EP0918193A2 - Dispositif de chauffage avec brûleur pourvu d' une buse double de vaporisation - Google Patents

Dispositif de chauffage avec brûleur pourvu d' une buse double de vaporisation Download PDF

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Publication number
EP0918193A2
EP0918193A2 EP98122213A EP98122213A EP0918193A2 EP 0918193 A2 EP0918193 A2 EP 0918193A2 EP 98122213 A EP98122213 A EP 98122213A EP 98122213 A EP98122213 A EP 98122213A EP 0918193 A2 EP0918193 A2 EP 0918193A2
Authority
EP
European Patent Office
Prior art keywords
stage
air
compressor
partial flow
combustion chamber
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
Application number
EP98122213A
Other languages
German (de)
English (en)
Other versions
EP0918193B1 (fr
EP0918193A3 (fr
Inventor
Ingrid Dr. Lanzl
Christian Hubbauer
Stefan Ullerich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Webasto Thermosysteme GmbH
Original Assignee
Webasto Thermosysteme GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Webasto Thermosysteme GmbH filed Critical Webasto Thermosysteme GmbH
Publication of EP0918193A2 publication Critical patent/EP0918193A2/fr
Publication of EP0918193A3 publication Critical patent/EP0918193A3/fr
Application granted granted Critical
Publication of EP0918193B1 publication Critical patent/EP0918193B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/008—Flow control devices
    • 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
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers

Definitions

  • the invention relates to a heater, in particular a motor-operated one Vehicle heater, with a burner, via a two-substance nozzle with fuel and air is supplied and comprises a combustion chamber, and with a multi-stage compressor for Compressing the air.
  • Two-component nozzles usually have a bore and a concentric arrangement Annular chamber, with either the bore or the annular chamber using a fuel Dosing pump supplied and atomized by the air mass flow, which over the others Nozzle passage opening, the ring channel or the bore is supplied.
  • the invention is based on the object To create a heater of the type mentioned in the preamble of the claim, which is inexpensive, is quiet and safe to operate.
  • the invention provides an air duct of a two-substance nozzle having burner in connection with a multi-stage compressor, in which a first stage, the total air mass flow required for the combustion lower pressure level is compressed. whereupon this air mass flow is divided, and wherein a partial flow of the combustion chamber directly and the other partial flow after one additional compression as atomizing air mass flow fed to the two-fluid nozzle becomes.
  • the air routing of the burner according to the invention enables adaptation of the Atomizing airflow to the respective nozzle requirements, without this for the Combustion required air quantity is affected.
  • Air mass flow is raised to a high pressure level, but only that part is the air mass flow that is used to atomize the fuel in the two-substance nozzle less energy is required than in the prior art mentioned above. This ensures a higher start security. It also stands out heater according to the invention by the special air flow compared to the The aforementioned prior art, which requires a compressor by a low cost price as well as freedom from maintenance over the life of the engine away from. In contrast to the volumetric compression in the prior art in a compressor, the operation of which is associated with high noise, stands out the air duct according to the invention from a low noise.
  • the multi-stage compressor is preferably a multi-stage blower, for example an appropriately designed ring duct blower.
  • Two-component nozzle 2 of the burner which projects into the combustion chamber 1, and a two-stage Compressor in the form of a blower with a first blower stage 3 and a second Fan level 4 shown.
  • the first fan stage 3 is supplied with the entire air mass flow m o required for combustion in the combustion chamber 1, as shown schematically by an air supply line 5.
  • the air mass flow is compressed to a first relatively low pressure level, and this compressed air mass flow is divided into two partial flows following the output 6 of the first blower stage 3, of which a secondary air partial flow m 2 via a line 7 of the combustion chamber 1 directly, that is, without being fed via the two-component nozzle 2.
  • the line 7 is connected to an inlet 8 of the combustion chamber in the region of the two-component nozzle 2.
  • a primary air partial flow m 1 of the air mass flow m o compressed or precompressed in the first blower stage 3 is supplied to the second blower stage 4 via a line 9.
  • the second blower stage 4 serves to recompress the primary air partial flow m 1 to a higher pressure level p 1 than the pressure level p 2 of the secondary partial flow m 2, which is fed directly into the combustion chamber 1.
  • the post-compressed primary air partial flow m 1 present at the outlet 10 of the second blower stage 4 is fed via a line 11 to an atomization connection 12 of the two-component nozzle 2.
  • the atomization connection 12 opens into an annular channel 13 of the two-component nozzle 2, which concentrically surrounds a nozzle bore 14 which is connected to a fuel feed line 15.
  • bypass or bypass line 16 is provided, which is dashed in the figure shown and is connected in parallel to the second blower stage 4, and thus optionally the line 9 connected to the input of the second blower stage 4 to line 11 on Output 10 of the second fan stage connects.
  • a control valve 17 in the Bypass line 16 the proportion of the highly compressed primary air can each Operating conditions are adjusted. In particular, there is a reduction in the Start phase realizable.
  • the bypass line 16 can also be replaced by a Control valve 18 at the junction of line 9 from line 7, so that there the share can be changed within certain limits from primary to secondary air.
  • the first and second blower stages 3 and 4 are preferably on a common one Motor shaft arranged and are driven at the same speed.
  • the proportional Distribution of the pre-compressed leaving the first blower stage 3 or to a first one low pressure level compressed air mass flow into the two partial flows takes place via a corresponding dimensioning of the two blower stages 3 and 4 or Dimensioning of the two-component nozzle 2 and, if necessary, using the bypass line 16 or the control valves 17 or 18.
  • the inventive shown in the figure Air supply to the burner of the heater according to the invention allows adaptation of the Atomizing airflow to the respective nozzle requirements without influencing the the total amount of air needed for combustion. Another advantage is that the air duct according to the invention requires low energy consumption. A Maintenance is during the lifespan of the motor for driving the two blower stages 3 and 4 not required.
  • the split two-stage compression of the total air mass flow leads to a lower noise than with previous ones Burners.
  • an air mass flow m 0 of approximately 9.5 m 3 / h is compressed to a pressure p 2 of approximately 18 hPa above atmospheric pressure p 0 in the first blower stage 3 at full load.
  • a partial flow m 2 of approximately 8 to 9 m 3 / h is fed via line 7 directly to the combustion chamber 1 as secondary air.
  • the smaller partial flow m 1 of approximately 0.5 to 1.5 m 3 / h is further compressed in the second blower stage 4 to a pressure p 1 of approximately 70 to 100 hPa and is supplied via the atomizing connection 12 as the primary or atomizing compressed air Two-component nozzle 2 supplied.
  • the ratio of primary to secondary air is thus between 0.05 and 0.20, preferably 0.08 to 0.12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
  • Air Supply (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP98122213A 1997-11-26 1998-11-23 Dispositif de chauffage avec brûleur pourvu d' une buse double de vaporisation Expired - Lifetime EP0918193B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19752293 1997-11-26
DE19752293A DE19752293C1 (de) 1997-11-26 1997-11-26 Heizgerät mit einem eine Zweistoffdüse aufweisenden Brenner

Publications (3)

Publication Number Publication Date
EP0918193A2 true EP0918193A2 (fr) 1999-05-26
EP0918193A3 EP0918193A3 (fr) 2000-01-19
EP0918193B1 EP0918193B1 (fr) 2003-05-21

Family

ID=7849821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122213A Expired - Lifetime EP0918193B1 (fr) 1997-11-26 1998-11-23 Dispositif de chauffage avec brûleur pourvu d' une buse double de vaporisation

Country Status (4)

Country Link
US (1) US5993191A (fr)
EP (1) EP0918193B1 (fr)
JP (1) JPH11287407A (fr)
DE (2) DE19752293C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812561C5 (de) * 1998-03-21 2006-02-16 J. Eberspächer GmbH & Co. KG Mit Flüssigbrennstoff betriebenes Heizgerät, insbesondere für Kraftfahrzeuge
US6814568B2 (en) * 2000-07-27 2004-11-09 Foster Wheeler Usa Corporation Superatmospheric combustor for combusting lean concentrations of a burnable gas
DE102008033614A1 (de) * 2008-07-17 2010-01-21 Nilfisk-Advance A/S Beheizter Hochdruckreiniger mit Brennerluft-Aufladung
DE102011119128A1 (de) 2011-11-23 2013-05-23 Thomas Magnete Gmbh Einrichtung zum Dosieren und zur Vermischung von Fluidströmen
RU2494312C1 (ru) * 2012-04-02 2013-09-27 Федеральное государственное унитарное предприятие "Государственный космический научно-производственный центр имени М.В. Хруничева" Агрегатированная горелка

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135093A1 (de) 1971-07-14 1973-02-01 Eberspaecher J Seitenkanalgeblaese in mehrflutiger ausbildung, insbesondere fuer brennstoffbetriebene heizgeraete in kraftfahrzeugen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1101790A (en) * 1911-04-13 1914-06-30 Henry L Doherty Process of burning liquid fuels.
US1829445A (en) * 1927-03-26 1931-10-27 Electricite De La Region De Va Pulverized-fuel furnace and method of operating the same
US2120387A (en) * 1933-03-14 1938-06-14 Bargeboer Adolf Device for burning atomized liquid fuel
GB1318178A (en) * 1971-01-14 1973-05-23 Baier W Baier W Schober Land S High power heating devices using liquid heat transfer media
DE2110182A1 (de) * 1971-03-03 1972-09-21 Fa. J. Eberspächer, 7300 Esslingen Zusatzheizung für ein Kraftfahrzeug mit wassergekühltem Motor
JPS5288940A (en) * 1976-01-19 1977-07-26 Hitachi Ltd Preheating room heater for vehicle
CH613761A5 (fr) * 1976-04-16 1979-10-15 Colmant Cuvelier
JPS55117039A (en) * 1979-01-22 1980-09-09 Garrett Corp Fuel atomizing mechanism for gas turbine
CA1282315C (fr) * 1985-10-10 1991-04-02 Bernhard Umlauf Appareil de chauffage alimente en carburant, pour vehicule
US5185997A (en) * 1990-01-30 1993-02-16 Hitachi, Ltd. Gas turbine system
DE4002570A1 (de) * 1990-01-30 1991-08-01 Webasto Ag Fahrzeugtechnik Brennstoffbetriebenes heizgeraet
DE19537636B4 (de) * 1995-10-10 2004-02-12 Alstom Kraftwerksanlage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135093A1 (de) 1971-07-14 1973-02-01 Eberspaecher J Seitenkanalgeblaese in mehrflutiger ausbildung, insbesondere fuer brennstoffbetriebene heizgeraete in kraftfahrzeugen

Also Published As

Publication number Publication date
EP0918193B1 (fr) 2003-05-21
DE19752293C1 (de) 1999-04-29
DE59808432D1 (de) 2003-06-26
JPH11287407A (ja) 1999-10-19
US5993191A (en) 1999-11-30
EP0918193A3 (fr) 2000-01-19

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