EP1589298A2 - Heizgerät, insbesondere für ein Fahrzeug - Google Patents
Heizgerät, insbesondere für ein Fahrzeug Download PDFInfo
- Publication number
- EP1589298A2 EP1589298A2 EP05007314A EP05007314A EP1589298A2 EP 1589298 A2 EP1589298 A2 EP 1589298A2 EP 05007314 A EP05007314 A EP 05007314A EP 05007314 A EP05007314 A EP 05007314A EP 1589298 A2 EP1589298 A2 EP 1589298A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion
- product guide
- guide member
- combustion product
- heat transfer
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 97
- 238000012546 transfer Methods 0.000 claims abstract description 31
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000007704 transition Effects 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 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
- F24H1/263—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 with a dry-wall combustion chamber
Definitions
- the present invention relates to a heater, in particular for a vehicle, as used for example as a heater or heater Can be used to burn by burning of generally liquid Fuel and combustion air to produce hot combustion products and the transported in these combustion products heat to a heating medium, so for example, in a vehicle interior to be introduced air or a liquid medium, in a heat exchanger assembly transferred to.
- the products of combustion generally come from an open end of the tube-like or generally cylindrical flame tube out there and meet there on the bottom area of a generally pot-like designed and surrounding the flame tube heat exchanger assembly on. Due to the fact that also in the area of the flame tube at Flow through the same still combustion will take place, thus moves the Combustion also closer to the bottom portion of the heat exchanger assembly with the result that even when hitting the bottom wall a complete combustion has not yet taken place and by the spontaneous cooling will not continue. The consequence of this is an increased CO emissions.
- the conventional design of the flame tube in its outlet end open, otherwise essentially a closed one, is cylindrical component, further leads to the problem that the emerging from the flame tube, at the bottom portion of the heat exchanger assembly deflected and then between the flame tube and a peripheral area the heat exchanger assembly flowing combustion products forming a layer flow, in which the layer, the along the surface of the peripheral portion of the heat exchanger assembly Although their heat flows relatively well on the heat exchanger assembly can transfer while that flow layer, which is essentially flows along the outer surface of the flame tube, for heat transfer contribute to the heat exchanger arrangement only reduced can.
- a heater in particular to provide for a vehicle in which even in a compact size Heat transported in combustion products improves towards one warming medium can be transferred.
- the combustion product guide element in the direction of its Longitudinal axis is not open as usual, but basically by a Wall is completed or limited.
- the impact of the whole Combustion product flow to the bottom portion of the heat exchanger assembly can thus be prevented.
- the outlet end region of the Combustion product guide member provided outlet openings then ensure a defined distribution of the combustion product flow at the transition into the heat transfer flow space and thus a more even and therefore more efficient flow of the floor area and the peripheral portion of the heat exchanger assembly.
- outlets in the Bottom wall and / or a peripheral wall of the combustion product guide element are formed.
- one through all the outlet openings in the outlet end provided total flow cross-sectional area smaller is as provided by the tubular combustion product guide member Flow cross-sectional area.
- Fig. 1 is a heater 10 with its for the description of the present Invention essential system areas shown. That's one provided generally with 12 designated combustion chamber area, the one For example, pot-shaped designed combustion chamber housing 14 with a has combustion chamber 16 formed therein. Over several combustion air inlet openings 18 passes through an unillustrated combustion air blower supplied combustion air in the combustion chamber 16 a.
- fuel required for combustion can also be used by evaporation from a porous evaporator medium, not shown to be provided. The combustion can not be done by one either shown ignition element can be started.
- the combustion products emerging from the combustion chamber 16 occur first through a Flammblende 20 and thus reach the Entry end portion 22 of an effective as a flame tube combustion product guide element 24.
- This flame tube or combustion product guide element 24 for example made of sheet metal or other metal material, made of ceramic heating material or the like. can be made, has an approximate cylindrical and in the direction of a longitudinal axis L extending Umfansgwandung 26 on. In an exit end region 28 goes this peripheral wall 26 in a bottom wall 30, which in the direction the longitudinal axis L, the flame tube 24 terminates or completes.
- outlet openings 32 are distributed both on the peripheral wall 26 and the bottom wall 30th
- the flame tube or combustion product guide element 24 is surrounded from a heat exchanger assembly, generally designated 34.
- a heat exchanger assembly generally designated 34.
- the heat exchanger arrangement 34 basically comprises a peripheral wall portion 42, in Essentially provided by peripheral walls 44, 46 of the housing components 36, 38, and a bottom portion 48, substantially provided through bottom walls 50, 52 of the housing components 36, 38th An their end portions remote from the bottom walls 50, 52 are the two housing components 36, 38 in the region of their peripheral walls 44, 46th firmly connected together and fluid-tight.
- Heat transfer flow space Between the flame tube 24 and the inner housing member 36 is a generally designated 54 Heat transfer flow space formed.
- the Heat transporting combustion products heat to the housing component 36, which in turn transfers this heat to that in the volume range 40 circulating medium to be heated.
- the flame tube 24 By designing the flame tube 24 with the bottom wall 32, so the basic conclusion of the flame tube 24 in the direction of his Longitudinal axis L at the exit end region 28, and providing a plurality of distributed outlets are various advantages achieved. First, it ensures that not the entire stream of hot combustion products on the bottom portion 48 of the heat exchanger assembly 34, i. the bottom wall 50 of the inner housing member 36, hits. This leads to a considerable thermal Relief of this area of the heat exchanger assembly 34 and a Enlargement of that surface on which the from the flame tube 24th exiting hot combustion products on the heat exchanger assembly 34 hit directly. Next is by providing the outlet openings 32 a stronger turbulence in the flow space 54 entering combustion products forced.
- Total flow cross-sectional area is smaller than that through the flow cross-section the flame tube 24 generally provided passage area. This will cause a flow acceleration through the openings 32 passing Verbrennunggs and even further ensures increased turbulence formation.
- This turbulence formation turn has the consequence that in the event that on leaving the Flame tube 24 the incineration was not yet completely completed, increased support for this incineration can be obtained, and has the further advantage that the formation of a layer flow improves can be prevented. This also affects the others Flow of the combustion products in the flow space 24, so that even there, a layer flow can be increasingly prevented.
- the Turbulence formation and the defined outflow from the flame tube 24 can also be supported, that the openings 32 are not in one regular pattern and of uniform size, but that, for example, a more or less irregular Distribution of the same on the peripheral wall 26 and / or the Bottom wall 30 is provided. In this way you can at the same time influencing the preferred outflow direction or Outflow can be obtained.
- the combustion products in the flow space 54 preferably flow in the region which is substantially directly in Direction leads to the exit 56.
- the combustion products in the illustration of FIG. 1 is discharged upward, so will Forcibly also a flow through those volume areas of the Flow space 54 obtained, which are farther away from the outlet 56.
- There in the inventively designed flame tube 54 in the field of Peripheral wall 26 of the flame tube 24 is a substantially vertical Flow of the surface of the housing member 36 can be obtained is also characterized improved heat transfer to this Housing member 36 ensured.
- the use suitable materials for example, for the flame tube 24, such as e.g. the already mentioned heating ceramic material (silicon carbide), can in turn, lead to improved heat radiation feedback into the flame, thus further improving the combustion results entry.
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)
- Air-Conditioning For Vehicles (AREA)
- Wick-Type Burners And Burners With Porous Materials (AREA)
Abstract
Description
- einen Brennkammerbereich zur Verbrennung von Brennstoff und zur Erzeugung von heißen Verbrennungsprodukten,
- ein rohrartiges Verbrennungsproduktführungselement mit einem Eintrittsendbereich, in welchem die die Brennkammer verlassenden Verbrennungsprodukte in das Verbrennungsproduktführungselement eintreten, und mit einem Austrittsendbereich, in welchem wenigstens ein Teil der Verbrennungsprodukte aus dem Verbrennungsproduktführungselement austritt,
- eine Wärmetauscheranordnung, welche zusammen mit dem Verbrennungsproduktführungselement einen Wärmeübertragungsströmungsraum begrenzt und im Wesentlichen topfartig ausgebildet ist mit einem das Verbrennungsproduktführungselement außen umgebenden Umfangsbereich und einem in Richtung einer Längsachse des Verbrennungsproduktführungselements auf den Austrittsendbereich folgenden Bodenbereich,
- Fig. 1
- eine Längsschnittansicht der wesentlichen Bereiche eines erfindungsgemäßen Heizgeräts;
- Fig. 2
- eine Teil-Querschnittdarstellung verschiedener Komponenten des in Fig. 1 gezeigten Heizgeräts.
Claims (7)
- Heizgerät, insbesondere für ein Fahrzeug, umfassend:einen Brennkammerbereich (12) zur Verbrennung von Brennstoff und zur Erzeugung von heißen Verbrennungsprodukten,ein rohrartiges Verbrennungsproduktführungselement (24) mit einem Eintrittsendbereich (22), in welchem die eine Brennkammer (16) verlassenden Verbrennungsprodukte in das Verbrennungsproduktführungselement (24) eintreten, und mit einem Austrittsendbereich (28), in welchem wenigstens ein Teil der Verbrennungsprodukte aus dem Verbrennungsproduktführungselement (24) austritt,eine Wärmetauscheranordnung (34), welche zusammen mit dem Verbrennungsproduktführungselement (24) einen Wärmeübertragungsströmungsraum (54) begrenzt und im Wesentlichen topfartig ausgebildet ist mit einem das Verbrennungsproduktführungselement (24) außen umgebenden Umfangsbereich (42) und einem in Richtung einer Längsachse (L) des Verbrennungsproduktführungselements (24) auf den Austrittsendbereich (28) folgenden Bodenbereich (48),
- Heizgerät nach Anspruch 1,
dadurch gekennzeichnet, dass Austrittsöffnungen (32) in der Bodenwandung (30) oder/und einer Umfangswandung (26) des Verbrennungsproduktführungselements (24) ausgebildet sind. - Heizgerät nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass eine durch alle Austrittsöffnungen (32) im Austrittsendbereich (28) bereitgestellte Gesamt-Strömungsquerschnittsfläche kleiner ist, als eine durch das rohrartige Verbrennungsproduktführungselement (24) bereitgestellte Strömungsquerschnittsfläche. - Heizgerät nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass an einer dem Wärmeübertragungsströmungsraum (54) zugewandten Seite des Umfangsbereichs (42) der Wärmetauscheranordnung (34) Wärmeübertragungsrippen (58) vorgesehen sind und dass in dem den Austrittsendbereich (28) umgebenden Abschnitt des Umfangsbereichs (48) keine Wärmeübertragungsrippen oder Wärmeübertragungsrippen mit geringerer Rippenhöhe vorgesehen sind. - Heizgerät nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet, dass im Austrittsendbereich (28) das Verbrennungsproduktführungselement (24) mit seiner Bodenwandung (36) und seiner Umfangswandung (26) im Wesentlichen parallel zum Bodenbereich (48) beziehungsweise zum Umfangsbereich (42) der Wärmetauscheranordnung (34) positioniert ist. - Heizgerät nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass wenigstens ein Teil der im Austrittsendbereich (28) vorgesehenen Austrittsöffnungen (32) zueinander unterschiedliche Querschnittsformen oder/und unterschiedliche Strömungsquerschnittsflächen aufweist. - Heizgerät nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass die Austrittsöffnungen (32) im Austrittsendbereich (28) in Umfangsrichtung ungleichmäßig verteilt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410019870 DE102004019870A1 (de) | 2004-04-23 | 2004-04-23 | Heizgerät, insbesondere für ein Fahrzeug |
DE102004019870 | 2004-04-23 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1589298A2 true EP1589298A2 (de) | 2005-10-26 |
EP1589298A3 EP1589298A3 (de) | 2006-09-06 |
EP1589298B1 EP1589298B1 (de) | 2010-07-07 |
Family
ID=34934735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20050007314 Expired - Lifetime EP1589298B1 (de) | 2004-04-23 | 2005-04-04 | Heizgerät, insbesondere für ein Fahrzeug |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1589298B1 (de) |
DE (2) | DE102004019870A1 (de) |
RU (1) | RU2290327C1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE102008034139B4 (de) | 2008-07-22 | 2022-11-10 | Eberspächer Climate Control Systems GmbH | Heizgerät, insbesondere für ein Fahrzeug |
DE102011004159A1 (de) * | 2011-02-15 | 2012-08-16 | J. Eberspächer GmbH & Co. KG | Wärmetauscheranordnung, insbesondere für ein brennstoffbetriebenes Fahrzeugheizgerät |
DE102013020469A1 (de) * | 2013-12-06 | 2015-06-11 | Webasto SE | Wärmeübertrager und Verfahren zum Herstellen eines Wärmeübertragers |
DE102017119077A1 (de) * | 2017-08-21 | 2019-02-21 | Eberspächer Climate Control Systems GmbH & Co. KG | Fahrzeugheizgerät |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB348264A (en) | 1930-03-04 | 1931-05-14 | Thomas Clarkson | Improvements in or relating to water heaters or steam generators |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3136839A1 (de) * | 1981-09-16 | 1983-03-31 | Webasto-Werk W. Baier GmbH & Co, 8035 Gauting | Fahrzeugheizung |
DE4430196C1 (de) * | 1994-08-25 | 1996-01-18 | Eberspaecher J | Fahrzeugheizgerät mit Flammenwächter |
DE10019890C2 (de) * | 2000-04-20 | 2003-05-22 | Webasto Thermosysteme Gmbh | Brenner mit Flammrohr |
DE10146610A1 (de) * | 2001-09-21 | 2003-04-24 | Eberspaecher J Gmbh & Co | Wärmetauscheranordnung für eine Heizeinrichtung, insbesondere eine Kraftfahrzeugheizung |
-
2004
- 2004-04-23 DE DE200410019870 patent/DE102004019870A1/de not_active Withdrawn
-
2005
- 2005-04-04 EP EP20050007314 patent/EP1589298B1/de not_active Expired - Lifetime
- 2005-04-04 DE DE200550009849 patent/DE502005009849D1/de not_active Expired - Lifetime
- 2005-04-22 RU RU2005112099/11A patent/RU2290327C1/ru not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB348264A (en) | 1930-03-04 | 1931-05-14 | Thomas Clarkson | Improvements in or relating to water heaters or steam generators |
Also Published As
Publication number | Publication date |
---|---|
DE502005009849D1 (de) | 2010-08-19 |
EP1589298A3 (de) | 2006-09-06 |
RU2290327C1 (ru) | 2006-12-27 |
DE102004019870A1 (de) | 2005-11-17 |
RU2005112099A (ru) | 2006-10-27 |
EP1589298B1 (de) | 2010-07-07 |
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