EP0067806A1 - Four à cuire et à rôtir à chauffage au gaz - Google Patents

Four à cuire et à rôtir à chauffage au gaz Download PDF

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Publication number
EP0067806A1
EP0067806A1 EP82890089A EP82890089A EP0067806A1 EP 0067806 A1 EP0067806 A1 EP 0067806A1 EP 82890089 A EP82890089 A EP 82890089A EP 82890089 A EP82890089 A EP 82890089A EP 0067806 A1 EP0067806 A1 EP 0067806A1
Authority
EP
European Patent Office
Prior art keywords
plate
burner
chamber
baking
space
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
EP82890089A
Other languages
German (de)
English (en)
Other versions
EP0067806B1 (fr
Inventor
Pierre Nibelle
Franz Lindmayr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0067806A1 publication Critical patent/EP0067806A1/fr
Application granted granted Critical
Publication of EP0067806B1 publication Critical patent/EP0067806B1/fr
Expired 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

Definitions

  • the invention relates to a gas-heated baking, roasting and grilling oven for household purposes with a lockable oven space in which the hot air is circulated by a fan and the bottom of which is at least partially formed by a base plate, below which at least one burner is arranged is.
  • both primary and secondary air are supplied to the burner.
  • the resulting open combustion chamber is connected to the furnace chamber or a fan, with hot air or combustion gases being circulated in the furnace chamber.
  • the high excess air which has to be heated up due to the required secondary air has an adverse effect here. This leads to poor utilization of the heat energy supplied, especially with reduced burner output.
  • the suction capacity of the fan increases the excess air volume circulated with the exhaust gases, so that an acceptable level of efficiency can only be achieved when the gas burner is fully burned. Apart from this, the quality of the baked goods, roasts and grilled food is also affected by the exhaust gases due to the removal of moisture.
  • the bottom plate is as removable grill plate.
  • the invention has as its object, the efficiency of a B ack, and to improve and to create both the baking process as optimal for frying and grilling conditions roasting grill oven.
  • the invention consists essentially in that the burner is formed by a radiation burner known per se with a burner plate, the gas-air mixture being fed to the burner plate with an excess of stoichiometric air on its lower surface, flowing through openings in the burner plate and on the upper one
  • the surface of the same burns in a closed combustion chamber, to which an exhaust duct is connected
  • the base plate is formed by a heat-permeable or infrared-transparent plate, which covers the combustion chamber, and that at least one removable, in particular pull-out, distance from the base plate
  • Intermediate plate is arranged, which divides the furnace space into a suction space, which is in communication with the suction side of the blower, and in a blow-out space, which is in communication with the pressure side of the blower, the combustion space and the exhaust space being separated from the furnace space and opposite this are essentially sealed.
  • the removable intermediate plate which is formed in a simple manner by an intermediate plate, makes it possible to optimally utilize the heat both during the baking process and during the grilling or roasting process.
  • the arrangement is expediently such that the intermediate plate reaches close to the blower and on the side facing away from the blower, a free space for the backflow of the hot air from the blow-out space into the suction space is left free.
  • the air is heated in the space between the base plate and the intermediate plate and evenly fed to the baked goods by the blower, so that even baking takes place on several floors.
  • the intermediate plate ensures that the bottom heat does not predominate on the bottom floor, so that baking can be done evenly on all floors, which results in even browning.
  • the frying pan can now be placed directly on the base plate, so that the bottom heat is fully used, and it can also be used when grilling the skewer or grill grate.
  • the base plate can consist of any heat-permeable or infrared-transparent material, and according to the invention this base plate is expediently formed by a glass ceramic plate.
  • the fan is preferably designed as a cross-flow fan, which is arranged in the furnace chamber at the rear of the latter with a transverse axis and extends essentially over the width of the furnace chamber. Since the cross-flow fan extends essentially over the width of the furnace chamber, it is particularly suitable for extracting the heated air from the space between the base plate and the intermediate plate over the entire width of the same and for supplying it to the furnace chamber over the entire width of the same, so that laminar circulation of the hot air is achieved. Even if such a cross-flow fan is used, the charging of the furnace space will be more intensive in the middle areas than in the lateral edge areas.
  • two lateral flue gas chimneys are connected to the combustion chamber covered by the base plate, which are led upwards on both sides of the furnace chamber along the side walls thereof and extend essentially over the depth of the furnace chamber, the lateral heat-permeable walls of the furnace space form walls of the exhaust gas ducts.
  • the lateral areas of the furnace space which are less intensively smeared by the circulated hot air are additionally warmed up via the side walls, so that an approximately even heat distribution in the furnace chamber is guaranteed.
  • a common exhaust duct is expediently connected to the upper ends of the two side exhaust ducts, which in turn preferably opens into an exhaust duct arranged on the rear of the furnace.
  • the combustion chamber preferably in the combustion chamber, expediently in the upper region thereof, there is a web which runs approximately parallel to the side walls of the furnace chamber and is arranged centrally between them.
  • the exhaust gas flow is divided in an advantageous manner, so that the lateral exhaust ducts are evenly charged with exhaust gases.
  • the arrangement is preferably such that the burner plate is divided into a main burner plate and a pilot burner plate and that separate mixture spaces are provided for the main burner plate and for the pilot burner plate, to which the gas-air mixture is supplied via separate venturi tubes.
  • the full power of the burner can be used with optimum efficiency for the baking, roasting and grilling process.
  • a low heat input is advantageous.
  • only the pilot burner plate is put into operation and it is possible to work with optimal efficiency even in such processes.
  • F ig. 1 shows a vertical section along line I-I of FIG. 2 and FIG. 2 show a horizontal section along line II-IT of FIG. 1.
  • FIG. 3 shows the oven in a roasting process in the same section as FIG. 1 and
  • FIG. 4 shows the oven in a same vertical section as FIG. 1 Grilling process.
  • 1 is the furnace door, 2 and 3 are the side walls of the furnace space 4.
  • 5 is the ceiling of the furnace space and 6 is the floor of the furnace space.
  • 7 represents thermal insulation.
  • This main burner plate 8 is the main burner plate of a surface burner.
  • This main burner plate 8 consists, for example, of ceramic material and has perforations through which the gas-air mixture flows upwards from the mixture chamber 9 and burns in a combustion chamber 10 on the surface of the burner plate 8.
  • the gas-air mixture is fed to the mixture chamber 9 via a venturi tube 11 with an excess of stoichiometric air.
  • the combustion chamber 10 is closed against air access and therefore there is no secondary air access into the combustion chamber 10.
  • Exhaust ducts 12 and 13 are connected to the combustion chamber 10.
  • 14 is a small burner plate part, to which the mixture is supplied separately via a Venturi tube 15. This burner plate part is designed in the same way as the main burner plate and serves as a pilot burner and as a burner for small outputs.
  • the combustion chamber 10 is closed off by a base plate 16 made of heat-permeable material.
  • This base plate 16 is formed by a glass ceramic plate.
  • the combustion chamber 10 is sealed off from the furnace chamber 4 by a seal 17.
  • the air is heated by the burner plate 8, which acts as a radiation burner, since, as already mentioned, the base plate 16 consists of heat-permeable or infrared-transparent material.
  • 20 is a cross-flow fan which extends essentially over the width of the furnace chamber 4 and is separated from the furnace chamber 4 by a protective grille 21.
  • the cross-flow fan sucks the heated air out of the suction space 19, blows it out into the blow-out space 36 and guides it in laminar flow over baking trays 22 inserted into the oven space 4, so that the baked goods are evenly heated.
  • the cross-flow fan 20 is indeed suitable for circulating the air in a laminar flow over a large width. In the side areas of the oven chamber 4, however, the charging with hot air will nevertheless be lower and the side flue gas ducts 12 and 13 serve to raise the temperature in the oven chamber 4 in these lateral zones and thus to keep the temperature in the entire baking chamber as constant as possible.
  • a common flue gas duct 23 is connected to the upper end of the flue gas ducts 12 and 13 and opens, for example, into a vertical flue gas duct 24 at the rear of the furnace. This exhaust duct 24 can open into the installation space of the furnace or into a fireplace or can be passed through the outer wall of the room in which the furnace is installed.
  • baking When baking, the baking trays 22 are pushed in, as shown in FIG. 1, and baking can take place here on several levels.
  • the intermediate plate 18 When the oven is used as a roasting oven, as shown in Fig. 3, the intermediate plate 18 is generally pulled out and removed, including the baking trays 22, and the frying pan 25 can be placed directly on the heat-permeable base plate so that it is heated up. However, the intermediate plate 18 can also remain in the oven space, as indicated by dashed lines in FIG. 3, and the frying pan can be placed on this intermediate plate if less heat is required.
  • the blower 20 can then be stopped or put into operation as desired.
  • a grill skewer 26 can be set up in the oven space 4 or a grill grate 27 can be inserted into the oven space instead of the intermediate plate 18. In this case too, the fan 20 can be stopped or put into operation as desired.
  • 28 is a thermostat
  • 29 is a temperature sensor
  • 30 is an ignition device
  • 31 is a thermocouple.
  • 32 is a vapor extractor with an inserted filter, which opens into the exhaust duct 23.
  • 33 is a diaphragm bearing for the cross-flow fan 20, which can absorb thermal expansion, and 34 is the drive motor for the cross-flow fan 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
EP19820890089 1981-06-16 1982-06-15 Four à cuire et à rôtir à chauffage au gaz Expired EP0067806B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT268581 1981-06-16
AT2685/81 1981-06-16

Publications (2)

Publication Number Publication Date
EP0067806A1 true EP0067806A1 (fr) 1982-12-22
EP0067806B1 EP0067806B1 (fr) 1984-11-28

Family

ID=3538663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820890089 Expired EP0067806B1 (fr) 1981-06-16 1982-06-15 Four à cuire et à rôtir à chauffage au gaz

Country Status (2)

Country Link
EP (1) EP0067806B1 (fr)
DE (1) DE3261366D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393447A1 (fr) * 1989-04-20 1990-10-24 Alcatel SEL Aktiengesellschaft Fourneau électrique à circulation d'air de chauffage
EP0955501A2 (fr) * 1998-04-06 1999-11-10 Dacor, Inc. Four électrique de cuisson avec grilloir à gaz à rayonnement infrarouge
NL1014044C2 (nl) * 2000-01-10 2001-07-19 Levens Group B V Door gasbrander verwarmde oven.
EP2610557A1 (fr) * 2011-12-27 2013-07-03 V-Zug AG Four de cuisson avec chauffage de la sole et de l'air chaud
WO2016132283A1 (fr) * 2015-02-20 2016-08-25 DE MASI, Antonino Four automatique pour la cuisson de produits de boulangerie et en particulier de pizzas

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124382A (fr) * 1955-05-17 1956-10-09 Appareil de cuisson à air chaud
US3148674A (en) * 1963-06-24 1964-09-15 Wolf Range Corp Air circulating oven
FR2444232A2 (fr) * 1978-12-13 1980-07-11 Europ Equip Menager Four a gaz a deux enceintes de cuisson

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124382A (fr) * 1955-05-17 1956-10-09 Appareil de cuisson à air chaud
US3148674A (en) * 1963-06-24 1964-09-15 Wolf Range Corp Air circulating oven
FR2444232A2 (fr) * 1978-12-13 1980-07-11 Europ Equip Menager Four a gaz a deux enceintes de cuisson

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0393447A1 (fr) * 1989-04-20 1990-10-24 Alcatel SEL Aktiengesellschaft Fourneau électrique à circulation d'air de chauffage
EP0955501A2 (fr) * 1998-04-06 1999-11-10 Dacor, Inc. Four électrique de cuisson avec grilloir à gaz à rayonnement infrarouge
EP0955501A3 (fr) * 1998-04-06 2001-09-12 Distinctive Appliances, Inc Four électrique de cuisson avec grilloir à gaz à rayonnement infrarouge
NL1014044C2 (nl) * 2000-01-10 2001-07-19 Levens Group B V Door gasbrander verwarmde oven.
EP2610557A1 (fr) * 2011-12-27 2013-07-03 V-Zug AG Four de cuisson avec chauffage de la sole et de l'air chaud
WO2016132283A1 (fr) * 2015-02-20 2016-08-25 DE MASI, Antonino Four automatique pour la cuisson de produits de boulangerie et en particulier de pizzas
CN107249335A (zh) * 2015-02-20 2017-10-13 安东尼诺·德·玛斯 用于烹制焙烤产品尤其是披萨的自动烤炉
CN107249335B (zh) * 2015-02-20 2019-08-13 安东尼诺·德·玛斯 用于烹制焙烤产品的自动烤炉及其使用方法

Also Published As

Publication number Publication date
DE3261366D1 (en) 1985-01-10
EP0067806B1 (fr) 1984-11-28

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