EP1772669A2 - Einrichtung zum Heizen und Erzeugen von Dampf für Garofen - Google Patents

Einrichtung zum Heizen und Erzeugen von Dampf für Garofen Download PDF

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Publication number
EP1772669A2
EP1772669A2 EP06121860A EP06121860A EP1772669A2 EP 1772669 A2 EP1772669 A2 EP 1772669A2 EP 06121860 A EP06121860 A EP 06121860A EP 06121860 A EP06121860 A EP 06121860A EP 1772669 A2 EP1772669 A2 EP 1772669A2
Authority
EP
European Patent Office
Prior art keywords
gas
steam
oven
air
burner
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.)
Withdrawn
Application number
EP06121860A
Other languages
English (en)
French (fr)
Other versions
EP1772669A3 (de
Inventor
Jean-Charles Violi
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.)
Societe Cooperative de Production Bourgeois SCOP
Original Assignee
Societe Cooperative de Production Bourgeois SCOP
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 Societe Cooperative de Production Bourgeois SCOP filed Critical Societe Cooperative de Production Bourgeois SCOP
Publication of EP1772669A2 publication Critical patent/EP1772669A2/de
Publication of EP1772669A3 publication Critical patent/EP1772669A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F24C15/00—Details
    • F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
    • F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
    • F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B27/00—Instantaneous or flash steam boilers

Definitions

  • the present invention relates to food ovens used by food professionals or communities, and more particularly the means for heating and steam production of these food ovens.
  • Steam generating devices are already known including a boiler located outside the oven enclosure. These boilers are usually electric and, like a kettle, allow the production of steam that is injected at will in the indoor atmosphere of the oven enclosure. These devices are generally high energy consumers, and relatively expensive because requiring a design meeting very strict and restrictive safety standards.
  • a first problem proposed by the invention is to provide a steam production device of economic design and whose operation requires very little energy.
  • the invention aims at producing a device for producing steam that substantially improves the production efficiency of water vapor in the interior atmosphere of an oven enclosure.
  • Such a device for heating and producing steam is economical and less cumbersome than the steam production devices using a boiler.
  • it is a device for heating and producing compact steam, occupying only a very small space in the furnace enclosure.
  • Such a heating device and steam production also significantly improves the steam production efficiency, the energy used for the vaporization of water being directly from the combustion of gas occurring in the burner , and the water arriving directly into the steam generating compartment which is thermally bonded to the gas burner. As a result, there is less water loss and less run-off on the perimeter walls of the oven enclosure, which also allows for better control of the moisture content of the oven interior atmosphere.
  • the device according to the invention makes it possible to regulate more easily the temperature of the burner and therefore the temperature of the interior atmosphere of the furnace enclosure by injecting water into the steam production compartment which is thermally bonded to the gas burner.
  • the temperature decrease of the gas burner is thus faster and allows to link more quickly the cooking of different dishes with very different cooking temperatures or a cooking temperature curve with very different temperature levels over time.
  • the steam outlet orifices may be arranged in a ring around the exit face.
  • the heating device and steam production according to the invention may further comprise means for controlling the flow and pressure of the liquid supply means.
  • This control of the flow rate and the pressure of the liquid supply means makes it possible to avoid possible hot gases in the means for supplying liquids from the interior atmosphere of the furnace chamber, and makes it possible to regulate the temperature of the gas burner, if necessary.
  • the heating device and steam production according to the invention may further comprise means for regulating the flow rate and the pressure of the mixture of air and gas in the gas burner. This effectively regulates the heating power of the burner by enriching more or less the air or gas content of the mixture of air and gas.
  • the regulating means can maintain permanently higher than a minimum flow rate of the mixture of air and gas introduced into the gas burner. This avoids the extinction of the gas burner and the rise of steam from the inside atmosphere of the furnace chamber in the gas burner, which vapor could condense and shut off the gas burner, preventing its subsequent operation.
  • the heating device and steam production according to the invention may include an electrical resistance adapted to ensure the maintenance of the gas burner at a sufficient temperature in the absence of flames. This prevents the penetration of moist air into the body of the gas burner.
  • the steam production chamber around the burner body is removable to facilitate periodic cleaning.
  • the maintenance of the heating device and steam production according to the invention is thus facilitated to effectively remove any deposits of material in suspension in water that has been used for the production of steam, such as limestone.
  • the liquid supply means can be used for the introduction of active cleaning liquids.
  • active cleaning liquids There is thus an effective periodic cleaning mode of the heating device and steam production, which requires no manpower.
  • cleaning can be periodically programmed very easily.
  • the device for heating and producing steam according to the invention is intended to be placed in an oven for cooking food and may advantageously be placed near the center of an internal air circulation turbine, alignment with the axis of rotation of the inner turbine itself driven in rotation by motor means along an axis generally perpendicular to a face of the peripheral wall, the inner turbine being disposed near the face of the peripheral wall and being adapted to aspirate the air axially and to discharge it radially in an air discharge zone parallel to the peripheral wall face.
  • This particular arrangement of the device for heating and producing steam according to the invention in a furnace for cooking food allows to distribute homogeneously heat energy supplied by the gas burner and the steam produced by the injection of water in the steam production compartment thermally bonded to the gas burner.
  • the inner turbine may have a generally cylindrical structure, with a disc-shaped rear flange carrying a plurality of short, peripherally distributed, short front blades extending from the rear flange to an open inlet face of the turbine.
  • the outlet face of the gas burner and the inlet face of the turbine can be substantially coplanar.
  • the total heat flow produced by the gas burner is thus sucked by the internal turbine and circulated in the inner chamber of the furnace, resulting in a faster temperature rise of the furnace, while ensuring a good temperature homogeneity in the furnace. the oven enclosure.
  • the heating and steam production device comprises a gas burner 100 having a burner hollow body 1 in which a mixture of air and gas is fed through a pipe 2, the burner hollow body 1 having combustion gas outlet ports 3 distributed on an outlet face 4 for directing the combustion gases into a cooking chamber according to at least one direction of exit.
  • the heating and steam production device further comprises a steam production compartment 5, thermally linked to the gas burner 100, defining a peripheral cavity 6 in communication with the cooking chamber 15 via outlets 7.
  • the steam outlet ports 7 are advantageously arranged in a ring around the outlet face 4. The steam is thus uniformly sprayed all around the gas burner 100.
  • Liquid supply means 8 make it possible to bring liquids such as water into said peripheral cavity 6 from outside the enclosure 15 by means of a liquid inlet pipe 9.
  • the supply of liquids 8 is regulated in flow rate and pressure by means 10 for controlling the flow rate and the pressure of the liquids arriving via the liquid inlet pipe 9 into the peripheral cavity 6.
  • the flow rate and the pressure of the mixture of air and gas flowing in the air and gas inlet duct 2 are controlled by means 11 for regulating the flow and the pressure of the air mixture, and gas.
  • the means 11 for regulating the flow rate and the pressure of the mixture of air and gas in the gas burner 100 make it possible for them to effectively regulate the heating power of the burner, by introducing the quantity of air and gas required. .
  • the regulating means 11 also make it possible to keep the flow rate of the mixture of air and gas introduced into the gas burner 100 by the inlet duct of air and gas 2 continuously higher than a minimum flow rate. presence of flames permanently at the outlet of the gas burner 100, and thus prevents the penetration of moist air into the hollow body 1 of the gas burner 100.
  • the heating and steam production device comprises an electrical resistance 12 disposed on the hollow body 1 of the burner. This electrical resistance makes it possible to maintain the gas burner 100 at a temperature sufficient to prevent condensation of vapor in the gas burner 100 in the absence of flames.
  • the steam production chamber 5 formed around the burner hollow body 1 is attached and can be removed from the hollow body 1 of the burner by means of a pull in the direction defined by the arrow 13.
  • the steam generating compartment 5 is thus easily removed for periodic cleaning. This is particularly useful for use in areas where water is laden with limestone or other ionic substances that can form residues after evaporation of the water in which they are located.
  • the liquid supply means 8 also make it possible to supply detergent through the liquid inlet pipe 9.
  • This detergent may be introduced to ensure periodic cleaning of the steam production compartment 5.
  • the elimination of this detergent is then performed by injecting again a small amount of water into the liquid inlet pipe 9 into the peripheral cavity 6 of the steam generating compartment 5.
  • Such a detergent injection may be programmed to periodically clean the furnace , after a determined number of hours of operation for example.
  • FIG. 3 is a perspective view of an oven 14 having in its enclosure 15 a heating device and steam production according to the invention.
  • the heating and steam production device is disposed near the center of an internal turbine 16 which allows the circulation of the air contained in the internal atmosphere of the chamber 15.
  • This inner turbine is rotated. by motor means along an axis generally perpendicular to the face 17 of the peripheral wall, is disposed near the face 17 of the peripheral wall, and is adapted to aspirate the air axially and to discharge it radially in a discharge zone of air parallel to the face 17 of the peripheral wall.
  • the inner turbine 16 has a generally cylindrical structure, with a disc-shaped rear flange 22 carrying a plurality of short, peripherally distributed short vanes extending from the posterior flange 22 to an open inlet face 21 of the turbine 16.
  • the outlet face 4 of the gas burner 100 and the inlet face 21 of the turbine 16 are substantially coplanar.
  • the inner turbine 16 is shaped to suck the air axially in the direction defined by the arrow 18 and to discharge it radially according to the arrows 19 parallel to the face 17 of the peripheral wall.
  • Such an arrangement of the heating device and steam production according to the invention allows to distribute homogeneously and quickly the heat energy provided by the combustion of the gas burner gas 100. In addition, it allows to distribute homogeneously and rapidly in the enclosure 15 of the furnace 14 the steam produced by the heating device and steam production according to the invention.
  • liquid inlet pipe 9 When it is desired to produce steam during the cooking of food in the furnace 14, water is injected from outside the oven enclosure by the liquid inlet pipe 9 at a rate and pressure controlled by the flow control and pressure control means. This water is injected into the peripheral cavity 6 of the steam production compartment which is thermally bonded to the gas burner 100. The water reaching the peripheral cavity 6 then sees its temperature rise abruptly to a temperature greater than 100 ° C. and is then transformed into vapor that escapes from the peripheral cavity 6 in the enclosure 15 of the furnace 14 to humidify the indoor atmosphere. The vapor produced by the evaporation of the water coming through the liquid inlet pipe 9 can not go back up into the liquid inlet pipe 9 because of the control of the flow rate and of the pressure in the water supply means. liquids 8 provided by the control means 10 flow and pressure.
  • a liquid active agent can be fed through the liquid inlet pipe 9 into the steam generating compartment 5.
  • the liquid active agent can then also escape from the steam generating compartment 5 through the steam outlet ports 7 and, in the context of the configuration shown in Figure 3, fall on the blades 20 of the inner turbine 16 in rotation.
  • the liquid active agent is then sprayed onto all the peripheral walls of the enclosure 15 of the oven 14 to clean it.
  • For rinsing, this time water is injected via the liquid inlet pipe 9 into the steam production compartment 5.
  • the hollow body 1 of the burner being then cold, this water will escape from the production compartment steam 5 through the steam outlet ports 7, and fall on the blades 20 of the inner turbine 16 which, rotated, projects this water over the entire surface of the peripheral walls of the chamber 15 of the furnace 14. This ensures a cleaning of the enclosure 15 of the furnace 14 with a liquid active agent and rinsing with water.
  • the liquid active agent may be detergent, in order to remove the fat accumulated in the enclosure of the oven 14 during the cooking of food.
  • the liquid active agent may also be an acid, making it possible to eliminate any trace of limestone or residues resulting from the evaporation of water in the steam production compartment 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Commercial Cooking Devices (AREA)
EP06121860A 2005-10-07 2006-10-05 Einrichtung zum Heizen und Erzeugen von Dampf für Garofen Withdrawn EP1772669A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0510621A FR2891702B1 (fr) 2005-10-07 2005-10-07 Dispositif de chauffe et de production de vapeur pour four

Publications (2)

Publication Number Publication Date
EP1772669A2 true EP1772669A2 (de) 2007-04-11
EP1772669A3 EP1772669A3 (de) 2009-07-15

Family

ID=36716659

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06121860A Withdrawn EP1772669A3 (de) 2005-10-07 2006-10-05 Einrichtung zum Heizen und Erzeugen von Dampf für Garofen

Country Status (2)

Country Link
EP (1) EP1772669A3 (de)
FR (1) FR2891702B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2970560A1 (fr) * 2011-01-19 2012-07-20 Bourgeois Dispositif de chauffe a flamme protegee
FR2970559A1 (fr) * 2011-01-19 2012-07-20 Bourgeois Dispositif de chauffe a moyens de production de vapeur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6188045B1 (en) * 2000-04-03 2001-02-13 Alto-Shaam, Inc. Combination oven with three-stage water atomizer
FR2828268B1 (fr) * 2001-07-31 2006-02-24 Bourgeois Prod Coop Four a gaz a convexion forcee
FR2839546B1 (fr) * 2002-05-07 2006-09-22 Premark Feg Llc Four pour la cuisson d'aliments
FR2849170B1 (fr) * 2002-12-23 2006-09-22 Premark Feg Llc Four pour la cuisson d'aliments
DE10347161A1 (de) * 2003-10-02 2004-09-02 Wiesheu Gmbh Vorrichtung zur thermischen Behandlung von Lebensmitteln

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2970560A1 (fr) * 2011-01-19 2012-07-20 Bourgeois Dispositif de chauffe a flamme protegee
FR2970559A1 (fr) * 2011-01-19 2012-07-20 Bourgeois Dispositif de chauffe a moyens de production de vapeur
EP2479501A1 (de) 2011-01-19 2012-07-25 Bourgeois Garofen mit einer Heizvorrichtung mit geschützter Flamme
EP2479500A1 (de) 2011-01-19 2012-07-25 Bourgeois Heizvorrichtung mit einem Dampferzeuger

Also Published As

Publication number Publication date
FR2891702A1 (fr) 2007-04-13
FR2891702B1 (fr) 2007-12-21
EP1772669A3 (de) 2009-07-15

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