US20090075220A1 - Combustion Apparatus for Operation With a Liquid Fuel - Google Patents

Combustion Apparatus for Operation With a Liquid Fuel Download PDF

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Publication number
US20090075220A1
US20090075220A1 US11/990,319 US99031906A US2009075220A1 US 20090075220 A1 US20090075220 A1 US 20090075220A1 US 99031906 A US99031906 A US 99031906A US 2009075220 A1 US2009075220 A1 US 2009075220A1
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US
United States
Prior art keywords
combustion apparatus
fuel
fuel tray
evaporator device
evaporator
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.)
Abandoned
Application number
US11/990,319
Inventor
Elmar Stumpf
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Assigned to BSH BOSCH UND SIEMENS HAUSGERATE GMBH reassignment BSH BOSCH UND SIEMENS HAUSGERATE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: STUMPF, ELMAR
Publication of US20090075220A1 publication Critical patent/US20090075220A1/en
Abandoned legal-status Critical Current

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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
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/443—Vaporising devices incorporated with burners heated by the main burner flame
    • 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 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99009—Combustion process using vegetable derived fuels, e.g. from rapes

Definitions

  • the present invention relates to a combustion apparatus for operation with a fuel that is liquid at room temperature as claimed in the preamble of claim 1 .
  • the publication DE 101 61 154 A1 proposes a burner for a cooker that is operated with liquid fuel.
  • Said burner can preferably be operated with a vegetable oil.
  • the liquid fuel is introduced into a container of the burner. Pressure is used to pump the fuel by way of a supply tube from the inside of the container to an oil inlet opening of an evaporator. There the liquid fuel changes to its gaseous phase.
  • the fuel gas heated by way of the evaporator flows out of a nozzle of the evaporator as a stream of fuel and is ignited. The resulting flame causes heat to be transferred to a vessel held over it.
  • the object of the present invention is to find a simple and safe way of preheating an evaporator system that can be operated with a liquid fuel.
  • the fuel tray serves to hold and burn a material that can be easily ignited, it being possible for the fuel tray to have an opening at its base and it being possible to attach an evaporator system in/at the opening to evaporate a fuel that is liquid at room temperature and to supply fuel to the evaporator system through the opening.
  • the evaporator can be configured to evaporate a vegetable oil.
  • the inventive vessel system ensures adequate preheating of the evaporator within 30 seconds for example.
  • the fact that the fuel tray is firmly secured to the evaporator means that there is no risk of the fuel tray tipping over with the open flame.
  • the invention also allows the fuel tray with the flame to be attached in a simple manner to the evaporator so that the evaporator is heated evenly.
  • the fuel tray can optimally have a central through opening for the evaporator tube.
  • the fuel tray and evaporator system can be configured in one piece.
  • the fuel tray can also have a heat-insulating coating. This prevents burning injuries if the heated fuel tray is touched.
  • the fuel tray can also have a discharge component to drain the easily ignitable material. This is advantageous, if the user has already introduced the easily ignitable material into the fuel tray but then does not want to start the combustion process. Likewise oil residues from the fuel tray can be caught in the fuel tray when the evaporator is disassembled and then be drained off by way of the discharge component.
  • the combustion apparatus can also have a tripod as the burner base.
  • the burner base can also have a protective cylinder to protect a threaded coupling below the fuel tray from contamination.
  • the fuel tray can rest on the protective cylinder, thereby increasing its stability.
  • a supply system can advantageously be arranged in a hollow space in the burner base to supply fuel from a container system to an evaporation system. This is ensured for example by a supply line space for the oil supply line to the evaporator tube inside the burner base. This reduces the risk of damage to the oil supply line due to the heat resulting during operation of the burner.
  • the burner base can have an operating system to control the oil supply to the combustion apparatus.
  • FIG. 1 shows an evaporator with a fuel tray
  • FIG. 2 shows a threaded section for screwing an evaporator with a fuel tray onto a burner base
  • FIG. 3 shows a burner base
  • the inventive burner in FIG. 1 has an evaporator 1 with an ignition tray or fuel tray 2 .
  • the evaporator 1 here is configured in one piece with the ignition tray 2 from a non-combustible and heat-resistant material.
  • the evaporator 1 consists of two tubular sections 3 and 4 , configured in the form of a double loop.
  • the tubular sections 3 and 4 pass into each other at their ends.
  • the evaporator 1 has a nozzle 5 at this point.
  • the other ends of the tubular sections 3 and 4 are connected to a supply tube 6 .
  • the evaporator 1 also comprises a baffle device 7 .
  • the tube sections 3 , 4 are connected to a connector pedestal or supply tube 6 .
  • the connector pedestal 6 or supply tube 6 is arranged in the center of the ignition tray 2 .
  • the fuel tray 2 is required to start operation of the combustion apparatus or vegetable oil cooker.
  • a flammable liquid for example kerosene, petrol, diesel oil or vegetable oil ester is ignited in the ignition tray 2 .
  • This preheats the supply tube 6 and the two tubular sections 3 and 4 of the evaporator.
  • the liquid vegetable oil in the supply tube 6 and the tubular sections 3 , 4 is evaporated and flows in gaseous form out of the nozzle 5 .
  • the gas leaving the nozzle 5 is then ignited manually.
  • a baffle device 7 is provided. This causes the stream of gas to eddy and mix with the ambient air to form a combustible air/gas mixture.
  • the combustion process described here operates continuously. The combustion process only comes to a halt if the vegetable oil supply is interrupted.
  • FIG. 2 shows the underside of the evaporator 1 and part of the burner base 8 .
  • the evaporator 1 has an attachment opening or connector 9 on its underside.
  • a matching threaded section 10 is attached in the center of the burner base 8 . By screwing the threaded section 10 in the attachment opening 9 it is possible to attach the evaporator 1 to the burner base 8 .
  • the threaded section 10 has a supply opening 11 , by way of which it is possible to apply pressure to introduce the vegetable oil into the inside of the supply tube 6 of the evaporator 1 .
  • FIG. 3 shows the complete burner base. It has a tripod 12 .
  • the mass of the tripod 12 is distributed in such a manner that the burner does not tip over when deflected slightly from its center of gravity.
  • a further device for improving safety during operation of the burner is a pot support 13 , which is connected to the tripod 12 in one piece.
  • the pot support allows a pot to be placed over the flame of the burner in a simple manner.
  • the burner base 8 also has an operating knob 14 to actuate a regulating valve.
  • the regulating valve which is used to control the supply of vegetable oil, is located in an internal hollow space in the tripod 12 together with an oil supply line.
  • the burner base 8 also has a protective cylinder 15 , which serves to protect the threaded section 10 from contamination. It is possible to attach the protective cylinder 15 to the tripod 12 by screwing the evaporator 1 and ignition tray 2 tightly onto the threaded section 10 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spray-Type Burners (AREA)

Abstract

A combustion apparatus for operation with a fuel which is liquid at room temperature, in particular with a vegetable oil, wherein the combustion apparatus includes an evaporator device for evaporating the liquid fuel and a nozzle for ejection and for flame ignition of the evaporated fuel. The evaporator device is disposed in fluid communication with a fuel tray for preheating the evaporator device for a start of operation.

Description

  • The present invention relates to a combustion apparatus for operation with a fuel that is liquid at room temperature as claimed in the preamble of claim 1.
  • The publication DE 101 61 154 A1 proposes a burner for a cooker that is operated with liquid fuel. Said burner can preferably be operated with a vegetable oil. To produce a flame, the liquid fuel is introduced into a container of the burner. Pressure is used to pump the fuel by way of a supply tube from the inside of the container to an oil inlet opening of an evaporator. There the liquid fuel changes to its gaseous phase. The fuel gas heated by way of the evaporator flows out of a nozzle of the evaporator as a stream of fuel and is ignited. The resulting flame causes heat to be transferred to a vessel held over it. In order to operate the burner with vegetable oil as the fuel, it is necessary beforehand to heat the vegetable oil to a temperature at which is changes to the gaseous state and can therefore be easily ignited. Before a combustion process it is therefore necessary to heat the evaporator of the burner to the corresponding temperature. The publication DE 101 61 154 A1 proposes an open flame below the evaporator for this purpose.
  • The object of the present invention is to find a simple and safe way of preheating an evaporator system that can be operated with a liquid fuel.
  • The object is achieved by a combustion apparatus with the features of claim 1. Developments of the combustion apparatuses are set out in the subclaims.
  • The fuel tray serves to hold and burn a material that can be easily ignited, it being possible for the fuel tray to have an opening at its base and it being possible to attach an evaporator system in/at the opening to evaporate a fuel that is liquid at room temperature and to supply fuel to the evaporator system through the opening. In particular the evaporator can be configured to evaporate a vegetable oil.
  • The inventive vessel system ensures adequate preheating of the evaporator within 30 seconds for example. The fact that the fuel tray is firmly secured to the evaporator means that there is no risk of the fuel tray tipping over with the open flame. The invention also allows the fuel tray with the flame to be attached in a simple manner to the evaporator so that the evaporator is heated evenly. The fuel tray can optimally have a central through opening for the evaporator tube.
  • The fuel tray and evaporator system can be configured in one piece. The fuel tray can also have a heat-insulating coating. This prevents burning injuries if the heated fuel tray is touched.
  • The fuel tray can also have a discharge component to drain the easily ignitable material. This is advantageous, if the user has already introduced the easily ignitable material into the fuel tray but then does not want to start the combustion process. Likewise oil residues from the fuel tray can be caught in the fuel tray when the evaporator is disassembled and then be drained off by way of the discharge component.
  • The combustion apparatus can also have a tripod as the burner base.
  • The burner base can also have a protective cylinder to protect a threaded coupling below the fuel tray from contamination. In this instance the fuel tray can rest on the protective cylinder, thereby increasing its stability.
  • It shall preferably be possible to attach a pot holder to the burner base or configure it in one piece with the burner base. This allows simple and safe use of a pot during the cooking process.
  • A supply system can advantageously be arranged in a hollow space in the burner base to supply fuel from a container system to an evaporation system. This is ensured for example by a supply line space for the oil supply line to the evaporator tube inside the burner base. This reduces the risk of damage to the oil supply line due to the heat resulting during operation of the burner. Similarly the burner base can have an operating system to control the oil supply to the combustion apparatus.
  • The present invention is described in more detail below with reference to the accompanying drawings, in which:
  • FIG. 1 shows an evaporator with a fuel tray;
  • FIG. 2 shows a threaded section for screwing an evaporator with a fuel tray onto a burner base; and
  • FIG. 3 shows a burner base.
    •
  • The inventive burner in FIG. 1 has an evaporator 1 with an ignition tray or fuel tray 2. The evaporator 1 here is configured in one piece with the ignition tray 2 from a non-combustible and heat-resistant material. In the example in FIG. 1 the evaporator 1 consists of two tubular sections 3 and 4, configured in the form of a double loop. The tubular sections 3 and 4 pass into each other at their ends. The evaporator 1 has a nozzle 5 at this point. The other ends of the tubular sections 3 and 4 are connected to a supply tube 6. The evaporator 1 also comprises a baffle device 7. The tube sections 3, 4 are connected to a connector pedestal or supply tube 6. The connector pedestal 6 or supply tube 6 is arranged in the center of the ignition tray 2.
  • The fuel tray 2 is required to start operation of the combustion apparatus or vegetable oil cooker. To start operation of the vegetable oil cooker, a flammable liquid, for example kerosene, petrol, diesel oil or vegetable oil ester is ignited in the ignition tray 2. This preheats the supply tube 6 and the two tubular sections 3 and 4 of the evaporator. The liquid vegetable oil in the supply tube 6 and the tubular sections 3, 4 is evaporated and flows in gaseous form out of the nozzle 5. The gas leaving the nozzle 5 is then ignited manually.
  • To increase the time the gas leaving the nozzle 5 remains above the nozzle 5, a baffle device 7 is provided. This causes the stream of gas to eddy and mix with the ambient air to form a combustible air/gas mixture. The combustion process described here operates continuously. The combustion process only comes to a halt if the vegetable oil supply is interrupted.
  • FIG. 2 shows the underside of the evaporator 1 and part of the burner base 8. It can be seen that the evaporator 1 has an attachment opening or connector 9 on its underside. A matching threaded section 10 is attached in the center of the burner base 8. By screwing the threaded section 10 in the attachment opening 9 it is possible to attach the evaporator 1 to the burner base 8. The threaded section 10 has a supply opening 11, by way of which it is possible to apply pressure to introduce the vegetable oil into the inside of the supply tube 6 of the evaporator 1.
  • FIG. 3 shows the complete burner base. It has a tripod 12. The mass of the tripod 12 is distributed in such a manner that the burner does not tip over when deflected slightly from its center of gravity. A further device for improving safety during operation of the burner is a pot support 13, which is connected to the tripod 12 in one piece. The pot support allows a pot to be placed over the flame of the burner in a simple manner. The burner base 8 also has an operating knob 14 to actuate a regulating valve. The regulating valve, which is used to control the supply of vegetable oil, is located in an internal hollow space in the tripod 12 together with an oil supply line.
  • The burner base 8 also has a protective cylinder 15, which serves to protect the threaded section 10 from contamination. It is possible to attach the protective cylinder 15 to the tripod 12 by screwing the evaporator 1 and ignition tray 2 tightly onto the threaded section 10.

Claims (14)

1-13. (canceled)
14. A combustion apparatus for operation with a fuel that is liquid at room temperature, in particular with a vegetable oil, the combustion apparatus comprising an evaporator device for evaporating the liquid fuel; a nozzle in fluid communication with the evaporator device for expelling and igniting the evaporated fuel; and a fuel tray in fluid communication with the evaporator device for preheating the evaporator device to start operation.
15. The combustion apparatus according to claim 14 wherein the evaporator device is disposed at least partially within the fuel tray.
16. The combustion apparatus according to claim 14 wherein the evaporator device is formed with at least one evaporator tube.
17. The combustion apparatus according to claim 15 wherein the fuel tray extends in at least a partially surrounding relationship with the evaporator device.
18. The combustion apparatus according to claim 15 wherein the fuel tray includes a base portion and the evaporator device is attached to the base portion of the fuel tray.
19. The combustion apparatus according to claim 15 wherein the evaporator device is disposed generally in the center of the fuel tray.
20. The combustion apparatus according to claim 15 wherein the fuel tray is formed with a connector pedestal and the evaporator device is connected to the connector pedestal.
21. The combustion apparatus according to claim 20 wherein the fuel tray includes a base portion and the connector pedestal is disposed in the base portion of the fuel tray.
22. The combustion apparatus according to claim claims 20 wherein the connector pedestal includes a connector for connection to a fuel supply line.
23. The combustion apparatus according to claim 22 and further comprising a protective plate disposed below the fuel tray for protecting the connector from contamination.
24. The combustion apparatus according to claim 23 wherein the protective plate is disposed between the fuel tray and a burner base.
25. The combustion apparatus according to claim 23 wherein the protective plate is disposed adjacent a substantially closed assembly space below the fuel tray.
26. The combustion apparatus according to claim 25 wherein the connector of the connector pedestal is disposed within the assembly space below the fuel tray.
US11/990,319 2005-08-08 2006-07-13 Combustion Apparatus for Operation With a Liquid Fuel Abandoned US20090075220A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10-2005-037.362.3 2005-08-08
DE102005037362A DE102005037362A1 (en) 2005-08-08 2005-08-08 Firing device for operation with a liquid fuel
PCT/EP2006/064221 WO2007017338A1 (en) 2005-08-08 2006-07-13 Combustion apparatus for operation with a liquid fuel

Publications (1)

Publication Number Publication Date
US20090075220A1 true US20090075220A1 (en) 2009-03-19

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US11/990,319 Abandoned US20090075220A1 (en) 2005-08-08 2006-07-13 Combustion Apparatus for Operation With a Liquid Fuel

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US (1) US20090075220A1 (en)
EP (1) EP1915572A1 (en)
CN (1) CN101238331A (en)
BR (1) BRPI0614594A2 (en)
DE (1) DE102005037362A1 (en)
WO (1) WO2007017338A1 (en)
ZA (1) ZA200801125B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008042481A1 (en) * 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH cooker
WO2011092633A2 (en) * 2010-01-26 2011-08-04 Kganyisitse Industries (Proprietary) Limited A fuel burning apparatus

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US427946A (en) * 1890-05-13 Hydrocarbon-burner
US427819A (en) * 1890-05-13 Hydrocarbon-burner
US476694A (en) * 1892-06-07 smith
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US49955A (en) * 1865-09-12 Improvement in vapor-burners
US641778A (en) * 1897-09-30 1900-01-23 Raymond Button Company Button and button-fastener.
US790078A (en) * 1903-12-18 1905-05-16 Silas S Sprague Vaporizer and burner.
US1050170A (en) * 1911-09-28 1913-01-14 Bert F Rawlings Oil-burner.
US1044722A (en) * 1912-04-24 1912-11-19 John B Wood Oil-burner.
US1094088A (en) * 1912-11-22 1914-04-21 Harry Offenbach Vapor-burner.
US1069091A (en) * 1913-02-04 1913-07-29 John J Mann Oil-burner.
US1183366A (en) * 1915-08-13 1916-05-16 Oliver H Franklin Hydrocarbon-burner.
US1198311A (en) * 1916-02-08 1916-09-12 John Garner Backstrom Car-fender.
US1290757A (en) * 1918-06-12 1919-01-07 Samuel M Kekuewa Hydrocarbon-burner.
US1295381A (en) * 1918-07-25 1919-02-25 Hendrik Stapper Liquid-fuel burner.
US1340803A (en) * 1918-12-18 1920-05-18 Earl H Tate Liquid-fuel burner
US1391280A (en) * 1920-11-08 1921-09-20 Noble W Sheldon Gasifying device
US1433999A (en) * 1921-07-15 1922-10-31 Mayer & Garrison Torch
US1503850A (en) * 1923-05-15 1924-08-05 Rockefeller William Oil burner
US1505848A (en) * 1923-12-29 1924-08-19 Bartel Jacob Vapor oil burner
US1613060A (en) * 1924-05-22 1927-01-04 Charles R Smith Hydrocarbon burner
US1639518A (en) * 1925-07-30 1927-08-16 Sherman G Long Burner
US1887855A (en) * 1926-05-11 1932-11-15 Wall Mfg Company P Furnace
US1874781A (en) * 1930-05-27 1932-08-30 William C Mckesson Oil burner
US2206949A (en) * 1936-02-18 1940-07-09 Mantle Lamp Company Pressure lamp or stove
US2402138A (en) * 1944-02-18 1946-06-18 Hebard Hugh Charles Liquid fuel burner of the pressure type
US2928386A (en) * 1957-03-22 1960-03-15 Little Inc A Portable cooking stove
US3405703A (en) * 1965-10-25 1968-10-15 Bahco Ab Portable stove
US3749077A (en) * 1971-10-26 1973-07-31 Noni Corp Vapor generator
US3809054A (en) * 1972-12-11 1974-05-07 Olin Corp Collapsible camp stove
US4131414A (en) * 1977-05-11 1978-12-26 The Coleman Company, Inc. Lantern with kerosene preheater
US4696638A (en) * 1986-07-07 1987-09-29 Denherder Marvin J Oil fuel combustion
US4881520A (en) * 1986-11-14 1989-11-21 The Coleman Company, Inc. Propane-fueled cooking apparatus
US4788962A (en) * 1987-10-05 1988-12-06 Mashburn James S Cantilevered gas barbecue
US4791538A (en) * 1988-01-22 1988-12-13 Prest John D Tripod lantern stand
US5425354A (en) * 1993-12-23 1995-06-20 Tong Yang Magic Corp. Portable gas range with folding tripod
US5588823A (en) * 1995-11-13 1996-12-31 Wu; Jung-Wuan Alcohol lamp
US6182651B1 (en) * 1997-07-14 2001-02-06 Primus Ab Open air stove
US20070099139A1 (en) * 2003-09-16 2007-05-03 Bsh Bosch Und Siemens Hausgerate Gmbh Gas burner for liquid fuels
USD512264S1 (en) * 2004-03-25 2005-12-06 The Erinkrann Corporation Portable stove
US20090123884A1 (en) * 2005-08-08 2009-05-14 Bsh Bosch Und Diemens Hausgerate Gmbh Burner Device

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WO2007017338A1 (en) 2007-02-15
EP1915572A1 (en) 2008-04-30
ZA200801125B (en) 2008-10-29
CN101238331A (en) 2008-08-06
DE102005037362A1 (en) 2007-02-15
BRPI0614594A2 (en) 2011-04-05

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