US20230400183A1 - Burner unit - Google Patents
Burner unit Download PDFInfo
- Publication number
- US20230400183A1 US20230400183A1 US18/033,175 US202118033175A US2023400183A1 US 20230400183 A1 US20230400183 A1 US 20230400183A1 US 202118033175 A US202118033175 A US 202118033175A US 2023400183 A1 US2023400183 A1 US 2023400183A1
- Authority
- US
- United States
- Prior art keywords
- recesses
- air guide
- burner unit
- dome
- combustion air
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000002485 combustion reaction Methods 0.000 claims description 46
- 230000000694 effects Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 239000011369 resultant mixture Substances 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
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L1/00—Passages or apertures for delivering primary air for combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D3/00—Burners using capillary action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D3/00—Burners using capillary action
- F23D3/02—Wick burners
- F23D3/18—Details of wick burners
- F23D3/22—Devices for mixing evaporated fuel with air
-
- 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
- F23D2900/21—Burners specially adapted for a particular use
- F23D2900/21002—Burners specially adapted for a particular use for use in car heating systems
-
- 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
- F23D2900/31018—Nozzles and cleaning devices therefor
Definitions
- the present disclosure relates to a burner unit for combusting an air-fuel mixture.
- the burner unit is, for example, part of a heater for heating air or a liquid, e.g. water.
- the fuel is, for example, diesel, gasoline or a combustible gas (e.g. propane).
- DE 295 11 384 U1 describes a burner unit having an outer tube and an inner tube.
- the inner tube is located within the outer tube and allows combustion air to be supplied via slots.
- the fuel is introduced into the outer tube.
- the resultant mixture of air and fuel is combusted in a flame tube.
- the structure of a combustion chamber is further taught in DE 633 304, DE 44 42 425 B4, DE 44 47 986 B4, DE 195 29 994 A1 or DE 10 2013 109 184 A1.
- a burner unit for combusting an air-fuel mixture having a combustion space, a combustion air guide dome and a fuel inlet, wherein the combustion air guide dome is located in the combustion space and has recesses, wherein the fuel inlet opens into the combustion space, and wherein the recesses have a larger width on an inside of the combustion air guide dome than on an outside of the air supply dome.
- the recesses in the combustion dome through which the (combustion) air passes from the interior of the dome into the combustion space, do not have a constant width but narrow from the inside to the outside.
- the view in each case here is in a plane perpendicular to a longitudinal axis of the dome and/or the burner unit.
- the dome may alternatively also be referred to as an inner tube or inner cylinder.
- the fuel that is, e.g. diesel, enters the combustion space via a fuel inlet. It has been found that the narrowing of the recesses improves mixing. This results, for example, in a more homogeneous velocity distribution in the combustion space. Furthermore, pressure losses can be avoided, for example.
- the recesses are, for example, in the form of slots along the longitudinal axis.
- the air enters the interior of the dome via a fan, for example, and from there into the combustion space around the air supply dome.
- the burner unit is part of a heating system.
- One configuration consists in that the recesses taper from the inside to the outside.
- the side walls of the recesses have an even profile with a constant slope.
- One configuration provides that the recesses are configured such that they produce a nozzle effect for air directed out of the combustion air guide dome.
- One configuration consists in that the recesses have a substantially constant profile along a longitudinal axis of the air supply dome.
- the recesses are axially oriented slots.
- An alternative configuration provides that the recesses change their shape along a longitudinal axis of the air supply dome.
- the combustion air guide dome may be closed or open on the face side.
- the longitudinal axis of the combustion air guide dome is perpendicular to the direction in which the recesses become narrower from the inside to the outside.
- combustion air guide dome has a substantially circular cylindrical shape.
- the combustion air guide dome may be closed or open on the face side.
- One configuration provides that the recesses have different heights along a longitudinal axis of the air supply dome. In this configuration, the recesses have different lengths or extents in the axial direction.
- An alternative configuration consists in that the recesses have a common height along a longitudinal axis of the air supply dome. In this configuration, the recesses have a common or equal axial extent along the longitudinal axis.
- FIG. 1 shows a section taken through a schematic representation of the burner unit along the longitudinal axis
- FIG. 2 shows a section taken through the burner unit perpendicular to the longitudinal axis.
- FIG. 1 schematically shows a burner unit 1 , which is for example part of a heating system.
- a mixture of a fuel, e.g. gas or diesel, and combustion air is combusted in the burner space 2 .
- Good mixing is required for a combustion which is as effective as possible and which also produces as few pollutants as possible.
- the combustion air enters the combustion space 2 via the recesses 4 in the combustion air guide dome 3 .
- the recesses 4 are in the form of slots here, which originate from the inner face side of the combustion air guide dome 3 and extend along the longitudinal axis 6 of the burner unit 1 and here also of the combustion air guide dome 3 .
- the shape of the recesses 4 is thus constant in the axial direction and the recesses 4 extend parallel to one another.
- the recesses 4 furthermore have a common height, that is, a common, i.e., equal, axial extent.
- the combustion air guide dome 4 is a cylinder having a circular base area.
- the fuel enters the combustion space 2 via a fuel inlet 5 .
- FIG. 2 shows a section taken through the combustion air guide dome 3 along the longitudinal axis 6 .
- the recesses 4 can be seen, which extend from the inside 30 to the outside 31 and become narrower from the inside to the outside. The width of the recesses 4 is thus greater on the inside 30 than on the outside 31 . This results in the effect of a nozzle.
Abstract
Example embodiments relate to a burner unit for combusting an air-fuel mixture. The burner unit includes an air supply dome having recesses which have a larger width on an inside of the air supply dome than on an outside.
Description
- The present disclosure relates to a burner unit for combusting an air-fuel mixture.
- The burner unit is, for example, part of a heater for heating air or a liquid, e.g. water. The fuel is, for example, diesel, gasoline or a combustible gas (e.g. propane).
- DE 295 11 384 U1 describes a burner unit having an outer tube and an inner tube. The inner tube is located within the outer tube and allows combustion air to be supplied via slots. The fuel is introduced into the outer tube. The resultant mixture of air and fuel is combusted in a flame tube. The structure of a combustion chamber is further taught in DE 633 304, DE 44 42 425 B4, DE 44 47 986 B4, DE 195 29 994 A1 or DE 10 2013 109 184 A1.
- For combustion to be as complete and as low in pollutants as possible, it is required that the air and fuel be mixed as well as possible.
- It is therefore the object of the invention to propose a burner unit which allows the air-fuel mixture to be combusted as well as possible.
- The present disclosure achieves the object by a burner unit for combusting an air-fuel mixture, having a combustion space, a combustion air guide dome and a fuel inlet, wherein the combustion air guide dome is located in the combustion space and has recesses, wherein the fuel inlet opens into the combustion space, and wherein the recesses have a larger width on an inside of the combustion air guide dome than on an outside of the air supply dome.
- The recesses in the combustion dome, through which the (combustion) air passes from the interior of the dome into the combustion space, do not have a constant width but narrow from the inside to the outside. The view in each case here is in a plane perpendicular to a longitudinal axis of the dome and/or the burner unit. The dome may alternatively also be referred to as an inner tube or inner cylinder. Furthermore, the fuel, that is, e.g. diesel, enters the combustion space via a fuel inlet. It has been found that the narrowing of the recesses improves mixing. This results, for example, in a more homogeneous velocity distribution in the combustion space. Furthermore, pressure losses can be avoided, for example.
- The recesses are, for example, in the form of slots along the longitudinal axis. The air enters the interior of the dome via a fan, for example, and from there into the combustion space around the air supply dome. In one configuration, the burner unit is part of a heating system.
- One configuration consists in that the recesses taper from the inside to the outside. For example, the side walls of the recesses have an even profile with a constant slope.
- One configuration provides that the recesses are configured such that they produce a nozzle effect for air directed out of the combustion air guide dome.
- One configuration consists in that the recesses have a substantially constant profile along a longitudinal axis of the air supply dome. For example, the recesses are axially oriented slots. An alternative configuration provides that the recesses change their shape along a longitudinal axis of the air supply dome. The combustion air guide dome may be closed or open on the face side.
- In particular, the longitudinal axis of the combustion air guide dome is perpendicular to the direction in which the recesses become narrower from the inside to the outside.
- One configuration consists in that the combustion air guide dome has a substantially circular cylindrical shape. The combustion air guide dome may be closed or open on the face side.
- One configuration provides that the recesses have different heights along a longitudinal axis of the air supply dome. In this configuration, the recesses have different lengths or extents in the axial direction. An alternative configuration consists in that the recesses have a common height along a longitudinal axis of the air supply dome. In this configuration, the recesses have a common or equal axial extent along the longitudinal axis.
- In detail, there is a multitude of options for configuring and further developing the burner unit according to the invention. In this regard, reference is made, for one thing, to the claims dependent on
claim 1 and, for another thing, to the following description of exemplary embodiments in conjunction with the drawings, in which: -
FIG. 1 shows a section taken through a schematic representation of the burner unit along the longitudinal axis; and -
FIG. 2 shows a section taken through the burner unit perpendicular to the longitudinal axis. -
FIG. 1 schematically shows aburner unit 1, which is for example part of a heating system. A mixture of a fuel, e.g. gas or diesel, and combustion air is combusted in theburner space 2. Good mixing is required for a combustion which is as effective as possible and which also produces as few pollutants as possible. The combustion air enters thecombustion space 2 via therecesses 4 in the combustionair guide dome 3. Therecesses 4 are in the form of slots here, which originate from the inner face side of the combustionair guide dome 3 and extend along thelongitudinal axis 6 of theburner unit 1 and here also of the combustionair guide dome 3. The shape of therecesses 4 is thus constant in the axial direction and therecesses 4 extend parallel to one another. In the configuration shown, therecesses 4 furthermore have a common height, that is, a common, i.e., equal, axial extent. The combustionair guide dome 4 is a cylinder having a circular base area. The fuel enters thecombustion space 2 via a fuel inlet 5. -
FIG. 2 shows a section taken through the combustionair guide dome 3 along thelongitudinal axis 6. Therecesses 4 can be seen, which extend from theinside 30 to the outside 31 and become narrower from the inside to the outside. The width of therecesses 4 is thus greater on theinside 30 than on the outside 31. This results in the effect of a nozzle. -
-
- 1 burner unit
- 2 combustion space
- 3 combustion air guide dome
- 4 recess
- 5 fuel inlet
- 6 longitudinal axis of combustion air guide dome
- 30 inside of combustion air guide dome
- 31 outside of combustion air guide dome
Claims (6)
1. A burner unit for combusting an air-fuel mixture,
comprising a combustion space, a combustion air guide dome and a fuel inlet,
wherein the combustion air guide dome is located in the combustion space and has recesses,
wherein the fuel inlet opens into the combustion space, and
wherein the recesses have a larger width on an inside of the combustion air guide dome than on an outside of the combustion air guide dome.
2. The burner unit according to claim 1 , wherein the recesses taper from the inside to the outside.
3. The burner unit according to claim 1 , wherein the recesses are configured such that they produce a nozzle effect for air directed out of the combustion air guide dome.
4. The burner unit according to claim 1 , wherein the recesses have a constant profile along a longitudinal axis of the combustion air guide dome-dome.
5. The burner unit according to claim 1 , wherein the combustion air guide dome has a circular cylindrical shape.
6. The burner unit according to claim 1 , wherein the recesses have a common height along a longitudinal axis of the combustion air guide dome.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020007182.1 | 2020-11-24 | ||
DE102020007182.1A DE102020007182A1 (en) | 2020-11-24 | 2020-11-24 | burner unit |
PCT/EP2021/000106 WO2022111843A1 (en) | 2020-11-24 | 2021-09-13 | Burner unit |
Publications (1)
Publication Number | Publication Date |
---|---|
US20230400183A1 true US20230400183A1 (en) | 2023-12-14 |
Family
ID=77910733
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/033,175 Pending US20230400183A1 (en) | 2020-11-24 | 2021-09-13 | Burner unit |
Country Status (6)
Country | Link |
---|---|
US (1) | US20230400183A1 (en) |
EP (1) | EP4251924A1 (en) |
CN (1) | CN116529530A (en) |
AU (1) | AU2021387639A1 (en) |
DE (1) | DE102020007182A1 (en) |
WO (1) | WO2022111843A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE633304C (en) | 1934-07-20 | 1936-07-24 | Gasaccumulator Svenska Ab | Burner for gas or vapor fuel |
DE4442425B4 (en) | 1994-05-13 | 2004-09-16 | J. Eberspächer GmbH & Co. KG | Combustion chamber of a burner for a vehicle heater or for an exhaust gas particle filter |
DE4447986B4 (en) | 1994-05-13 | 2006-03-16 | J. Eberspächer Gmbh & Co. | Burner combustion chamber for vehicle heater or exhaust particle filter - has endface limiting wall, circumferential limiting wall, glow plug connector and possibly combustion air induction connector all cast as one item |
DE19529994C2 (en) | 1994-11-10 | 2003-06-26 | Eberspaecher J Gmbh & Co | Evaporator burner for a heater |
DE29511384U1 (en) | 1995-07-14 | 1995-10-12 | Eberspaecher J | Evaporation combustion chamber for a heater operated with liquid fuel |
DE102013109184B4 (en) | 2013-08-23 | 2018-07-12 | Webasto SE | Combustion air supply of a mobile heater |
DE102015112932A1 (en) * | 2015-08-06 | 2017-02-09 | Eberspächer Climate Control Systems GmbH & Co. KG | mixing arrangement |
-
2020
- 2020-11-24 DE DE102020007182.1A patent/DE102020007182A1/en active Pending
-
2021
- 2021-09-13 CN CN202180078411.0A patent/CN116529530A/en active Pending
- 2021-09-13 EP EP21777196.3A patent/EP4251924A1/en active Pending
- 2021-09-13 WO PCT/EP2021/000106 patent/WO2022111843A1/en active Application Filing
- 2021-09-13 AU AU2021387639A patent/AU2021387639A1/en active Pending
- 2021-09-13 US US18/033,175 patent/US20230400183A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CN116529530A (en) | 2023-08-01 |
AU2021387639A1 (en) | 2023-05-11 |
EP4251924A1 (en) | 2023-10-04 |
DE102020007182A1 (en) | 2022-05-25 |
WO2022111843A1 (en) | 2022-06-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: TRUMA GERAETETECHNIK GMBH & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NAZARIMANESH, MEYSAM;REEL/FRAME:063401/0403 Effective date: 20230412 |
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STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |