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WO2010037669A2 - Dispositif de cuisson - Google Patents

Dispositif de cuisson Download PDF

Info

Publication number
WO2010037669A2
WO2010037669A2 PCT/EP2009/062250 EP2009062250W WO2010037669A2 WO 2010037669 A2 WO2010037669 A2 WO 2010037669A2 EP 2009062250 W EP2009062250 W EP 2009062250W WO 2010037669 A2 WO2010037669 A2 WO 2010037669A2
Authority
WO
WIPO (PCT)
Prior art keywords
baffle plate
cooking appliance
evaporator
fuel
flame
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.)
Ceased
Application number
PCT/EP2009/062250
Other languages
German (de)
English (en)
Other versions
WO2010037669A3 (fr
Inventor
Hubert Giraud
Horst Kutschera
Thomas Rauch
Martin Strasser
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
Publication of WO2010037669A2 publication Critical patent/WO2010037669A2/fr
Publication of WO2010037669A3 publication Critical patent/WO2010037669A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • 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
    • F23D99/00—Subject matter not provided for in other groups of this subclass
    • F23D99/002—Burners specially adapted for specific applications
    • F23D99/004—Burners specially adapted for specific applications for use in particular heating operations
    • 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
    • F23D2900/11001—Impinging-jet injectors or jet impinging on a surface

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 comprises a nozzle for the exit of the fuel, which is directed onto a baffle plate.
  • the baffle plate have a plurality of openings. Due to the openings in the baffle plate, a stowage effect during the combustion process is avoided.
  • the advantage of such a cooking appliance is therefore in particular that a better and more uniform temperature distribution is achieved at the evaporator. This in turn leads to a lower noise during the combustion process and a reduction of deposits on the evaporator.
  • a less expensive material can be used.
  • the baffle plate preferably has a curved, in particular dish-shaped form.
  • An advantageous development provides that a central region of the baffle plate is free of openings. This ensures that the fuel vapor emerging from the nozzle is deflected by the baffle plate, and thus sufficiently mixed with the ambient air in the combustion chamber.
  • the burner unit preferably has an evaporator which partially surrounds the baffle plate.
  • the evaporator is allowed to be uniformly heated during the combustion process, resulting in an improvement of the burning behavior.
  • the baffle plate recesses which are located in areas of the baffle plate, which are closest to the evaporator. Due to the Recesses, the heating of the evaporator is improved, resulting in an optimized temperature distribution at the evaporator.
  • a radius of curvature of the baffle plate is between 100 mm and 130 mm, in particular between 1 10 mm and 120 mm. This improves the burning behavior and achieves a more uniform temperature distribution at the evaporator.
  • a distance (D) between an underside of the baffle plate and an outlet opening of the nozzle is between 25 mm and 30 mm, in particular between 27 mm and 29 mm.
  • This arrangement also leads to improved burning behavior and a more uniform temperature distribution. Due to the above-mentioned advantages, the efficiency of the cooking appliance is optimized and the combustion noise and deposits on the evaporator are reduced.
  • baffle plate is mounted on a flame guide, which limits the flame to the side.
  • the flame guide serves in particular the air flow and the limitation of the flame. Due to the mounting of the baffle plate on the flame guide element attachment is made possible by simple means. In addition, due to this arrangement can create a combustion chamber within which the fuel vapor-air mixture burns optimally.
  • the baffle plate preferably has at least two tabs which are held in holders of the flame guiding element.
  • the holder of the baffle plate is made possible by simple means.
  • a particularly robust construction is thus achieved.
  • Fig. 1 is a cooking appliance in a perspective view
  • FIG. 2 shows a burner unit of the cooking appliance in a perspective view
  • FIG. 3 shows the cooking appliance in a lateral 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 VV 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 is formed, 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 with respect to the receptacles 64, 65, 66. Therefore, a parked on the pot support 52 pot is further away from the flame, and thus the heat transfer is lower in the food. 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.
  • 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 element 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. It can be seen that 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 element 80 is on Evaporator 4 is fastened by means of a welded connection in that the flame guiding element 80 is welded to the first tubular section 5 at a first point and to the second tubular section 6 at a second point opposite 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 is connected starting from the connecting part 32 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 from below through the recess 30th pushed 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 well visible are the two individual preheat shells 1 12, 114 of the receiving device 1 10, which are each just below the recesses 94, 95 of the baffle plate 90.
  • the edge of the baffle plate 90 formed by the recesses 94, 94 extends parallel to the central longitudinal axis of the rectangular preheating shells 112, 114.
  • FIG. 6 shows the burner unit from FIG. 2 in a second lateral sectional view (section BB, 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Commercial Cooking Devices (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'une buse (7) pour la sortie de combustible, orientée vers une plaque de déviation (90). Pour améliorer le comportement de combustion du dispositif de cuisson, la plaque de déviation (90) présente une pluralité d'ouvertures (92).
PCT/EP2009/062250 2008-09-30 2009-09-22 Dispositif de cuisson Ceased WO2010037669A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008042483.8 2008-09-30
DE102008042483A DE102008042483A1 (de) 2008-09-30 2008-09-30 Kochgerät

Publications (2)

Publication Number Publication Date
WO2010037669A2 true WO2010037669A2 (fr) 2010-04-08
WO2010037669A3 WO2010037669A3 (fr) 2011-02-24

Family

ID=41402221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/062250 Ceased WO2010037669A2 (fr) 2008-09-30 2009-09-22 Dispositif de cuisson

Country Status (2)

Country Link
DE (1) DE102008042483A1 (fr)
WO (1) WO2010037669A2 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB398358A (en) * 1932-10-26 1933-09-14 John Priston Cutts Improved paraffin oil vapour burners
US2721607A (en) * 1954-04-30 1955-10-25 Hunter Liquid fuel burner and ignition means therefor
GB1560070A (en) * 1978-05-25 1980-01-30 Laguinia E L Burner assembly
DE2833686C2 (de) * 1978-08-01 1983-12-15 Hermann Dipl.-Ing. 8899 Langenmosen Kopp Brenner für flüssige Brennstoffe
JPS58200911A (ja) * 1982-05-17 1983-11-22 Inax Corp 液体燃料の燃焼装置
KR890000327B1 (ko) * 1984-04-19 1989-03-14 도오도오 기기 가부시기가이샤 액체연료 기화식 버어너의 연소 방법및 그 장치
DE3900333C1 (en) * 1989-01-07 1990-05-17 Marsteller & Killmann Gmbh & Co Kg, 4300 Essen, De Cooking appliance which can be run either on gas or liquid fuel
ATE142324T1 (de) * 1992-02-28 1996-09-15 Fuellemann Patent Ag Brenner, insbesondere oelbrenner oder kombinierter oel/gas-brenner
US5803727A (en) * 1997-01-30 1998-09-08 The Coleman Company, Inc. Burner assembly for burning appliances
DE10161154A1 (de) 2001-12-14 2003-06-18 Bsh Bosch Siemens Hausgeraete Brenner für einen mit flüssigem Brennstoff betriebenen Kocher, vorzugsweise für einen Pflanzenölkocher
DE102004005113B4 (de) * 2004-02-02 2006-02-23 Webasto Ag Venturi-Brenner mit einem Abfangkörper
DE102005037366A1 (de) * 2005-08-08 2007-02-15 BSH Bosch und Siemens Hausgeräte GmbH Verdampfervorrichtung und Reinigungswerkzeug

Also Published As

Publication number Publication date
DE102008042483A1 (de) 2010-04-01
WO2010037669A3 (fr) 2011-02-24

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