WO2010037668A2 - Dispositif de cuisson - Google Patents

Dispositif de cuisson Download PDF

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Publication number
WO2010037668A2
WO2010037668A2 PCT/EP2009/062246 EP2009062246W WO2010037668A2 WO 2010037668 A2 WO2010037668 A2 WO 2010037668A2 EP 2009062246 W EP2009062246 W EP 2009062246W WO 2010037668 A2 WO2010037668 A2 WO 2010037668A2
Authority
WO
WIPO (PCT)
Prior art keywords
cooking appliance
evaporator
flame guide
appliance according
flame
Prior art date
Application number
PCT/EP2009/062246
Other languages
German (de)
English (en)
Other versions
WO2010037668A3 (fr
Inventor
Hubert Giraud
Horst Kutschera
Thomas Rauch
Martin Strasser
Original Assignee
BSH Bosch und Siemens Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Publication of WO2010037668A2 publication Critical patent/WO2010037668A2/fr
Publication of WO2010037668A3 publication Critical patent/WO2010037668A3/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D5/00—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
    • F23D5/02—Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
    • F23D5/04—Pot-type evaporators, i.e. using a partially-enclosed combustion space
    • 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
    • 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
    • F23D11/40—Mixing tubes or chambers; Burner heads
    • F23D11/406—Flame stabilising means, e.g. flame holders
    • 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
    • F23D11/446—Vaporising devices incorporated with burners heated by an auxiliary flame
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C5/00—Stoves or ranges for liquid fuels
    • F24C5/02—Stoves or ranges for liquid fuels with evaporation burners, e.g. dish type
    • 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
    • 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
    • F23D2900/11401—Flame intercepting baffles forming part of burner head

Definitions

  • the present invention relates to a cooking appliance, in particular vegetable oil cooker according to the preamble of claim 1.
  • a burner for a liquid fuel operated stove preferably for a vegetable oil cooker is known.
  • the burner is provided with an evaporator, which is connected to a feed pipe for the fuel.
  • the evaporator is provided with a gas outlet channel, which is directed to a baffle device for the gas / air mixture.
  • the fuel used is primarily vegetable oil, which can be used as a fuel in camping and outdoor areas and is also available in tropical and subtropical countries.
  • vegetable oil can be used as a fuel in camping and outdoor areas and is also available in tropical and subtropical countries.
  • palm oil, coconut oil, sunflower oil, etc. come into consideration as vegetable oil.
  • the cooking appliance is designed so that as fuel petroleum, diesel oil, gasoline and vegetable oil esters come into question.
  • cooking appliances burning fuel for vegetable oil have special requirements, which are due to the physical properties of the fuel.
  • Vegetable oil evaporates only at about 220 0 C, which means that the evaporation temperature of vegetable oil over, for example, kerosene is about 165 0 C higher. Due to this higher evaporation temperature of the vegetable oil special pre-heaters for the evaporator are required.
  • the temperature in the evaporator of the cooking appliance must not be too high, otherwise the formation of deposits inside the evaporator will be promoted. Even under optimum operating conditions residues form in the evaporator, which is why a cleaning option of the evaporator for the trouble-free operation of the cooking appliance is necessary.
  • a kerosene stove is not suitable for use with vegetable oil. Rather, cooking appliances must be provided for the combustion of vegetable oil, which are suitable because of their special training, such as the geometry of the evaporator assembly.
  • the object of the present invention is, in particular, to provide a favorable cooking appliance which enables improved combustion.
  • the invention relates to a cooking appliance, in particular vegetable oil cooker, with a burner unit for generating an open flame by combustion of a liquid fuel, which has an evaporator which is surrounded by a flame guide element.
  • the flame guide serves in particular the air flow and the limitation of the flame. Due to its location, it partially defines a combustion chamber within which the fuel vapor-air mixture burns.
  • the evaporator protrude upwards and / or downwards at least partially beyond the flame guide element.
  • the advantage of such a cooking appliance is in particular that the flame-conducting element is not subjected to such high thermal stress as a result of its low overall height, so that it can be produced from a favorable material.
  • the flame guide element is arranged in a middle region of the two tubular sections of the evaporator.
  • a combustion chamber is created which allows a clean combustion.
  • clean combustion is meant a substantially residue-free combustion.
  • a further advantageous embodiment provides that a lower edge of the Flammleitelements is arranged above a nozzle for the exit of the fuel, which is provided on the evaporator. In order for a good efficiency and improved emissions are guaranteed, which in turn allows a cheap operation of the cooking appliance.
  • the flame guide element comprises at least two holders, which are provided for receiving a baffle plate.
  • the baffle plate serves the optimal Mixing of the fuel with the air in the combustion chamber.
  • the baffle plate can be attached to the flame guide with simple means.
  • the flame guide element has at least one recess through which a nozzle of the evaporator can be reached for cleaning purposes.
  • the nozzle arranged in the evaporator can be easily reached and cleaned.
  • the flame guide is supported on the evaporator.
  • the flame guide is attached to the evaporator by spot welding. This allows a particularly stable attachment.
  • the flame guide member is welded to the first tubular portion at a first point and to the second tubular portion at a second point opposite to the first. This results in a substantially tension-free attachment. Furthermore, a simple and inexpensive attachment is possible by the spot welding.
  • the flame guide element made of stainless steel with a thickness of 1 mm to 2 mm, in particular 1, 4 mm to 1, 6 mm.
  • the use of stainless steel with a specified thickness ensures on the one hand a long life and a robust design and on the other hand, a cost-effective production of the flame guide.
  • the Flammleitelement has a height of 30 mm to 50 mm, in particular from 35 mm to 45 mm.
  • a particularly optimal combustion chamber is created, which leads to a favorable consumption.
  • the distance between an upper edge of the flame guide element and an intersection point (S) is between 10 mm to 18 mm, in particular between 12 mm to 15 mm, which intersection (S) of a spherical surface (K), at least partially is formed by a baffle plate, and the flame guide is formed.
  • the geometry of the combustion chamber is improved in such a way that improved air guidance is made possible, which leads to improved combustion.
  • FIG. 1 is a cooking appliance in perspective view Fig. 2 is a burner unit of the cooking appliance in a perspective view Fig. 3 shows the cooking appliance in a side sectional view
  • FIG. 4 shows the burner unit from FIG. 2 in a first lateral sectional view
  • FIG. 5 shows a top view of the burner unit from FIG. 2
  • FIG. 6 shows the burner unit from FIG. 2 in a second lateral sectional view
  • FIG. 7 shows a bottom plate of the cooking appliance in a lateral sectional view
  • FIG. 1 shows a cooking appliance 1, which is designed to produce an open flame by burning a liquid fuel, in particular vegetable oil. It is designed for a power between 800 W to 1, 5 kW. The oil temperature to be reached should not exceed 650 ° C.
  • the cooking appliance 1 comprises a base unit 10, which serves as a receptacle of a windbreak 40.
  • the base unit 10 has a plurality of ventilation openings 14 for improved ventilation.
  • a tab 28 is provided on the base unit 10, on which a valve 29 is supported.
  • the valve 29 serves to adjust the flow rate of the fuel amount.
  • the wind shield 40 placed on the base unit 10 is a self-supporting tubular construction made of galvanized sheet metal.
  • a cleaning opening 47 is provided, which is closable by means of a cover plate 48. Through the cleaning opening 47 can be arranged inside the windshield 40 evaporator 4, in particular a nozzle provided in the evaporator for the evaporated fuel.
  • the windshield 40 has in an upper and a lower region in each case radially encircling beads 42, 43 which serve to reinforce.
  • the diameter of the windbreak is about 200 mm.
  • a gap 24 which serves to supply air from below to the flame.
  • the gap width of the air gap is about 2.5 mm.
  • the pot carrier 52 has support elements 54, 55, 56 which can be inserted in slot-shaped receivers 44, 45, 46 or in slot-shaped receivers 64, 64, 66.
  • the receptacles 44, 45, 46 have a smaller overall depth relative to the receptacles 64, 65, 66, for which reason a pot placed on the pot carrier 52 is further away from the flame, and thus the heat transfer into the cooking product is lower. Due to the adjustability is also ensured that different cooking containers are used.
  • the distance between a pot bottom (not shown) and the evaporator 4 is about 5 mm.
  • FIG. 2 shows a burner unit 2 of the cooking appliance 1 with a receiving device 1 10 in perspective view.
  • the receiving device 110 is made of sheet metal and comprises two individual preheating shells 112, 114, which are provided for receiving a second fuel for preheating the burner unit 2.
  • each of the Vorholicschalen 112, 114 at least 20 ml of a highly flammable liquid, such as alcohol or alcohol can be filled.
  • the Vorcomposingschalen 1 12, 114 are formed and attached to a feed pipe 8, that in each case a preheating is arranged just below a portion of the evaporator 4, so that the heat generated by the combustion of the second fuel heat the respective portion of the evaporator 4 maximum ,
  • a receptacle 9 is provided for this purpose, by means of which the receiving device 110 can be attached.
  • the receptacle is formed by two horizontally extending parallel slots in the inlet pipe 8, which has the shape of a straight prism and assumes the function of a nut, by means of which the burner unit 2 with a connecting part (Fig. 3, Pos. 32) can be screwed.
  • the shape of the evaporator 4 can be seen, which in one piece, consists of two identical tubular sections 5, 6, which are formed in the form of a double loop. The open ends of the double loop are connected together to the inlet pipe 8. Furthermore, a Flammleitelement 80 is shown, which surrounds the evaporator 4 in a central region of the tubular sections 5, 6 of the evaporator 4 and the air duct and the limitation of the flame is used.
  • the annular Flame guide 80 is made of stainless steel with a thickness of 1, 5 mm and has a height of 40 mm.
  • the diameter of the flame guide 80 is 1 10 mm.
  • the flame guide element 80 has, for cleaning purposes, a semicircular recess 87 at the lower edge 81 of the flame guide element 80, which serves as access to the nozzle.
  • the flame guide member 80 is fixed to the evaporator 4 by means of a welded joint by welding the flame guide member 80 to the first tubular portion 5 at a first point and to the second tubular portion 6 at a second point opposite to the first.
  • baffle plate 90 serves for the formation and optimum mixing of the fuel-air mixture.
  • the baffle plate 90 has a plurality of openings 92 arranged around a central area of the baffle plate 90. Thus, the central area of the baffle 90 remains free of openings. By means of the openings 92, a stowage effect of the fuel-air mixture is avoided.
  • a recess 94 can be seen, which is located in a region of the baffle plate 90, which is closest to the evaporator 4. As a result, the closest evaporator section is optimally heated.
  • FIG. 3 shows the cooking appliance 1 in a lateral sectional view.
  • the base unit 10 is formed in two parts and comprises a perforated metal sheet 10 and a base plate 20 mounted thereon.
  • the perforated metal sheet ring 10 has a plurality of ventilation openings 14.
  • a shielding plate 16 can be seen, which reduces the heat of radiation in the direction of the footprint.
  • the bottom plate 20 has a trough-shaped recess 26 and serves as a catch basin for leakage. At the same time it reduces the heating of the footprint.
  • spacers 22 can be seen, on soft the windshield (Fig. 1, Pos. 40) can be placed.
  • the spacers 22 form a radially circumferential primary air gap, which serves to supply the air from below to the flame.
  • a connecting part 32 for connecting the burner unit 2 and a fuel line 36 is mounted.
  • the connecting part 32 has below the bottom plate 20 in the form of a straight prism, which can be held for assembly purposes using a wrench.
  • the fuel line 36 which starting from the connecting part 32 is connected to a valve 29.
  • the valve 29 is mounted in a recess 18 which is located on a tab 28.
  • a portion of a flexible fuel hose is shown leading to an external tank (not shown).
  • the connecting part 32 Above the floor panel 20, the connecting part 32 has a circumferential external thread 33.
  • the connecting part 32 is pushed from below through the recess 30 and screwed above the bottom plate 20 by means of a nut 34 on the external thread 33.
  • a check valve 70 is formed, which prevents a return flow of hot oil in the direction of the flexible fuel hose.
  • the check valve 70 comprises a closure element 72, which is designed as a ball.
  • the ball of the check valve 70 is biased by its gravity in the closing direction.
  • a filter 76 can be seen, which is designed as a sintered filter, which is connected downstream of the check valve.
  • the filter 76 serves as a captive for the ball of the check valve 70.
  • the filter 76 has sections an external thread 77, which is screwed into a corresponding internal thread 39 of a located in the connecting part 32 bore 38.
  • the filter 76 is formed as a throttle device for increasing the flow resistance of the fuel.
  • the connection of the first tubular evaporator section 5 to the inlet pipe 8 can also be recognized.
  • FIG. 4 shows the burner unit 2 from FIG. 2 in a first lateral sectional view (section A-A, FIG. 5). It can be seen a bottom of the baffle plate 90, which is mounted at a distance of 28 mm to an outlet opening of a nozzle 7. Particularly well, the recesses 94, 95 can be seen, which serve to heat the nearest evaporator section.
  • the radius of curvature of the baffle plate 90 is 115 mm.
  • FIG. 5 shows a top view of the burner unit 2 from FIG. 2.
  • the tabs 96, 97, 98 of the baffle plate 90 which are clipped into the holders 84, 85, 86 90 enclosed by the flame guide element 80, can be seen.
  • Particularly clearly visible are the two individual preheating shells 112, 114 of the receiving device 1 10, which are each exactly below the recesses 94, 95 of the baffle plate 90.
  • the edge of the baffle plate 90 formed by the recesses 94, 94 parallel to the central longitudinal axis of the rectangular preheat shells 112, 114.
  • the heat generated by the combustion of the second fuel is allowed Areas of the evaporator 4 heats unhindered, which are located between the flame guide element 80 and the baffle plate 90.
  • a handle 1 16 is shown, by means of which the receiving device 110 can be held.
  • the anti-jamming openings 92 of the baffle 90 are arranged such that a central area of the baffle 90 is free of openings.
  • FIG. 6 shows the burner unit from FIG. 2 in a second lateral sectional view (section B-B, FIG. 4).
  • the inlet pipe 8 which has at a lower portion a bore with an internal thread, by means of which the burner unit 2 on the connecting part (Fig. 3, Pos. 32) can be mounted.
  • Good to see is an inner region of the inlet pipe 8, from which the liquid fuel in the two tubular evaporator sections 5, 6 is transported.
  • FIG. 7 shows a bottom plate of the cooking appliance in a lateral sectional view.
  • spacers 22 which serve to form the primary air gap.
  • the check valve 70 formed in the connector 32 is shown.
  • the connecting part 32 has an external thread 33 above the base plate 20 and a thread 39 formed inside the bore 38. By means of a nut 34, the connecting part 32 is screwed to the bottom plate 20.
  • the external thread 33 serves for mounting the burner unit (FIG. 2, item 2).
  • the connecting part 32, the fuel line 36 and the valve 29 are integrally formed.
  • the fuel line 36 is fixed to the connecting part 32 and the valve 29 by a welded connection.
  • the connecting part 32 has a horizontally extending fuel channel of the same diameter, which represents the extension of the fuel line 36.
  • the fuel channel bends upwards at right angles, for which reason it has a partial section which runs parallel to the central longitudinal axis of the connecting part 32.
  • a region is formed whose diameter increases in the direction of flow of the fuel.
  • This area essentially has a conical shape.
  • a ball formed as a closure element 72, which is biased by its gravity in the closing direction.
  • a sintered filter 76 As a captive for the closure member 72 is a sintered filter 76, which has a filter outer thread 77 and is screwed into the internal thread 39 of the connecting part 32.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Commercial Cooking Devices (AREA)
  • Evaporation-Type Combustion Burners (AREA)

Abstract

L'invention concerne un dispositif de cuisson, notamment un réchaud à huile végétale, comportant une unité de brûleur (2) destinée à produire une flamme ouverte par combustion d'un combustible liquide, pourvue d'un évaporateur (4) entouré par un élément guide-flamme (80). Pour améliorer le comportement de combustion de l'appareil de cuisson, l'évaporateur (4) fait au moins partiellement saillie vers le haut et/ou vers le bas par rapport à l'élément guide-flamme (80).
PCT/EP2009/062246 2008-09-30 2009-09-22 Dispositif de cuisson WO2010037668A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008042484.6 2008-09-30
DE102008042484A DE102008042484A1 (de) 2008-09-30 2008-09-30 Kochgerät

Publications (2)

Publication Number Publication Date
WO2010037668A2 true WO2010037668A2 (fr) 2010-04-08
WO2010037668A3 WO2010037668A3 (fr) 2011-01-13

Family

ID=41395782

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/062246 WO2010037668A2 (fr) 2008-09-30 2009-09-22 Dispositif de cuisson

Country Status (2)

Country Link
DE (1) DE102008042484A1 (fr)
WO (1) WO2010037668A2 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1447796A (en) * 1922-01-16 1923-03-06 Detroit Torch & Mfg Company Fire pot
GB227356A (en) * 1924-06-06 1925-01-15 Oskar Jaehnisch Improvements in heating apparatus burning liquid fuel
GB236770A (en) * 1924-09-24 1925-07-16 Berger Fritz Improvements in or relating to apparatus for burning liquid fuel
FR624691A (fr) * 1926-11-16 1927-07-23 Brûleur pour appareil de chauffage à pétrole
GB398358A (en) * 1932-10-26 1933-09-14 John Priston Cutts Improved paraffin oil vapour burners
GB622702A (en) * 1947-02-08 1949-05-05 Valor Co Ltd Improvements relating to burners for pressure oil stoves
GB1560070A (en) * 1978-05-25 1980-01-30 Laguinia E L Burner assembly
DE3130542A1 (de) * 1981-08-01 1983-02-17 Ernst 8399 Bad Füssing Röhner Durchlaufverdampfer fuer oelbrenner
WO1999004200A1 (fr) * 1997-07-14 1999-01-28 Primus Ab Cuisiniere de plein air
DE10161154A1 (de) * 2001-12-14 2003-06-18 Bsh Bosch Siemens Hausgeraete Brenner für einen mit flüssigem Brennstoff betriebenen Kocher, vorzugsweise für einen Pflanzenölkocher

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US398358A (en) * 1889-02-19 Sole-laying machine
DE325868C (de) * 1919-07-01 1920-09-18 B A Hjorth & Co Ab Dampfbrenner fuer fluessige Brennstoffe zur Erzeugung von Blauflammen fuer Heiz- und Beleuchtungszwecke
DE2807922A1 (de) * 1974-11-12 1979-08-30 Anton Lurz Verdampferbrenner
DE3718994A1 (de) * 1987-06-06 1988-12-22 Kaercher Gmbh & Co Alfred Druckverdampferbrenner, vorzugsweise zur verwendung in einem feldkochherd
US5803727A (en) * 1997-01-30 1998-09-08 The Coleman Company, Inc. Burner assembly for burning appliances
DE102005049245A1 (de) * 2005-10-14 2007-04-19 BSH Bosch und Siemens Hausgeräte GmbH Brenner

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1447796A (en) * 1922-01-16 1923-03-06 Detroit Torch & Mfg Company Fire pot
GB227356A (en) * 1924-06-06 1925-01-15 Oskar Jaehnisch Improvements in heating apparatus burning liquid fuel
GB236770A (en) * 1924-09-24 1925-07-16 Berger Fritz Improvements in or relating to apparatus for burning liquid fuel
FR624691A (fr) * 1926-11-16 1927-07-23 Brûleur pour appareil de chauffage à pétrole
GB398358A (en) * 1932-10-26 1933-09-14 John Priston Cutts Improved paraffin oil vapour burners
GB622702A (en) * 1947-02-08 1949-05-05 Valor Co Ltd Improvements relating to burners for pressure oil stoves
GB1560070A (en) * 1978-05-25 1980-01-30 Laguinia E L Burner assembly
DE3130542A1 (de) * 1981-08-01 1983-02-17 Ernst 8399 Bad Füssing Röhner Durchlaufverdampfer fuer oelbrenner
WO1999004200A1 (fr) * 1997-07-14 1999-01-28 Primus Ab Cuisiniere de plein air
DE10161154A1 (de) * 2001-12-14 2003-06-18 Bsh Bosch Siemens Hausgeraete Brenner für einen mit flüssigem Brennstoff betriebenen Kocher, vorzugsweise für einen Pflanzenölkocher

Also Published As

Publication number Publication date
DE102008042484A1 (de) 2010-04-01
WO2010037668A3 (fr) 2011-01-13

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