eines mediums - Google Patents
Vorrichtung zum erwärmen eines mediums Download PDFInfo
- Publication number
- WO2022078619A1 WO2022078619A1 PCT/EP2021/000079 EP2021000079W WO2022078619A1 WO 2022078619 A1 WO2022078619 A1 WO 2022078619A1 EP 2021000079 W EP2021000079 W EP 2021000079W WO 2022078619 A1 WO2022078619 A1 WO 2022078619A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flue gas
- recesses
- flame tube
- longitudinal axis
- burner unit
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
- F23D11/36—Details, e.g. burner cooling means, noise reduction means
- F23D11/40—Mixing tubes or chambers; Burner heads
- F23D11/404—Flame tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
- F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
- F23M9/10—Baffles or deflectors formed as tubes, e.g. in water-tube boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/11401—Flame intercepting baffles forming part of burner head
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
- F23D2900/11403—Flame surrounding tubes in front of burner nozzle
-
- 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
Definitions
- the present invention relates to a device for heating at least one medium.
- the medium is, for example, air or water or any other liquid.
- air and a liquid e.g. water
- Air heaters are known in the prior art that have a burner unit for burning an air-gas mixture, for example.
- the resulting flue gas transfers its thermal energy to the (room) air to be heated via a heat exchanger.
- the heat is applied to a liquid, e.g. B. water transfer.
- Combination devices are also known which serve both to heat air and to heat water.
- the flue gas is first passed through a flame tube, which is located inside the heat exchanger. In addition, this can lead to improved and less polluting combustion. Examples of flame tubes can be found in DE 21 39 504 C3, EP 1 681 519 A2, DE 32 33 321 C2 or DE 100 19 890 C2.
- the flame tubes described there are open on the side facing away from the burner.
- DE 10 2006 054 821 A1 or US Pat. No. 2,779,398 A discloses a cover for the end face.
- the object on which the invention is based is to propose a device for heating at least one medium, the flame tube of which brings about an improvement over the prior art with regard to heat distribution.
- the invention achieves the object by means of a device for heating a medium, with a burner unit and a flame tube, the burner unit generating flue gas, the flame tube having a flue gas inlet, a longitudinal axis, a jacket extending along the longitudinal axis and a jacket located opposite the flue gas inlet
- CONFIRMATION COPY end face with the flue gas passing from the burner unit into the flame tube via the flue gas inlet, with a plurality of recesses being located in the shell, with the recesses having different dimensions and/or being distributed asymmetrically on the shell, with the longitudinal axis of the flame tube in a central plane is located, resulting in a first side and a second side of the shell through the median plane, and wherein recesses on the first side have smaller dimensions than recesses on the second side.
- a target criterion of the optimization is a flow pattern that is distributed as evenly as possible. Furthermore, there is an asymmetrical distribution of the recesses, at least with regard to their dimensions, ie with regard to their opening or average areas. The larger cutouts are on one side of the jacket and the smaller cutouts on the other side.
- the recesses are designed and arranged in such a way that a geometrically further path, starting from the flue gas inlet, is associated with larger dimensions and therefore with larger opening areas.
- the dimensions of the recesses thus increase in the direction away from the burner unit. Therefore, in this embodiment, conversely, the recesses closer to the burner unit have smaller dimensions and therefore smaller opening areas.
- the flame tube is surrounded by a heat exchanger, so that the shape and distribution of the recesses is such that the flue gas flows essentially uniformly over the heat exchanger. Therefore, in one embodiment, the recesses are designed and arranged in such a way that a geometrically further path, in the direction of the flue gas outlet from the heat exchanger, is associated with larger dimensions and therefore with larger opening areas. Furthermore, in one configuration, the shape and distribution is such that a pressure loss along the flame tube is essentially constant. In one embodiment, the invention relates to a burner/heat exchanger system (or to a device with a burner unit and a heat exchanger) with a centrally arranged burner and a one-sided exhaust gas discharge.
- the flame tube has a cylindrical shape with a circular or elliptical base.
- the flame tube of the device is arranged horizontally.
- the first side with the smaller recesses is located above the second side with the larger recesses along the force of gravity.
- the flue gas that thus rises upwards passes through narrower recesses than the flue gas that leaves the flame tube at a lower level.
- the device also has a flue gas outlet and that the flue gas travels from the flame tube to the flue gas outlet.
- the flue gas outlet is located above the flame tube against gravity.
- a one-sided flue gas outlet is implemented via the flue gas outlet.
- the flue gas outlet is located along a longitudinal side of the flame tube or the heat exchanger.
- the flue gas outlet is located more in the direction of the height (relative to the longitudinal axis of the flame tube) of the burner unit than at the level of the end face of the flame tube.
- the flame tube is located horizontally in a housing. In this configuration, the flame tube is located in a housing.
- One embodiment consists in that recesses on a side of the casing facing the flue gas outlet have smaller dimensions than recesses on a side facing away from the flue gas outlet.
- the flue gas which thus takes a geometrically shorter path from the interior of the flame tube to the flue gas outlet, passes through smaller gaps than the portion of the flue gas that initially moves away from the flue gas outlet and therefore experiences correspondingly less draft in the direction of the outlet.
- a majority of the recesses are located in a section of the jacket that is small compared to the overall length of the jacket. In this configuration, the recesses, or at least a majority of the recesses, accumulate on a portion along the longitudinal axis that is small compared to the overall length. In one embodiment, the section comprises less than half the total length and in another embodiment has a third or a quarter of the total length.
- the recesses are located in an area between a last third and a last quarter of the shell along the longitudinal axis in front of the end face.
- the recesses (or at least a majority thereof) are located in a rear end of the liner remote from the burner assembly. This has the advantage that the combustion educts in the flame are significantly more or even completely converted. This reduces the exhaust gas values in terms of pollutants such as CO, NOx or unburned hydrocarbons.
- One configuration consists in the end face being at least partially or completely closed.
- the flue gas can only leave the flame tube to a small extent--in the case of a partial closure--or not at all--in the case of a complete closure--through the end face. This is in contrast to a flame tube open at the front, as is known in the prior art.
- the recesses are essentially circular holes or (elongated) slots.
- the device also has a heat exchanger, and that the flame tube is located at least partially in the heat exchanger.
- the heat exchanger essentially has the basic shape of a cylinder or cone on the inside facing the flame tube.
- the flame tube is arranged concentrically or eccentrically in the heat exchanger.
- the heat exchanger has an essentially uniform inner profile in which the flame tube is located. In one embodiment, the flame tube is arranged centrally in the heat exchanger. In one embodiment, the flue gas outlet is located on a longitudinal side of the heat exchanger.
- the heat exchanger extends essentially in the horizontal direction.
- the burner unit is used to burn a fuel-air mixture.
- the fuel is, for example, gas or a suitably prepared liquid fuel, e.g. e.g. diesel or petrol.
- Fig. 1 shows a section through a schematic representation of the device
- FIG. 1 shows schematically a device 1 for heating air and water.
- a fuel-air mixture is burned in the burner unit 2, the fuel being a gas, for example.
- the resulting flue gas passes through the flame tube 3 and the recesses 34, 34 '(see FIG. FIG. 2) in the interior of the heat exchanger 4 and from there to the flue gas outlet 50, the z. B. with a - is connected fireplace - not shown here.
- the flue gas flows horizontally through the flame tube 3 from the flue gas inlet 30 .
- the longitudinal axis 31 of the flame tube 3 is horizontal.
- the heat exchanger 4 is circular-cylindrical.
- the surrounding units with regard to guiding the air to be heated or the water are not shown for the sake of clarity.
- the flame tube 3 is shown in FIG. It has a jacket 32, which extends along the longitudinal axis 31, and an end face 33, which is completely closed in the variant shown.
- the flue gas can thus only through the recesses 34, 34' in the jacket 32 escape.
- the recesses 34, 34' are located in the end of the flame tube 3 facing away from the flue gas inlet 30 or towards the end face 33.
- the flue gas must therefore pass through the flame tube 3 over a longer distance. This allows for more complete conversion of the combustion educts, so that fewer harmful substances are produced and discharged.
- the recesses 34, 34' are designed as circular holes with different diameters. Due to the horizontal positioning of the flame tube 3 in the device, the shell 32 of the flame tube 3 has a first 32' (or upper) side and a second (or lower) side 32''. Since (cf. FIG. 1) the flue gas outlet 50 is located above the flame tube 3 and also due to the thermal buoyancy, the flow path for the flue gas is shorter in the direction of the upper side 32'. On the upper side 32' there are recesses 34 with smaller dimensions, so that there are also smaller opening areas. The recesses 34' with larger dimensions are arranged on the lower side 32''. The flue gas is therefore discharged there from the flame tube 3 after a longer flow path via larger cross sections.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/040,190 US20230304659A1 (en) | 2020-10-12 | 2021-07-14 | Device for heating a medium |
EP21749767.6A EP4226081A1 (de) | 2020-10-12 | 2021-07-14 | Vorrichtung zum erwärmen eines mediums |
CN202180045790.3A CN115943273A (zh) | 2020-10-12 | 2021-07-14 | 用于加热介质的设备 |
CA3175812A CA3175812A1 (en) | 2020-10-12 | 2021-07-14 | Device for heating a medium |
AU2021363005A AU2021363005A1 (en) | 2020-10-12 | 2021-07-14 | Device for heating a medium |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020006264.4 | 2020-10-12 | ||
DE102020006264.4A DE102020006264A1 (de) | 2020-10-12 | 2020-10-12 | Vorrichtung zum Erwärmen eines Mediums |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022078619A1 true WO2022078619A1 (de) | 2022-04-21 |
Family
ID=77207147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/000079 WO2022078619A1 (de) | 2020-10-12 | 2021-07-14 | Vorrichtung zum erwärmen eines mediums |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230304659A1 (de) |
EP (1) | EP4226081A1 (de) |
CN (1) | CN115943273A (de) |
AU (1) | AU2021363005A1 (de) |
CA (1) | CA3175812A1 (de) |
DE (1) | DE102020006264A1 (de) |
WO (1) | WO2022078619A1 (de) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2779398A (en) | 1953-06-05 | 1957-01-29 | Hupp Corp | Forced draft liquid fuel burner of the retort type, and heating apparatus incorporating the same |
DE2139504A1 (de) | 1971-08-06 | 1973-02-22 | Eberspaecher J | Heizgeraet fuer mobile einheiten |
US4149842A (en) * | 1977-07-11 | 1979-04-17 | Benjamin Robert J | Waste oil burner |
DE3011249A1 (de) * | 1980-03-24 | 1982-01-21 | Thermostar Heisler + Leins oHG Heizungs-und Klimatechnik, 7250 Leonberg | Flammrohr eines oelvergasungsbrenners |
DE3233321A1 (de) * | 1982-09-08 | 1984-03-08 | Webasto-Werk W. Baier GmbH & Co, 8035 Gauting | Verdampfungsbrenner |
DE4339045A1 (de) * | 1993-11-16 | 1995-05-18 | Knoll Anlagenbau Gmbh | Lufterhitzer |
DE10019890C2 (de) | 2000-04-20 | 2003-05-22 | Webasto Thermosysteme Gmbh | Brenner mit Flammrohr |
EP1681519A2 (de) | 2005-01-13 | 2006-07-19 | J. Eberspächer GmbH & Co. KG | Wärmetauscherkörper und Fahrzeugheizgerät mit einem Wärmetauscherkörper |
DE102006054821A1 (de) | 2006-11-21 | 2008-10-02 | Webasto Ag | Brenner für ein Heizgerät zur Verbrennung flüssiger oder gasförmiger Brennstoffe und Baugruppe aus einem Brenner und einem Wärmeübertrager |
-
2020
- 2020-10-12 DE DE102020006264.4A patent/DE102020006264A1/de active Pending
-
2021
- 2021-07-14 US US18/040,190 patent/US20230304659A1/en active Pending
- 2021-07-14 WO PCT/EP2021/000079 patent/WO2022078619A1/de unknown
- 2021-07-14 AU AU2021363005A patent/AU2021363005A1/en active Pending
- 2021-07-14 CA CA3175812A patent/CA3175812A1/en active Pending
- 2021-07-14 CN CN202180045790.3A patent/CN115943273A/zh active Pending
- 2021-07-14 EP EP21749767.6A patent/EP4226081A1/de active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2779398A (en) | 1953-06-05 | 1957-01-29 | Hupp Corp | Forced draft liquid fuel burner of the retort type, and heating apparatus incorporating the same |
DE2139504A1 (de) | 1971-08-06 | 1973-02-22 | Eberspaecher J | Heizgeraet fuer mobile einheiten |
US4149842A (en) * | 1977-07-11 | 1979-04-17 | Benjamin Robert J | Waste oil burner |
DE3011249A1 (de) * | 1980-03-24 | 1982-01-21 | Thermostar Heisler + Leins oHG Heizungs-und Klimatechnik, 7250 Leonberg | Flammrohr eines oelvergasungsbrenners |
DE3233321A1 (de) * | 1982-09-08 | 1984-03-08 | Webasto-Werk W. Baier GmbH & Co, 8035 Gauting | Verdampfungsbrenner |
DE3233321C2 (de) | 1982-09-08 | 1986-08-07 | Webasto-Werk W. Baier GmbH & Co, 8035 Gauting | Verdampfungsbrenner |
DE4339045A1 (de) * | 1993-11-16 | 1995-05-18 | Knoll Anlagenbau Gmbh | Lufterhitzer |
DE10019890C2 (de) | 2000-04-20 | 2003-05-22 | Webasto Thermosysteme Gmbh | Brenner mit Flammrohr |
EP1681519A2 (de) | 2005-01-13 | 2006-07-19 | J. Eberspächer GmbH & Co. KG | Wärmetauscherkörper und Fahrzeugheizgerät mit einem Wärmetauscherkörper |
DE102006054821A1 (de) | 2006-11-21 | 2008-10-02 | Webasto Ag | Brenner für ein Heizgerät zur Verbrennung flüssiger oder gasförmiger Brennstoffe und Baugruppe aus einem Brenner und einem Wärmeübertrager |
Also Published As
Publication number | Publication date |
---|---|
CA3175812A1 (en) | 2022-04-21 |
US20230304659A1 (en) | 2023-09-28 |
CN115943273A (zh) | 2023-04-07 |
DE102020006264A1 (de) | 2022-04-14 |
EP4226081A1 (de) | 2023-08-16 |
AU2021363005A1 (en) | 2022-11-24 |
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