EP1482242B1 - Disposition d'une chambre de combustion - Google Patents
Disposition d'une chambre de combustion Download PDFInfo
- Publication number
- EP1482242B1 EP1482242B1 EP20040006109 EP04006109A EP1482242B1 EP 1482242 B1 EP1482242 B1 EP 1482242B1 EP 20040006109 EP20040006109 EP 20040006109 EP 04006109 A EP04006109 A EP 04006109A EP 1482242 B1 EP1482242 B1 EP 1482242B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- combustion
- bottom wall
- wall
- limiting element
- 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.)
- Expired - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 153
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000003570 air Substances 0.000 description 29
- 239000000446 fuel Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 4
- 239000002250 absorbent Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D3/00—Burners using capillary action
- F23D3/40—Burners using capillary action the capillary action taking place in one or more rigid porous bodies
-
- 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
- F23M9/06—Baffles or deflectors for air or combustion products; Flame shields in fire-boxes
-
- 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
- F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
Definitions
- the present invention relates to a combustion chamber assembly, particularly for a vehicle heater, comprising a combustion chamber housing having an outer wall and a bottom wall, wherein in the bottom wall, a Verbrennungs Kunststoffzu réelle Episode is provided for supplying combustion air in a combustion chamber formed in the combustion chamber, as defined in the preamble of claim 1 is.
- the combustion air fed into a combustion chamber is generally the ambient air, so that when fed into the combustion chamber, this combustion air in general also has ambient temperature.
- this combustion air in general also has ambient temperature.
- the combustion air is conveyed to the combustion chamber housing axially, ie in the direction of the longitudinal center axis of a combustion chamber or a flame tube, it initially comes into contact with the bottom wall of the combustion chamber housing or a region of this bottom wall. As a result, this bottom wall is relatively strongly cooled.
- a combustion chamber arrangement is known from US 5 197 871 A known.
- a neck-shaped projection from which the combustion air required for combustion is conducted into a combustion chamber formed in a combustion chamber housing, starts from the bottom wall.
- an annular disc-shaped porous BrennstoffabsorbierSystem is supported.
- liquid fuel is introduced via a fuel supply.
- the fuel absorbent is received in a cup-shaped housing that encloses the fuel absorbent radially outward and in the direction away from the bottom wall. Towards the bottom wall, the fuel absorbent is not covered.
- the fuel absorbent body or the bowl-like housing surrounding it carries a cylindrical projection with a plurality of openings provided in a circumferential wall.
- this cylindric approach flows over the approach in the bottom wall supplied combustion air and passes through the opening radially outward into the combustion chamber.
- the bottom wall is covered with a multi-layer lining. This comprises the combustion chamber facing a multilayer evaporator fleece and between this multilayer evaporator fleece and the bottom wall a metal felt layer.
- the DE 195 07 556 A discloses a combustion chamber assembly having a combustion chamber housing surrounding a combustion chamber. From a bottom wall of the combustion chamber housing, a cylindrical Verbrennungs Kunststoffzu réelle Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoff Kunststoffishdies
- the bottom wall and an area of the peripheral wall of the combustion chamber housing are covered with a porous lining.
- a combustion chamber arrangement in particular for a vehicle heater, comprising a combustion chamber housing with an outer wall and a bottom wall, wherein in the bottom wall a Verbrennungs Kunststoffzu réelle Scheme is provided for supplying combustion air into a combustion chamber formed in the combustion chamber housing, wherein provided in the combustion chamber housing a limiting element is that limits an effective combustion area of the combustion chamber at a distance from the bottom wall.
- a porous evaporator medium is provided on a side of the outer wall of the combustion chamber housing facing the combustion chamber.
- the combustion chamber arrangement according to the invention thus ends by the provision of the limiting element that portion of the combustion chamber formed in the combustion chamber in which combustion can take place and is thus effectively used for combustion, already at a distance from the bottom wall.
- a reduced heat transfer contact is provided between the region in which combustion takes place and the bottom wall cooled comparatively strongly from the outside, and thus the temperature level in the combustion chamber or the region thereof in which combustion proceeds is substantially more uniform.
- an intermediate space be provided between the limiting element and the bottom wall.
- the intermediate space formed between the delimiting element and the bottom wall therefore forms an insulating layer which effects a further reduced heat transfer from the combustion chamber or the combustion taking place therein to the combustion chamber housing in this area.
- the gap is in communication with the effective combustion area of the combustion chamber.
- the gaseous medium present in the intermediate space is already at a somewhat elevated temperature, which in particular further reduces the heat flow from the effective region of the combustion chamber to the intermediate space.
- a combustion air inlet section to originate from the bottom wall and for the boundary element to be supported on the combustion air inlet section.
- a distance is provided at least in regions between an outer peripheral region of the limiting element and the outer wall of the combustion chamber housing.
- a distance is provided at least in regions between an outer peripheral region of the delimiting element and the porous evaporator medium.
- the present invention further relates to a heater, in particular for vehicles, comprising a combustion chamber arrangement according to the invention and a combustion air blower which promotes combustion air in the direction of the bottom wall of the combustion chamber to and through the combustion air inlet region thereof into the combustion chamber.
- the combustion chamber arrangement 10 comprises a substantially cup-shaped combustion chamber housing 12 with a substantially cylindrical or annular outer wall 14 and thus, for example, integrally designed and a combustion chamber 16 on one side axially - relative to a longitudinal center axis L of the combustion chamber housing 12 - limiting bottom wall 18.
- Mit the bottom wall is integrally formed may be a substantially likewise annular provided-combustion air inlet nozzle 20, so that in the then substantially annular bottom wall 18, a Verbrennungs Kunststoffzu slaughterkind 22 is formed, in which thedisputed matterte of an only schematically indicated combustion air blower 24 and indicated by an arrow B combustion air can flow.
- combustion air inlet nozzle 20 which essentially also provides an inner wall of the combustion chamber housing 12 so that a substantially annular combustion chamber 16 is formed
- a plurality of combustion air inlet openings 26 are formed distributed in the circumferential direction, so that the combustion air P conveyed through the combustion air blower 24 initially in the direction of Longitudinal axis L flows to the bottom wall 18, passes through the Verbrennungs Kunststoffzu réelle Scheme 22 into the combustion air inlet nozzle 20 and then flows through the combustion air inlet openings 26 substantially radially outward and thus enters the combustion chamber 16.
- a porous evaporator medium 30 is provided on an inner side 28 of the outer wall 14 of the combustion chamber housing 12.
- This porous evaporator medium 30 is preferably formed so that it covers the entire inner side 28.
- liquid fuel is fed from the outside through the outer wall 14 into the porous evaporator medium 30, so that it is distributed under Kapillarré Sign and then evaporates at the combustion chamber 16 lying down surface of the porous evaporator medium 16 then.
- a combustible or ignitable air / fuel mixture is generated.
- the ignition can be initiated via a Glühzündorgan or the like not recognizable in the figure, so that then exit the combustion exhaust gases from the bottom wall 18 axially remote and open end of the combustion chamber 16 and exit in an elongated in the direction of the longitudinal axis L flame tube 32 enter and flow through a flame shutter 35 therethrough.
- a ring-disk-like configured limiting element 34 is provided in the combustion chamber housing 12. This is pushed in the example shown on the combustion air inlet nozzle 20 and abuts a shoulder 36 formed thereon. For fixed support a locking ring can be provided. Also, a correspondingly tight fit between the limiting element 34 and the combustion air inlet nozzle is possible.
- the limiting element 34 is positioned so that it has a distance to the bottom wall 18, so that between the bottom wall 18 and this limiting element 34, a gap 38 is formed.
- the combustion chamber 16 provided in the combustion chamber housing 12 is subdivided into two regions, namely the already mentioned intermediate space and, on the other hand, an area 40 still effectively effective for combustion on the other side of the limiting element 34.
- the limiting element 34 assumes a diaphragm function in the combustion chamber arrangement 10 according to the invention, so that an insulation area is created towards the bottom wall 18 through the above-mentioned division of the entire combustion chamber 16 into the combustion region 40 and the combustion region or gap 38 which is not effective is. Namely, combustion will not take place in this space 38 solely because of the fact that substantially no combustion air will reach this area.
- the reduced heat output and the concomitant equalization of the temperature level in the combustion chamber 16 or the combustion effective area 40 makes it possible to increase the entire service life at high combustion efficiency due to the lower deposit generation .
- suitable building material can be used, such as e.g. a comparatively good thermal insulating material. It could be thought of using a ceramic component here. However, for the sake of easier production and cost reasons, it is of course also possible to use a metal element here.
- this limiting element 34 could also be carried on the outer wall 14 of the combustion-chamber housing 12 or, for example via spacers or the like, could be supported on the bottom wall 18. Furthermore, it goes without saying that the outer wall 14 does not necessarily have to be formed integrally with the bottom wall 18 and this does not necessarily have to be formed integrally with the combustion air inlet connection piece 20.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wick-Type Burners And Burners With Porous Materials (AREA)
Claims (7)
- Un arrangement de chambre de combustion, en particulier pour un dispositif de chauffage d'un véhicule, comprenant un boîtier de chambre de combustion (12) avec un paroi externe (14) et un paroi de fond (18), une section d'alimentation en air de combustion (22) pour conduire de l'air de combustion (P) à une chambre de combustion (16) prévue au sein du boîtier de chambre de combustion (12) étant prévue dans le paroi de fond, un élément de limitation (34) étant prévu dans le boîtier de chambre de combustion (12) limitant une section (40), efficace pour la combustion, de la chambre de combustion (12) à distance du paroi de fond (18), caractérisé par un médium d'évaporateur poreux (30) étant prévu à un côté (28) du paroi externe (14) du boîtier de chambre de combustion (12) tourné vers la chambre de combustion (16).
- Un arrangement de chambre de combustion selon la revendication 1, caractérisé par un interstice (38) étant prévu entre l'élément de limitation (34) et le paroi de fond (18).
- Un arrangement de chambre de combustion selon la revendication 2, caractérisé par ledit interstice (38) étant en communication avec la section (40) efficace pour la combustion de la chambre de combustion (16).
- Un arrangement de chambre de combustion selon une des revendications 1 à 3,
caractérisé par une section d'entrée d'air de combustion (20) s'étendant du paroi de fond (18) et par l'élément de limitation (34) étant supporté à la section d'entrée d'air de combustion (20). - Un arrangement de chambre de combustion selon la revendication 2, caractérisé par un écart étant prévu au moins partiellement entre une section circonférentielle extérieure d l'élément de limitation (34) et le paroi externe (12) du boîtier de chambre de combustion (12).
- Un arrangement de chambre de combustion selon la revendication 5, caractérisé par un écart étant prévu au moins partiellement entre une section circonférentielle extérieure d l'élément de limitation (34) et le médium d'évaporation poreux (30).
- Un dispositif de chauffage, en particulier un dispositif de chauffage pour un véhicule, comprenant un arrangement de chambre de combustion (10) selon une des revendications précédentes, et une soufflerie d'air de combustion (24) transportant de l'air de combustion (P) dans la direction du paroi de fond (18) du boîtier de chambre de combustion (12) envers et à travers de la section d'entrée d'air de combustion (22) du dernier dans la chambre de combustion (16).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10323899 | 2003-05-26 | ||
DE2003123899 DE10323899B3 (de) | 2003-05-26 | 2003-05-26 | Brennkammeranordnung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1482242A1 EP1482242A1 (fr) | 2004-12-01 |
EP1482242B1 true EP1482242B1 (fr) | 2011-01-26 |
Family
ID=32748319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040006109 Expired - Lifetime EP1482242B1 (fr) | 2003-05-26 | 2004-03-15 | Disposition d'une chambre de combustion |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1482242B1 (fr) |
DE (2) | DE10323899B3 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008028316A1 (de) * | 2008-06-13 | 2009-12-17 | J. Eberspächer GmbH & Co. KG | Brennkammerbaugruppe für einen Verdampferbrenner, insbesondere bei einem Fahrzeugheizgerät |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2520062B2 (ja) | 1991-08-06 | 1996-07-31 | 株式会社ミクニ | 蒸発式バ―ナ |
JP2520078B2 (ja) * | 1992-10-28 | 1996-07-31 | 株式会社ミクニアデック | 蒸発式バ―ナ |
DE19507556B4 (de) * | 1994-10-20 | 2004-12-30 | J. Eberspächer GmbH & Co. KG | Verfahren zum Starten eines Brenners für ein Fahrzeugheizgerät oder einen Partikelfilter-Regenerator |
DE19548223B4 (de) * | 1995-08-16 | 2005-05-04 | J. Eberspächer GmbH & Co. KG | Verdampferbrenner |
DE19717544A1 (de) * | 1997-04-25 | 1998-10-29 | Eberspaecher J Gmbh & Co | Verdampferbrenner für ein Heizgerät oder eine thermische Regeneration eines Abgas-Partikelfilters |
DE10130638A1 (de) * | 2001-06-26 | 2003-01-02 | Eberspaecher J Gmbh & Co | Verdampferbrenner |
-
2003
- 2003-05-26 DE DE2003123899 patent/DE10323899B3/de not_active Expired - Lifetime
-
2004
- 2004-03-15 EP EP20040006109 patent/EP1482242B1/fr not_active Expired - Lifetime
- 2004-03-15 DE DE200450012138 patent/DE502004012138D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10323899B3 (de) | 2004-08-26 |
EP1482242A1 (fr) | 2004-12-01 |
DE502004012138D1 (de) | 2011-03-10 |
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