EP2242332B1 - Microwave cooking oven including a technical area located at the top of a dome-shaped enclosure. - Google Patents

Microwave cooking oven including a technical area located at the top of a dome-shaped enclosure. Download PDF

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Publication number
EP2242332B1
EP2242332B1 EP20100159571 EP10159571A EP2242332B1 EP 2242332 B1 EP2242332 B1 EP 2242332B1 EP 20100159571 EP20100159571 EP 20100159571 EP 10159571 A EP10159571 A EP 10159571A EP 2242332 B1 EP2242332 B1 EP 2242332B1
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EP
European Patent Office
Prior art keywords
dome
microwave oven
shaped wall
wall
cooking chamber
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.)
Active
Application number
EP20100159571
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German (de)
French (fr)
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EP2242332A1 (en
Inventor
Tom Snow
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FagorBrandt SAS
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FagorBrandt SAS
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Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Priority to EP12191901.3A priority Critical patent/EP2557895A3/en
Publication of EP2242332A1 publication Critical patent/EP2242332A1/en
Application granted granted Critical
Publication of EP2242332B1 publication Critical patent/EP2242332B1/en
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    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6402—Aspects relating to the microwave cavity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6414—Aspects relating to the door of the microwave heating apparatus
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6444—Aspects relating to lighting devices in the microwave cavity
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/645—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using temperature sensors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/6447—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors
    • H05B6/6458—Method of operation or details of the microwave heating apparatus related to the use of detectors or sensors using humidity or vapor sensors

Definitions

  • the present invention relates to a microwave oven equipped with a technical area located at the top of a dome-shaped wall constituting a cooking chamber.
  • It relates generally to domestic microwave cooking ovens comprising a technical zone for carrying out heating cycles inside a cooking chamber.
  • microwave ovens comprise a substantially parallelepiped shaped cooking chamber housed inside a body.
  • the cooking chamber comprises a bottom wall, an upper wall, a bottom wall and two side walls. An opening in front of the cooking chamber is closed by a door.
  • microwaves are generally equipped with a lighting device mounted on a side wall of the cooking chamber.
  • microwave ovens also comprise a ventilation device of the cooking chamber provided with air outlet openings located in the rear part of the upper wall of the cooking chamber and inlet openings. of air located in front of the upper wall of the cooking chamber through which a flow of air is circulated by a fan.
  • This circulation of air removes moisture inside the cooking chamber, and in particular to avoid condensation on the door closing the opening on the front face of the cooking chamber.
  • These cooking ovens may also include one or more sensors positioned along a side wall or an upper wall of the cooking chamber and adapted to cooperate with a control microcontroller of the microwave oven.
  • microwave ovens have the disadvantage of having operating elements located at different locations of the cooking chamber.
  • electrical power cables are routed to different operating elements of the microwave oven generating additional cost by reducing the number of power supply cables and the complexity of the passage of power supply cables. at different points between the cooking chamber and the body of the microwave oven.
  • the document is also known US 2,993,973 A which describes a microwave cooking oven on which a support plate, made of a material transparent to microwave energy, is disposed horizontally in an opening in a work plane.
  • a dome-shaped wall is adapted to cover the plate and define therewith a cooking chamber above the plate.
  • the baking oven includes a partition disposed horizontally in the upper portion of the dome, separating the interior thereof from the interior of the baking cavity and a lamp compartment.
  • the lamp is used inside the compartment and illuminated by the presence of microwave energy in small quantities.
  • the partition includes a plurality of openings for passage therethrough of a limited amount of microwave energy from the cooking chamber to the lamp compartment to allow illumination of the lamp. The openings also allow the passage of light from the illuminated lamp to the interior of the cooking chamber.
  • the wall defining the lamp compartment may also include a plurality of openings allowing the lamp to be viewed from outside the lamp compartment.
  • the dome is provided with a pattern of perforations, being wide enough to allow viewing of the interior of the cooking chamber and small enough to prevent microwave leakage through them.
  • the present invention aims to solve the aforementioned drawbacks and to provide a microwave cooking oven to reduce the cost of obtaining the latter while having operating performance at least equal to that of a furnace of conventional microwave cooking.
  • the present invention relates to a microwave oven comprising a cooking chamber, said cooking chamber comprising a bottom wall and a dome-shaped wall, said dome-shaped wall being positioned above the cooking chamber. said bottom wall so as to define a cooking space, and said dome-shaped wall comprising a technical area located at the top of said dome-shaped wall.
  • said dome-shaped wall is solid, and said technical zone situated at the top of said dome-shaped wall comprises at least one air discharge opening discharging at least part of the humid air and hot said cooking chamber during the implementation of a heating cycle by said microwave cooking oven.
  • the microwave oven comprises a technical zone located at the top of a dome-shaped wall constituting the cooking chamber. This technical area is adapted to receive several operating elements of a microwave oven so as to simplify the manufacture of the latter.
  • Said technical zone can thus be modular so as to receive different operating elements of the microwave oven or not depending on the model of microwave oven.
  • the positioning of the operating elements at the top of the dome-shaped wall makes it possible to optimize the operation of the latter.
  • said at least one air evacuation opening in the technical zone situated at the top of the dome-shaped wall makes it possible to evacuate hot moist air during a heating cycle implemented. by the microwave oven such as a fireplace.
  • a humid and hot air flow from the cooking chamber can thus be evacuated outside the microwave oven through said at least one air evacuation opening of the technical zone located at the top of the dome-shaped wall so as to prevent condensation from forming on said dome-shaped wall constituting the cooking chamber.
  • the moist and hot air flow from the cooking chamber may be of the natural convection type or by forced convection by means of a fan blowing air inside the cooking chamber.
  • said technical zone located at the top of said dome-shaped wall comprises at least one sensor cooperating with a controller of said microwave oven during the implementation of a cycle. heating by said microwave cooking oven.
  • said at least one sensor in the technical zone situated at the top of the dome-shaped wall makes it possible to control the operation of the microwave cooking oven by the communication between said at least one sensor and a controller of said microwave oven. microwave cooking.
  • the positioning of the at least one sensor in the technical zone at the top of the dome-shaped wall makes it easy to collect reliable data concerning the food or foods placed inside the cooking chamber and then to optimize the operation. of the microwave oven from these data.
  • said technical zone located at the top of said dome-shaped wall comprises at least one lighting device diffusing light up and down in said cooking chamber.
  • the cooking chamber is uniformly illuminated by said at least one lighting device and without creating shadows in a portion of the cooking chamber related to the space occupied by an article to be heated placed in the cooking chamber.
  • a microwave oven 1 comprises a cooking chamber 2.
  • the cooking chamber 2 comprises a bottom wall 3 and a dome-shaped wall 4.
  • the dome-shaped wall 4 is positioned above the bottom wall 3 so as to define a cooking space.
  • a magnetron In order to supply high frequency energy to the cooking chamber 2 of a microwave cooking oven 1, a magnetron is conventionally provided, of which an antenna opens into a waveguide formed against a wall of the cooking chamber 2.
  • the microwave oven 1 may also include one or more heating elements, including radiant heating elements of the electric heater type. The presence of this or these heating elements in the microwave oven 1 thus allows to add a traditional cooking function.
  • the cooking chamber 2 comprises a plate 5 housed in at least one depression 6 of the bottom wall 3.
  • the plate 5 may be a rotating plate rotatably mounted on an axis 7 driven by a motor (not shown) or a still plate installed in said at least one recess 6 of the bottom wall 3.
  • the useful volume of the cooking chamber 2 defined by the bottom wall 3 and the dome-shaped wall 4 is reduced so as to limit the areas of said cooking chamber 2 that are unnecessary during the heating of a food to be heated placed on a tray 5.
  • the dome-shaped wall 4 comprises a technical zone 8 situated at the top of the dome-shaped wall 4.
  • the microwave oven 1 comprises a technical zone 8 located at the top of a dome-shaped wall 4 constituting the cooking chamber 2.
  • This technical zone 8 is adapted to receive a plurality of operating elements 9, 10, 12 of a microwave oven 1 so as to simplify the manufacture of the latter.
  • Said technical zone 8 can thus be modular so as to receive different operating elements 9, 10, 12 of the microwave oven 1 or not depending on the microwave oven model.
  • the technical zone 8 located at the top of the dome-shaped wall 4 comprises at least one sensor 9 cooperating with a controller (not shown) of the microwave oven 1 during the implementation of a heating cycle by said microwave cooking oven 1.
  • said at least one sensor 9 of the technical zone 8 located at the top of the dome-shaped wall 4 makes it possible to control the operation of the microwave cooking oven 1 by the communication between said at least one sensor 9 and a controller of the microwave oven 1.
  • Said at least one sensor 9 may be, in particular, a humidity sensor for regulating the microwave energy supply according to the data collected by it and transmitted to a controller of the microwave oven 1.
  • the humidity sensor 9 collects data related to the water vapor released by the food placed inside the cooking chamber 2 during a heating cycle so as to slave the operating periods. magnetron using the controller controlling the microwave oven 1.
  • Said at least one sensor 9 can also be a temperature sensor for regulating the microwave energy supply according to the data collected by it and transmitted to a controller of the microwave oven 1, or an ultrasonic type distance measuring sensor for determining the size and number of containers containing the food placed in the cooking chamber 2.
  • the technical zone 8 can also comprise several sensors 9, and for example the combination of a humidity sensor and a temperature sensor.
  • the technical zone 8 located at the top of the domed wall 4 comprises at least one air evacuation opening 10 discharging at least a portion of the moist and hot air from the cooking chamber 2 during the implementation of a heating cycle by the microwave oven 1.
  • said at least one air evacuation opening 10 of the technical zone 8 located at the top of the dome-shaped wall 4 makes it possible to evacuate hot moist air during a heating cycle.
  • the microwave oven 1 such as a fireplace.
  • a moist and hot air flow F from the cooking chamber 2 can thus be evacuated outside the microwave oven 1 through said at least one air outlet opening 10.
  • the technical zone 8 situated at the top of the dome-shaped wall 4 so as to prevent condensation from forming on said dome-shaped wall 4 constituting the cooking chamber 2.
  • the flow of moist and hot air F from the cooking chamber 2 may be of the natural convection or forced convection type by means of a fan (not shown) blowing air inside the cooking chamber 2.
  • Said at least one air discharge opening 10 of the technical zone 8 located at the top of the dome-shaped wall 4 comprises a plurality of holes 11.
  • the holes 11 of said at least one air discharge opening 10 formed in the technical area 8 located at the top of the dome-shaped wall 4 of the cooking chamber 2 allow the flow of air F wet and hot to be discharged outside the cooking chamber 2 and are dimensioned so as to prevent microwaves out through said holes 11.
  • the microwave oven 1 thus has the minimum microwave leakage outside the cooking chamber 2.
  • the sizing of the holes 11 of the at least one air evacuation opening 10 is well known to those skilled in the art so as to prevent microwaves from coming out through said holes 11 and need not be described in more detail here.
  • the air flow F is generated by a fan (not shown) sucking air outside the microwave cooking oven 1 through an opening 25 in a wall 26 constituting the structure of said microwave oven 1, and blowing air inside the cooking chamber 2 through openings (not shown) formed in the bottom wall 3 and the periphery of the turntable 5.
  • the opening 25 located in the wall 26 constituting the structure of the microwave oven 1 can be made in the form of a perforated grid so as to allow the passage of an incoming air flow D.
  • This incoming air flow D is heated by passing close to the magnetron (not shown) generating the microwave energy necessary for heating food placed in the cooking chamber 2.
  • the incoming air flow D sucked to the outside of the microwave oven 1 is cool and it captures the heat released by the magnetron during operation. This heat exchange makes it possible on the one hand to cool the magnetron and then to introduce hot air into the cooking chamber 2.
  • the openings in the bottom wall 3 of the cooking chamber 2 and at the periphery of the turntable 5 allow the passage of an air flow E.
  • This air flow E is generated by the passage of the air flow incoming D passing through the magnetron and the fan.
  • the flow of air E introduced into the cooking chamber 2 is hot and makes it possible to prevent condensation occurring on the domed wall 4 and on the bottom wall 3 of the cooking chamber 2.
  • air flow E introduced into the cooking chamber 2 mixes with the release of steam due to the heating of the food placed in the cooking chamber 2, during the implementation of a heating cycle by the cooking oven microwaves 1, so as to form the air flow F.
  • said at least one sensor 9 is placed above said at least one air discharge opening 10 so that the moist and hot air flow F flows along said at least one sensor 9 so that recovering the data relating to the heating of the food placed in the cooking chamber 2 during the implementation of a heating cycle by the microwave oven 1.
  • Said at least one sensor 9 is disposed inside a housing 17 of the technical zone 8 and outside the cooking chamber 2.
  • the technical zone 8 located at the top of the wall in the form of dome 4 comprises at least one lighting device 12 diffusing light up and down in the cooking chamber 2.
  • the cooking chamber 2 is illuminated uniformly by said at least one lighting device 12 and without creating shadows in a portion of the cooking chamber 2 related to the space occupied by an article. to be heated placed in the cooking chamber 2.
  • Fixing said at least one lighting device 12 in the technical area 8 located at the top of the dome-shaped wall 4 implements conventional fastening means, for example of the type by gluing, screwing, snap elastic. These fastening means are well known to those skilled in the art and do not need to be described in more detail here.
  • the dome-shaped wall 4 of the cooking chamber 2 is made of a material adapted to diffuse the light towards the outside of the microwave oven 1.
  • the dome-shaped wall 4 of the cooking chamber 2 is made of a material that does not absorb microwaves to avoid heating thereof and that is transparent to allow the user to view the interior of the room. the cooking chamber 2.
  • the dome-shaped wall 4 of the cooking chamber 2 may be made for example of glass, or plastic such as polycarbonate or poly-methacrylate.
  • the light emitted by at least one lighting device 12 is diffused inside the cooking chamber 2 from the technical zone 8 situated at the top of the dome-shaped wall 4 and possibly also outside. of the cooking chamber 2 through the domed wall 4.
  • the user can view the light emitted inside the cooking chamber 2 while being away from the microwave oven 1 and without remaining in front of it during its operation.
  • Such a microwave oven 1 overcomes the disadvantage of current microwave cooking ovens where the user does not know the operating state of these interactively through audit at least one lighting device 12 diffusing light outside said microwave cooking oven 1 through the domed wall 4.
  • the dome-shaped wall 4 of the cooking chamber 2 encloses a wave trap.
  • the wave trap makes it possible to avoid microwave leakage outside the cooking chamber 2 and is protected by the dome-shaped wall 4 against the projections when heating food placed in the cooking chamber 2.
  • the microwaves circulating inside the cooking chamber 2 can not leak outside the microwave oven 1.
  • the domed wall 4 of the cooking chamber 2 shown in FIGS. figures 1 and 2 represents the wave trap and the transparent material positioned around said wave trap. This transparent material makes it possible to diffuse the light outside the cooking chamber 2 as well as to protect the wave trap from projections related to the heating of food.
  • the microwave oven 1 may also include an additional lighting device.
  • said at least one lighting device 12 makes it possible to combine the light emitted by the latter with that of an additional lighting device so as to increase the brightness in the cooking chamber 2.
  • said at least one lighting device 12 comprises a printed circuit board 13, said printed circuit board 13 comprising at least one light-emitting diode 14, as illustrated in FIG. figure 3 .
  • said at least one lighting device 12 makes it possible to modify the color shade and / or the light intensity simply, inexpensively and in a wide range of colors and / or intensities.
  • the number of light-emitting diodes 14 may be between one and more. Each light-emitting diode 14 may be of the same or different color.
  • the number of light-emitting diodes 14 is in no way limiting.
  • said at least one lighting device 12 comprises at least one lens 15 between said at least one light-emitting diode 14 and a lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 constituting the enclosure cooking 2.
  • the light emitted by said at least one light-emitting diode 14 from at least one lighting device 12 is directed by said at least one lens 15 towards the inside of the cooking chamber 2.
  • Said at least one lighting device 12 is disposed inside a housing 17 of the technical zone 8 and outside the cooking chamber 2.
  • the lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 constituting the cooking chamber 2 comprises at least one opening 18 allowing the passage of the light emitted by the at least one lighting device 12 inwardly of said cooking chamber 2.
  • Said at least one opening 18 of the lower wall 16 of the technical zone 8 situated at the top of the dome-shaped wall 4 constituting the cooking chamber 2 comprises a plurality of holes 19.
  • the holes 19 of said at least one opening 18 formed in the bottom wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 allow the light emitted by said at least one lighting device 12 of the to be diffused towards the inside of the cooking chamber 2 and are dimensioned so as to prevent the microwaves from coming out through said holes 19.
  • the microwave oven 1 thus has the minimum of leakages of microwave outside the cooking chamber 2.
  • Sizing the holes 19 of said at least one opening 18 is well known to those skilled in the art so as to prevent microwaves from coming out through said holes 19 and need not be described in more detail here.
  • the holes 19 of said at least one opening 18 of the lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 may be hexagonal, circular, and so on.
  • the shape of the holes 19 is in no way limiting and can be performed differently.
  • the hexagonal shape of the holes 19 of said at least one opening 18 formed in the lower wall 16 of the technical zone 8 situated at the top of the dome-shaped wall 4 can make it possible to improve the light diffusion in the direction of the interior. of the cooking chamber 2 while being dimensioned so as not to cause microwave leakage.
  • Fixing said at least one lighting device 12 in the housing 17 of the technical area 8 implements conventional fastening means, for example of the type by gluing, screwing, snap elastic. These fastening means are well known to those skilled in the art and do not need to be described in more detail here.
  • Said at least one lighting device 12, as illustrated in FIG. figure 3 may comprise a housing (not shown) in which the printed circuit board 13 and said at least one light emitting diode 14 may be housed.
  • the printed circuit board 13 of said at least one lighting device 12 is connected to the control unit of the microwave cooking oven 1 by means of a flat cable (not shown), also called dab, so supplying said at least one electroluminescent diode 14 of said at least one lighting device 12 with electrical energy.
  • the printed circuit board 13 of said at least one lighting device 12 is connected to a control unit (not shown) of the microwave oven 1, for example an electronic control card, directly or not.
  • Said at least one sensor 9 and / or said at least one lighting device 12 are supplied with electrical energy by means of at least one electrical connection passing through a hinge 20 connecting the lower wall 3 of the enclosure of cooking 2 to the dome-shaped wall 4 of said cooking chamber 2.
  • the cooking chamber 2 comprises a hinge arm 21 connecting the dome-shaped wall 4 to the bottom wall 3, and said hinge arm 21 comprising a passage housing 22 of a wired power supply connection opening in the technical area 8 at the top of the dome-shaped wall 4.
  • said at least one sensor 9 and said at least one lighting device 12 located in the housing 17 of the technical zone 8 can be supplied with electrical energy by a wire link extending inside a housing of passage 22 of the hinge arm 21 connecting the dome-shaped wall 4 to the bottom wall 3 of the cooking chamber 2.
  • the printed circuit board 13 of each lighting device 12 and said at least one sensor 9 can be connected to the control unit through a control card of a control panel, or the printed circuit board 13 of each lighting device 12 and said at least one sensor 9 can be connected to the control unit directly and the control board of the control keyboard to the control unit 13. control unit.
  • the control unit of the microwave cooking oven 1 is adapted to adjust the power level of the wavechain.
  • the control unit comprises, in known manner, a microcontroller adapted to process the information from the control card, and thus to put into operation, extinguish or adjust the power level of the waveband, and therefore to controlling the illumination of said at least one light-emitting diode 14 of the printed circuit board 13 of said at least one lighting device 12 according to the control carried out by the user of the microwave oven 1.
  • said at least one lighting device 12 illuminates the inside of the cooking chamber 2 so as to indicate this command and said at least one sensor 9 regulates the power of the wave chain so as to evenly heat the food placed in the cooking chamber 2.
  • said at least one lighting device 12 can illuminate the interior of the cooking chamber 2 so that to indicate this operating state.
  • the color shade and / or light intensity of said at least one light emitting diode 14 may vary depending on the power level required by the user.
  • a cover 23 is positioned above the dome-shaped wall 4 of the cooking chamber 2, and said cover 23 is connected to the technical zone 8 situated at the top of said dome-shaped wall 4.
  • the lid 23 is made of a material adapted to diffuse the light towards the outside of the microwave oven 1.
  • the lid 23 is made of a material that does not absorb microwaves to prevent heating thereof and is transparent to allow the user to visualize inside the cooking chamber 2.
  • the cover 23 may be made for example of glass, or plastic such as polycarbonate or poly-methacrylate.
  • the light emitted by at least one lighting device 12 is diffused inside the cooking chamber 2 and outside the cooking chamber 2 through the dome-shaped wall 4 and lid 23.
  • the user can view the light emitted inside the cooking chamber 2 while being away from the microwave oven 1 and without remaining in front of it during its operation.
  • Such a microwave oven 1 overcomes the disadvantage of current microwave cooking ovens where the user does not know the operating state of these interactively through audit at least one lighting device 12 diffusing light outside said microwave cooking oven 1 through the domed wall 4 and then the lid 23.
  • a space 24 is provided between the cover 23 and the dome-shaped wall 4 so that the intensity of the microwaves passing through said dome-shaped wall 4 is attenuated to prevent microwave leakage outside the microwave oven 1.
  • the technical zone 8 is connected to the dome-shaped wall 4 and the cover 23 so as to avoid microwave leakage at the junctions between them.
  • the technical zone 8 comprises an upper wall 27 for closing the housing 17 inside which various operating elements 9, 10, 12 of the microwave cooking oven are placed.
  • This upper wall 27 of the technical zone 8 may comprise an opening 28 so as to allow the discharge of the moist and hot air flow F outside the microwave oven 1 after this air flow. F is crossed said technical area 8.
  • This opening 28 of the upper wall 27 of the technical zone 8 can be achieved by a plurality of holes 29.
  • the upper wall 27 of the technical zone 8 can also be an integral part of the hinge arm 21 so as to simplify the production of the microwave oven 1 and improve the aesthetics of the latter.
  • the bottom wall 16 of the technical zone 8 is preferably made of a metallic material. This lower wall 16 of the technical zone 8 is fixed, for example, by welding on the dome-shaped wall 4 comprising a wave trap.
  • the wave trap of the domed wall 4 is also made of a metallic material.
  • the assembly of the lower wall 16 of the technical zone 8 with the dome-shaped wall 4 makes it possible to avoid microwave leakage outside the cooking chamber 2.
  • the lower wall 16 of the technical zone 8 comprises said at least one air discharge opening 10 and said at least one opening 18 allowing the passage of the light emitted by said at least one lighting device 12.
  • the upper part of the technical zone 8 can be made of plastic so as to be assembled with the lid 23 or be integrated into the hinge arm 21.
  • the microwave oven 1 comprises a technical zone 8 located at the top of the dome-shaped wall 4 constituting the cooking chamber 2.
  • This technical zone 8 is adapted to receive a plurality of operating elements 9, 10 , 12 of a microwave oven 1 so as to simplify the manufacture of the latter.
  • said at least one lighting device in the technical zone may comprise one or more light sources that may be of the incandescent, halogen type.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Ovens (AREA)
  • Constitution Of High-Frequency Heating (AREA)

Abstract

The oven (1) has a cooking chamber (2) comprising a dome-shaped wall (4) positioned above a lower wall (3) to define a cooking space. A technical zone (8) is located at the top of the dome-shaped wall. The technical zone has a sensor (9) that co-operates with a controller, and an air evacuation opening (10) that evacuates hot and humid air from the cooking chamber during implementation of a heating cycle by the oven. The zone has a lighting device (12) that diffuses light from top to bottom in the chamber.

Description

La présente invention concerne un four de cuisson à micro-ondes équipé d'une zone technique située au sommet d'une paroi en forme de dôme constituant une enceinte de cuisson.The present invention relates to a microwave oven equipped with a technical area located at the top of a dome-shaped wall constituting a cooking chamber.

Elle concerne de manière générale les fours de cuisson à micro-ondes domestiques comprenant une zone technique permettant de mettre en oeuvre des cycles de chauffage à l'intérieur d'une enceinte de cuisson.It relates generally to domestic microwave cooking ovens comprising a technical zone for carrying out heating cycles inside a cooking chamber.

Traditionnellement, les fours de cuisson à micro-ondes comprennent une enceinte de cuisson de forme sensiblement parallélépipédique logée à l'intérieur d'une carrosserie. L'enceinte de cuisson comprend une paroi inférieure, une paroi supérieure, une paroi de fond et deux parois latérales. Une ouverture en face frontale de l'enceinte de cuisson est obturée par une porte.Traditionally, microwave ovens comprise a substantially parallelepiped shaped cooking chamber housed inside a body. The cooking chamber comprises a bottom wall, an upper wall, a bottom wall and two side walls. An opening in front of the cooking chamber is closed by a door.

Ces fours de cuisson à micro-ondes sont généralement munis d'un dispositif d'éclairage monté sur une paroi latérale de l'enceinte de cuisson.These microwaves are generally equipped with a lighting device mounted on a side wall of the cooking chamber.

Ces fours de cuisson à micro-ondes comprennent également un dispositif de ventilation de l'enceinte de cuisson pourvu d'ouvertures de sortie d'air situées en partie arrière de la paroi supérieure de l'enceinte de cuisson et d'ouvertures d'entrée d'air situées en partie avant de la paroi supérieure de l'enceinte de cuisson au travers desquelles un flux d'air est mis en circulation par un ventilateur.These microwave ovens also comprise a ventilation device of the cooking chamber provided with air outlet openings located in the rear part of the upper wall of the cooking chamber and inlet openings. of air located in front of the upper wall of the cooking chamber through which a flow of air is circulated by a fan.

Cette circulation d'air permet de retirer l'humidité à l'intérieur de l'enceinte de cuisson, et en particulier d'éviter de la condensation sur la porte obturant l'ouverture en face frontale de l'enceinte de cuisson.This circulation of air removes moisture inside the cooking chamber, and in particular to avoid condensation on the door closing the opening on the front face of the cooking chamber.

Ces fours de cuisson peuvent également comprendre un ou plusieurs capteurs positionnés le long d'une paroi latérale ou d'une paroi supérieure de l'enceinte de cuisson et adaptés à coopérer avec un microcontrôleur de commande du four de cuisson à micro-ondes.These cooking ovens may also include one or more sensors positioned along a side wall or an upper wall of the cooking chamber and adapted to cooperate with a control microcontroller of the microwave oven.

Cependant, ces fours de cuisson à micro-ondes présentent l'inconvénient de disposer d'éléments de fonctionnement situés à des emplacements différents de l'enceinte de cuisson.However, these microwave ovens have the disadvantage of having operating elements located at different locations of the cooking chamber.

Par conséquent, le coût d'obtention de ces fours de cuisson à micro-ondes est onéreux puisque des aménagements sont adaptés pour chaque élément de fonctionnement nécessitant des opérations de fabrication associées à l'assemblage de chaque élément de fonctionnement de ces fours de cuisson à micro-ondes.Therefore, the cost of obtaining these microwave ovens is expensive since arrangements are adapted for each operating element requiring manufacturing operations associated with the assembly of each operating element of these kilns. microwave.

En outre, des câbles d'alimentation électriques sont acheminés vers différents éléments de fonctionnement du four de cuisson à micro-ondes engendrant un surcoût par la démultiplication du nombre de câbles d'alimentation électriques et par la complexité du passage des câbles d'alimentation électrique en différents points entre l'enceinte de cuisson et la carrosserie du four de cuisson à micro-ondes.In addition, electrical power cables are routed to different operating elements of the microwave oven generating additional cost by reducing the number of power supply cables and the complexity of the passage of power supply cables. at different points between the cooking chamber and the body of the microwave oven.

On connaît également le document US 2 993 973 A qui décrit un four de cuisson à micro-ondes sur lequel une plaque de support, en matériau transparent à l'énergie micro-onde, est disposée horizontalement dans une ouverture ménagée dans un plan de travail. Une paroi en forme de dôme est adaptée à recouvrir la plaque et à définir avec celle-ci une chambre de cuisson au-dessus de la plaque. Ce four de cuisson comprend une séparation disposée horizontalement dans la partie supérieure du dôme, séparant l'intérieur de celui-ci à l'intérieur de la cavité de cuisson et un compartiment de lampe. La lampe est utilisée à l'intérieur du compartiment et illuminée par la présence d'énergie micro-onde en faible quantité. La séparation comprend une pluralité d'ouvertures pour le passage au travers de celles-ci d'une quantité limitée d'énergie micro-onde depuis la chambre de cuisson vers le compartiment de lampe pour permettre l'illumination de la lampe. Les ouvertures permettent également le passage de lumière depuis la lampe illuminée vers l'intérieur de la chambre de cuisson. La paroi définissant le compartiment de lampe peut également comprendre une pluralité d'ouvertures permettant à la lampe d'être observée depuis l'extérieur du compartiment de lampe. En outre, le dôme est pourvu d'un motif de perforations, étant assez larges pour permettre la visualisation de l'intérieur de la chambre de cuisson et suffisamment petites pour éviter une fuite micro-ondes au travers de celles-ci.The document is also known US 2,993,973 A which describes a microwave cooking oven on which a support plate, made of a material transparent to microwave energy, is disposed horizontally in an opening in a work plane. A dome-shaped wall is adapted to cover the plate and define therewith a cooking chamber above the plate. The baking oven includes a partition disposed horizontally in the upper portion of the dome, separating the interior thereof from the interior of the baking cavity and a lamp compartment. The lamp is used inside the compartment and illuminated by the presence of microwave energy in small quantities. The partition includes a plurality of openings for passage therethrough of a limited amount of microwave energy from the cooking chamber to the lamp compartment to allow illumination of the lamp. The openings also allow the passage of light from the illuminated lamp to the interior of the cooking chamber. The wall defining the lamp compartment may also include a plurality of openings allowing the lamp to be viewed from outside the lamp compartment. In addition, the dome is provided with a pattern of perforations, being wide enough to allow viewing of the interior of the cooking chamber and small enough to prevent microwave leakage through them.

La présente invention a pour but de résoudre les inconvénients précités et de proposer un four de cuisson à micro-ondes permettant de diminuer le coût d'obtention de ce dernier tout en ayant des performances de fonctionnement au moins égales à celles d'un four de cuisson à micro-ondes classique.The present invention aims to solve the aforementioned drawbacks and to provide a microwave cooking oven to reduce the cost of obtaining the latter while having operating performance at least equal to that of a furnace of conventional microwave cooking.

A cet effet, la présente invention vise un four de cuisson à micro-ondes comprenant une enceinte de cuisson, ladite enceinte de cuisson comprenant une paroi inférieure et une paroi en forme de dôme, ladite paroi en forme de dôme se positionnant au-dessus de ladite paroi inférieure de sorte à définir un espace de cuisson, et ladite paroi en forme de dôme comprenant une zone technique située au sommet de ladite paroi en forme de dôme.For this purpose, the present invention relates to a microwave oven comprising a cooking chamber, said cooking chamber comprising a bottom wall and a dome-shaped wall, said dome-shaped wall being positioned above the cooking chamber. said bottom wall so as to define a cooking space, and said dome-shaped wall comprising a technical area located at the top of said dome-shaped wall.

Selon l'invention, ladite paroi en forme de dôme est pleine, et ladite zone technique située au sommet de ladite paroi en forme de dôme comprend au moins une ouverture d'évacuation d'air évacuant au moins une partie de l'air humide et chaud de ladite enceinte de cuisson au cours de la mise en oeuvre d'un cycle de chauffage par ledit four de cuisson à micro-ondes.According to the invention, said dome-shaped wall is solid, and said technical zone situated at the top of said dome-shaped wall comprises at least one air discharge opening discharging at least part of the humid air and hot said cooking chamber during the implementation of a heating cycle by said microwave cooking oven.

Ainsi, le four de cuisson à micro-ondes comprend une zone technique située au sommet d'une paroi en forme de dôme constituant l'enceinte de cuisson. Cette zone technique est adaptée à recevoir plusieurs éléments de fonctionnement d'un four de cuisson à micro-ondes de sorte à simplifier la fabrication de ce dernier.Thus, the microwave oven comprises a technical zone located at the top of a dome-shaped wall constituting the cooking chamber. This technical area is adapted to receive several operating elements of a microwave oven so as to simplify the manufacture of the latter.

Ladite zone technique peut ainsi être modulaire de sorte à recevoir différents éléments de fonctionnement du four de cuisson à micro-ondes ou non en fonction du modèle de four de cuisson à micro-ondes.Said technical zone can thus be modular so as to receive different operating elements of the microwave oven or not depending on the model of microwave oven.

Le positionnement des éléments de fonctionnement au sommet de la paroi en forme de dôme permet d'optimiser le fonctionnement de ces derniers.The positioning of the operating elements at the top of the dome-shaped wall makes it possible to optimize the operation of the latter.

En outre, ladite au moins une ouverture d'évacuation d'air de la zone technique située au sommet de la paroi en forme de dôme permet d'évacuer de l'air humide et chaud au cours d'un cycle de chauffage mis en oeuvre par le four de cuisson à micro-ondes telle qu'une cheminée.In addition, said at least one air evacuation opening in the technical zone situated at the top of the dome-shaped wall makes it possible to evacuate hot moist air during a heating cycle implemented. by the microwave oven such as a fireplace.

Un flux d'air humide et chaud provenant de l'enceinte de cuisson peut ainsi être évacué à l'extérieur du four de cuisson à micro-ondes au travers de ladite au moins une ouverture d'évacuation d'air de la zone technique située au sommet de la paroi en forme de dôme de sorte à éviter que de la condensation se forme sur ladite paroi en forme de dôme constituant l'enceinte de cuisson.A humid and hot air flow from the cooking chamber can thus be evacuated outside the microwave oven through said at least one air evacuation opening of the technical zone located at the top of the dome-shaped wall so as to prevent condensation from forming on said dome-shaped wall constituting the cooking chamber.

Le flux d'air humide et chaud provenant de l'enceinte de cuisson peut être du type par convection naturelle ou par convection forcée au moyen d'un ventilateur soufflant de l'air à l'intérieur de l'enceinte de cuisson.The moist and hot air flow from the cooking chamber may be of the natural convection type or by forced convection by means of a fan blowing air inside the cooking chamber.

Selon une caractéristique préférée de l'invention, ladite zone technique située au sommet de ladite paroi en forme de dôme comprend au moins un capteur coopérant avec un contrôleur dudit four de cuisson à micro-ondes au cours de la mise en oeuvre d'un cycle de chauffage par ledit four de cuisson à micro-ondes.According to a preferred feature of the invention, said technical zone located at the top of said dome-shaped wall comprises at least one sensor cooperating with a controller of said microwave oven during the implementation of a cycle. heating by said microwave cooking oven.

Ainsi, ledit au moins un capteur de la zone technique située au sommet de la paroi en forme de dôme permet d'asservir le fonctionnement du four de cuisson à micro-ondes par la communication entre ledit au moins un capteur et un contrôleur dudit four de cuisson à micro-ondes.Thus, said at least one sensor in the technical zone situated at the top of the dome-shaped wall makes it possible to control the operation of the microwave cooking oven by the communication between said at least one sensor and a controller of said microwave oven. microwave cooking.

Le positionnement dudit au moins un capteur de la zone technique au sommet de la paroi en forme de dôme permet de recueillir aisément des données fiables concernant le ou les aliments placés à l'intérieur de l'enceinte de cuisson, puis d'optimiser le fonctionnement du four de cuisson à micro-ondes à partir de ces données.The positioning of the at least one sensor in the technical zone at the top of the dome-shaped wall makes it easy to collect reliable data concerning the food or foods placed inside the cooking chamber and then to optimize the operation. of the microwave oven from these data.

Selon une autre caractéristique préférée de l'invention, ladite zone technique située au sommet de ladite paroi en forme de dôme comprend au moins un dispositif d'éclairage diffusant de la lumière de haut en bas dans ladite enceinte de cuisson.According to another preferred feature of the invention, said technical zone located at the top of said dome-shaped wall comprises at least one lighting device diffusing light up and down in said cooking chamber.

Ainsi, l'enceinte de cuisson est éclairée de manière uniforme par ledit au moins un dispositif d'éclairage et sans créer de zones d'ombres dans une partie de l'enceinte de cuisson liée à l'encombrement occupé par un article à chauffer placé dans l'enceinte de cuisson.Thus, the cooking chamber is uniformly illuminated by said at least one lighting device and without creating shadows in a portion of the cooking chamber related to the space occupied by an article to be heated placed in the cooking chamber.

D'autres particularités et avantages de l'invention apparaîtront encore dans la description ci-après.Other features and advantages of the invention will become apparent in the description below.

Aux dessins annexés, donnés à titre d'exemples non limitatifs:

  • la figure 1 est une vue en coupe d'un four de cuisson à micro-ondes conforme à l'invention ;
  • la figure 2 est une de dessus d'un four de cuisson à micro-ondes conforme à l'invention, un bras d'articulation d'un couvercle ayant été ôté ; et
  • la figure 3 est une vue de détail A de la figure 1.
In the accompanying drawings, given as non-limiting examples:
  • the figure 1 is a sectional view of a microwave cooking oven according to the invention;
  • the figure 2 is a top of a microwave oven according to the invention, a hinge arm of a lid having been removed; and
  • the figure 3 is a detail view A of the figure 1 .

On va décrire en référence aux figures 1 à 3 un four de cuisson à micro-ondes adapté à mettre en oeuvre la présente invention.We will describe with reference to Figures 1 to 3 a microwave cooking oven adapted to implement the present invention.

Un four de cuisson à micro-ondes 1 comprend une enceinte de cuisson 2.A microwave oven 1 comprises a cooking chamber 2.

L'enceinte de cuisson 2 comprend une paroi inférieure 3 et une paroi en forme de dôme 4.The cooking chamber 2 comprises a bottom wall 3 and a dome-shaped wall 4.

La paroi en forme de dôme 4 se positionne au-dessus de la paroi inférieure 3 de sorte à définir un espace de cuisson.The dome-shaped wall 4 is positioned above the bottom wall 3 so as to define a cooking space.

Afin d'alimenter en énergie haute fréquence l'enceinte de cuisson 2 d'un four de cuisson à micro-ondes 1, il est prévu de manière classique un magnétron, dont une antenne débouche dans un guide d'ondes formé contre une paroi de l'enceinte de cuisson 2.In order to supply high frequency energy to the cooking chamber 2 of a microwave cooking oven 1, a magnetron is conventionally provided, of which an antenna opens into a waveguide formed against a wall of the cooking chamber 2.

Le four de cuisson à micro-ondes 1 peut également comprendre un ou plusieurs éléments chauffants, notamment des éléments chauffants radiants du type résistances électriques. La présence de cet ou ces éléments chauffants dans le four de cuisson à micro-ondes 1 permet ainsi d'ajouter une fonction de cuisson traditionnelle.The microwave oven 1 may also include one or more heating elements, including radiant heating elements of the electric heater type. The presence of this or these heating elements in the microwave oven 1 thus allows to add a traditional cooking function.

On notera aussi que les figures sont schématiques et que de nombreux organes nécessaires au fonctionnement du four de cuisson à micro-ondes, par exemple les moyens de chauffage, les moyens de ventilation, ... ont été omis et n'ont pas besoin d'être décrits en détail ici.Note also that the figures are diagrammatic and that many organs necessary for the operation of the microwave oven, for example the heating means, the ventilation means, ... have been omitted and do not need to to be described in detail here.

L'enceinte de cuisson 2 comprend un plateau 5 logé dans au moins un enfoncement 6 de la paroi inférieure 3.The cooking chamber 2 comprises a plate 5 housed in at least one depression 6 of the bottom wall 3.

Le plateau 5 peut être un plateau tournant monté en rotation sur un axe 7 entraîné par un moteur (non représenté) ou encore un encore plateau fixe installé dans ledit au moins un enfoncement 6 de la paroi inférieure 3.The plate 5 may be a rotating plate rotatably mounted on an axis 7 driven by a motor (not shown) or a still plate installed in said at least one recess 6 of the bottom wall 3.

Le volume utile de l'enceinte de cuisson 2 défini par la paroi inférieure 3 et la paroi en forme de dôme 4 est réduit de sorte à limiter les zones de ladite enceinte de cuisson 2 inutiles lors du chauffage d'un aliment à chauffer posé sur un plateau 5.The useful volume of the cooking chamber 2 defined by the bottom wall 3 and the dome-shaped wall 4 is reduced so as to limit the areas of said cooking chamber 2 that are unnecessary during the heating of a food to be heated placed on a tray 5.

La paroi en forme de dôme 4 comprend une zone technique 8 située au sommet de la paroi en forme de dôme 4.The dome-shaped wall 4 comprises a technical zone 8 situated at the top of the dome-shaped wall 4.

Ainsi, le four de cuisson à micro-ondes 1 comprend une zone technique 8 située au sommet d'une paroi en forme de dôme 4 constituant l'enceinte de cuisson 2. Cette zone technique 8 est adaptée à recevoir plusieurs éléments de fonctionnement 9, 10, 12 d'un four de cuisson à micro-ondes 1 de sorte à simplifier la fabrication de ce dernier.Thus, the microwave oven 1 comprises a technical zone 8 located at the top of a dome-shaped wall 4 constituting the cooking chamber 2. This technical zone 8 is adapted to receive a plurality of operating elements 9, 10, 12 of a microwave oven 1 so as to simplify the manufacture of the latter.

Ladite zone technique 8 peut ainsi être modulaire de sorte à recevoir différents éléments de fonctionnement 9, 10, 12 du four de cuisson à micro-ondes 1 ou non en fonction du modèle de four de cuisson à micro-ondes.Said technical zone 8 can thus be modular so as to receive different operating elements 9, 10, 12 of the microwave oven 1 or not depending on the microwave oven model.

Avantageusement, la zone technique 8 située au sommet de la paroi en forme de dôme 4 comprend au moins un capteur 9 coopérant avec un contrôleur (non représenté) du four de cuisson à micro-ondes 1 au cours de la mise en oeuvre d'un cycle de chauffage par ledit four de cuisson à micro-ondes 1.Advantageously, the technical zone 8 located at the top of the dome-shaped wall 4 comprises at least one sensor 9 cooperating with a controller (not shown) of the microwave oven 1 during the implementation of a heating cycle by said microwave cooking oven 1.

Ainsi, ledit au moins un capteur 9 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 permet d'asservir le fonctionnement du four de cuisson à micro-ondes 1 par la communication entre ledit au moins un capteur 9 et un contrôleur du four de cuisson à micro-ondes 1.Thus, said at least one sensor 9 of the technical zone 8 located at the top of the dome-shaped wall 4 makes it possible to control the operation of the microwave cooking oven 1 by the communication between said at least one sensor 9 and a controller of the microwave oven 1.

Ledit au moins un capteur 9 peut être, en particulier, un capteur d'humidité permettant de réguler l'alimentation en énergie micro-ondes en fonction des données recueillies par celui-ci et transmises à un contrôleur du four de cuisson à micro-ondes 1.Said at least one sensor 9 may be, in particular, a humidity sensor for regulating the microwave energy supply according to the data collected by it and transmitted to a controller of the microwave oven 1.

Le capteur d'humidité 9 permet de recueillir des données liées à la vapeur d'eau dégagée par les aliments placés à l'intérieur de l'enceinte de cuisson 2 au cours d'un cycle de chauffage de sorte à asservir les périodes de fonctionnement du magnétron au moyen du contrôleur commandant le four de cuisson à micro-ondes 1.The humidity sensor 9 collects data related to the water vapor released by the food placed inside the cooking chamber 2 during a heating cycle so as to slave the operating periods. magnetron using the controller controlling the microwave oven 1.

Ledit au moins un capteur 9 peut être également un capteur de température permettant de réguler l'alimentation en énergie micro-ondes en fonction des données recueillies par celui-ci et transmises à un contrôleur du four de cuisson à micro-ondes 1, ou encore un capteur de mesure de distance du type à ultrasons permettant de déterminer la taille et le nombre de récipients contenant les aliments placés dans l'enceinte de cuisson 2.Said at least one sensor 9 can also be a temperature sensor for regulating the microwave energy supply according to the data collected by it and transmitted to a controller of the microwave oven 1, or an ultrasonic type distance measuring sensor for determining the size and number of containers containing the food placed in the cooking chamber 2.

La zone technique 8 peut également comprendre plusieurs capteurs 9, et par exemple la combinaison d'un capteur d'humidité et d'un capteur de température.The technical zone 8 can also comprise several sensors 9, and for example the combination of a humidity sensor and a temperature sensor.

Bien entendu, le nombre et le type de capteur 9 n'est nullement limitatif et peut être différent.Of course, the number and type of sensor 9 is in no way limiting and may be different.

Avantageusement, la zone technique 8 située au sommet de la paroi en forme de dôme 4 comprend au moins une ouverture d'évacuation d'air 10 évacuant au moins une partie de l'air humide et chaud de l'enceinte de cuisson 2 au cours de la mise en oeuvre d'un cycle de chauffage par le four de cuisson à micro-ondes 1.Advantageously, the technical zone 8 located at the top of the domed wall 4 comprises at least one air evacuation opening 10 discharging at least a portion of the moist and hot air from the cooking chamber 2 during the implementation of a heating cycle by the microwave oven 1.

Ainsi, ladite au moins une ouverture d'évacuation d'air 10 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 permet d'évacuer de l'air humide et chaud au cours d'un cycle de chauffage mis en oeuvre par le four de cuisson à micro-ondes 1 telle qu'une cheminée.Thus, said at least one air evacuation opening 10 of the technical zone 8 located at the top of the dome-shaped wall 4 makes it possible to evacuate hot moist air during a heating cycle. implemented by the microwave oven 1 such as a fireplace.

Un flux d'air F humide et chaud provenant de l'enceinte de cuisson 2 peut ainsi être évacué à l'extérieur du four de cuisson à micro-ondes 1 au travers de ladite au moins une ouverture d'évacuation d'air 10 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 de sorte à éviter que de la condensation se forme sur ladite paroi en forme de dôme 4 constituant l'enceinte de cuisson 2.A moist and hot air flow F from the cooking chamber 2 can thus be evacuated outside the microwave oven 1 through said at least one air outlet opening 10. the technical zone 8 situated at the top of the dome-shaped wall 4 so as to prevent condensation from forming on said dome-shaped wall 4 constituting the cooking chamber 2.

Le flux d'air F humide et chaud provenant de l'enceinte de cuisson 2 peut être du type par convection naturelle ou par convection forcée au moyen d'un ventilateur (non représenté) soufflant de l'air à l'intérieur de l'enceinte de cuisson 2.The flow of moist and hot air F from the cooking chamber 2 may be of the natural convection or forced convection type by means of a fan (not shown) blowing air inside the cooking chamber 2.

Ladite au moins une ouverture d'évacuation d'air 10 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 comprend une pluralité de trous 11.Said at least one air discharge opening 10 of the technical zone 8 located at the top of the dome-shaped wall 4 comprises a plurality of holes 11.

Ainsi, les trous 11 de ladite au moins une ouverture d'évacuation d'air 10 ménagés dans la zone technique 8 située au sommet de la paroi en forme de dôme 4 de l'enceinte de cuisson 2 permettent au flux d'air F humide et chaud d'être évacué en dehors de l'enceinte de cuisson 2 et sont dimensionnés de sorte à empêcher les micro-ondes de sortir par lesdits trous 11. Le four de cuisson à micro-ondes 1 présente ainsi le minimum de fuites de micro-ondes à l'extérieur de l'enceinte de cuisson 2.Thus, the holes 11 of said at least one air discharge opening 10 formed in the technical area 8 located at the top of the dome-shaped wall 4 of the cooking chamber 2 allow the flow of air F wet and hot to be discharged outside the cooking chamber 2 and are dimensioned so as to prevent microwaves out through said holes 11. The microwave oven 1 thus has the minimum microwave leakage outside the cooking chamber 2.

Le dimensionnement des trous 11 de ladite au moins une ouverture d'évacuation d'air 10 est bien connu de l'homme du métier de sorte à empêcher les micro-ondes de sortir par lesdits trous 11 et n'a pas besoin d'être décrit plus en détail ici.The sizing of the holes 11 of the at least one air evacuation opening 10 is well known to those skilled in the art so as to prevent microwaves from coming out through said holes 11 and need not be described in more detail here.

Dans un mode de réalisation de l'invention illustré à la figure 1, le flux d'air F est généré par un ventilateur (non représenté) aspirant de l'air à l'extérieur du four de cuisson à micro-ondes 1 au travers d'une ouverture 25 située dans une paroi 26 constituant la structure dudit four de cuisson à micro-ondes 1, et soufflant de l'air à l'intérieur de l'enceinte de cuisson 2 au travers d'ouvertures (non représentées) ménagées dans la paroi inférieure 3 et en périphérie du plateau tournant 5.In one embodiment of the invention illustrated in figure 1 , the air flow F is generated by a fan (not shown) sucking air outside the microwave cooking oven 1 through an opening 25 in a wall 26 constituting the structure of said microwave oven 1, and blowing air inside the cooking chamber 2 through openings (not shown) formed in the bottom wall 3 and the periphery of the turntable 5.

L'ouverture 25 située dans la paroi 26 constituant la structure du four de cuisson à micro-ondes 1 peut être réalisée sous la forme d'une grille perforée de sorte à permettre le passage d'un flux d'air entrant D.The opening 25 located in the wall 26 constituting the structure of the microwave oven 1 can be made in the form of a perforated grid so as to allow the passage of an incoming air flow D.

Ce flux d'air entrant D est réchauffé par son passage à proximité du magnétron (non représenté) générant l'énergie micro-ondes nécessaire au chauffage des aliments placés dans l'enceinte de cuisson 2. Le flux d'air entrant D aspiré à l'extérieur du four de cuisson à micro-ondes 1 est frais puis celui-ci capte la chaleur dégagée par le magnétron lors de son fonctionnement. Cet échange thermique permet d'une part de refroidir le magnétron puis d'introduire de l'air chaud dans l'enceinte de cuisson 2.This incoming air flow D is heated by passing close to the magnetron (not shown) generating the microwave energy necessary for heating food placed in the cooking chamber 2. The incoming air flow D sucked to the outside of the microwave oven 1 is cool and it captures the heat released by the magnetron during operation. This heat exchange makes it possible on the one hand to cool the magnetron and then to introduce hot air into the cooking chamber 2.

Les ouvertures ménagées dans la paroi inférieure 3 de l'enceinte de cuisson 2 et en périphérie du plateau tournant 5 permettent le passage d'un flux d'air E. Ce flux d'air E est engendré par le passage du flux d'air entrant D passant au travers du magnétron et du ventilateur.The openings in the bottom wall 3 of the cooking chamber 2 and at the periphery of the turntable 5 allow the passage of an air flow E. This air flow E is generated by the passage of the air flow incoming D passing through the magnetron and the fan.

Le flux d'air E introduit dans l'enceinte de cuisson 2 est chaud et permet d'éviter que de la condensation se produise sur la paroi en forme de dôme 4 et sur la paroi inférieure 3 de l'enceinte de cuisson 2. Le flux d'air E introduit dans l'enceinte de cuisson 2 se mélange au dégagement de vapeur dû au chauffage des aliments placés dans l'enceinte de cuisson 2, lors de la mise en oeuvre d'un cycle de chauffage par le four de cuisson à micro-ondes 1, de sorte à former le flux d'air F.The flow of air E introduced into the cooking chamber 2 is hot and makes it possible to prevent condensation occurring on the domed wall 4 and on the bottom wall 3 of the cooking chamber 2. air flow E introduced into the cooking chamber 2 mixes with the release of steam due to the heating of the food placed in the cooking chamber 2, during the implementation of a heating cycle by the cooking oven microwaves 1, so as to form the air flow F.

Préférentiellement, ledit au moins un capteur 9 est placé au-dessus de ladite au moins une ouverture d'évacuation d'air 10 de sorte que le flux d'air F humide et chaud circule le long dudit au moins un capteur 9 de sorte à récupérer les données concernant le chauffage des aliments placés dans l'enceinte de cuisson 2 lors de la mise en oeuvre d'un cycle de chauffage par le four de cuisson à micro-ondes 1.Preferably, said at least one sensor 9 is placed above said at least one air discharge opening 10 so that the moist and hot air flow F flows along said at least one sensor 9 so that recovering the data relating to the heating of the food placed in the cooking chamber 2 during the implementation of a heating cycle by the microwave oven 1.

Ledit au moins un capteur 9 est disposé à l'intérieur d'un logement 17 de la zone technique 8 et à l'extérieur de l'enceinte de cuisson 2.Said at least one sensor 9 is disposed inside a housing 17 of the technical zone 8 and outside the cooking chamber 2.

Avantageusement, la zone technique 8 située au sommet de la paroi en forme de dôme 4 comprend au moins un dispositif d'éclairage 12 diffusant de la lumière de haut en bas dans l'enceinte de cuisson 2.Advantageously, the technical zone 8 located at the top of the wall in the form of dome 4 comprises at least one lighting device 12 diffusing light up and down in the cooking chamber 2.

Ainsi, l'enceinte de cuisson 2 est éclairée de manière uniforme par ledit au moins un dispositif d'éclairage 12 et sans créer de zones d'ombres dans une partie de l'enceinte de cuisson 2 liée à l'encombrement occupé par un article à chauffer placé dans l'enceinte de cuisson 2.Thus, the cooking chamber 2 is illuminated uniformly by said at least one lighting device 12 and without creating shadows in a portion of the cooking chamber 2 related to the space occupied by an article. to be heated placed in the cooking chamber 2.

La fixation dudit au moins un dispositif d'éclairage 12 dans la zone technique 8 située au sommet de la paroi en forme de dôme 4 met en oeuvre des moyens de fixation classiques, par exemple du type par collage, vissage, encliquetage élastique. Ces moyens de fixations sont bien connus de l'homme du métier et n'ont pas besoin d'être décrits plus en détail ici.Fixing said at least one lighting device 12 in the technical area 8 located at the top of the dome-shaped wall 4 implements conventional fastening means, for example of the type by gluing, screwing, snap elastic. These fastening means are well known to those skilled in the art and do not need to be described in more detail here.

Avantageusement, la paroi en forme de dôme 4 de l'enceinte de cuisson 2 est réalisée dans un matériau adapté à diffuser la lumière vers l'extérieur du four de cuisson à micro-ondes 1.Advantageously, the dome-shaped wall 4 of the cooking chamber 2 is made of a material adapted to diffuse the light towards the outside of the microwave oven 1.

La paroi en forme de dôme 4 de l'enceinte de cuisson 2 est réalisée dans un matériau n'absorbant pas les micro-ondes pour éviter un échauffement de celle-ci et transparente pour permettre à l'utilisateur de visualiser à l'intérieur de l'enceinte de cuisson 2.The dome-shaped wall 4 of the cooking chamber 2 is made of a material that does not absorb microwaves to avoid heating thereof and that is transparent to allow the user to view the interior of the room. the cooking chamber 2.

La paroi en forme de dôme 4 de l'enceinte de cuisson 2 peut être réalisée par exemple en verre, ou en matière plastique telle que du polycarbonate ou du poly-méthacrylate.The dome-shaped wall 4 of the cooking chamber 2 may be made for example of glass, or plastic such as polycarbonate or poly-methacrylate.

Ainsi, la lumière émise par au moins un dispositif d'éclairage 12 est diffusée à l'intérieur de l'enceinte de cuisson 2 depuis la zone technique 8 située au sommet de la paroi en forme de dôme 4 et éventuellement aussi à l'extérieur de l'enceinte de cuisson 2 au travers de la paroi en forme de dôme 4.Thus, the light emitted by at least one lighting device 12 is diffused inside the cooking chamber 2 from the technical zone 8 situated at the top of the dome-shaped wall 4 and possibly also outside. of the cooking chamber 2 through the domed wall 4.

De cette manière, l'utilisateur peut visualiser la lumière émise à l'intérieur de l'enceinte de cuisson 2 en étant à distance du four de cuisson à micro-ondes 1 et sans rester en face de celui-ci lors de son fonctionnement.In this way, the user can view the light emitted inside the cooking chamber 2 while being away from the microwave oven 1 and without remaining in front of it during its operation.

Un tel four de cuisson à micro-ondes 1 permet de pallier à l'inconvénient des fours de cuisson à micro-ondes actuels où l'utilisateur ne connaît pas l'état de fonctionnement de ceux-ci de manière interactive grâce audit au moins un dispositif d'éclairage 12 diffusant de la lumière à l'extérieur dudit four de cuisson à micro-ondes 1 au travers de la paroi en forme de dôme 4.Such a microwave oven 1 overcomes the disadvantage of current microwave cooking ovens where the user does not know the operating state of these interactively through audit at least one lighting device 12 diffusing light outside said microwave cooking oven 1 through the domed wall 4.

La paroi en forme de dôme 4 de l'enceinte de cuisson 2 enferme un piège à ondes.The dome-shaped wall 4 of the cooking chamber 2 encloses a wave trap.

Ainsi, le piège à ondes permet d'éviter des fuites micro-ondes en dehors de l'enceinte de cuisson 2 et est protégé par la paroi en forme de dôme 4 contre les projections lors du chauffage d'aliments placés dans l'enceinte de cuisson 2.Thus, the wave trap makes it possible to avoid microwave leakage outside the cooking chamber 2 and is protected by the dome-shaped wall 4 against the projections when heating food placed in the cooking chamber 2.

Les micro-ondes circulant à l'intérieur de l'enceinte de cuisson 2 ne peuvent pas fuir à l'extérieur du four de cuisson à micro-ondes 1.The microwaves circulating inside the cooking chamber 2 can not leak outside the microwave oven 1.

La paroi en forme de dôme 4 de l'enceinte de cuisson 2 représentée aux figures 1 et 2 représente le piège à ondes et le matériau transparent positionné autour dudit piège à ondes. Ce matériau transparent permet de diffuser la lumière à l'extérieur de l'enceinte de cuisson 2 ainsi que de protéger le piège à ondes des projections liées au chauffage d'aliments.The domed wall 4 of the cooking chamber 2 shown in FIGS. figures 1 and 2 represents the wave trap and the transparent material positioned around said wave trap. This transparent material makes it possible to diffuse the light outside the cooking chamber 2 as well as to protect the wave trap from projections related to the heating of food.

Le four de cuisson à micro-ondes 1 peut également comprendre un dispositif d'éclairage additionnel.The microwave oven 1 may also include an additional lighting device.

Ainsi, ledit au moins un dispositif d'éclairage 12 permet de combiner la lumière émise par ce dernier avec celle d'un dispositif d'éclairage additionnel de sorte à augmenter la luminosité dans l'enceinte de cuisson 2.Thus, said at least one lighting device 12 makes it possible to combine the light emitted by the latter with that of an additional lighting device so as to increase the brightness in the cooking chamber 2.

Pratiquement, ledit au moins un dispositif d'éclairage 12 comprend une plaquette de circuit imprimé 13, ladite plaquette de circuit imprimé 13 comprenant au moins une diode électroluminescente 14, tel qu'illustré à la figure 3.In practice, said at least one lighting device 12 comprises a printed circuit board 13, said printed circuit board 13 comprising at least one light-emitting diode 14, as illustrated in FIG. figure 3 .

Ainsi, ledit au moins un dispositif d'éclairage 12 permet de modifier la nuance de couleur et/ou l'intensité lumineuse de manière simple, peu onéreuse et dans une large plage de couleur et/ou d'intensité.Thus, said at least one lighting device 12 makes it possible to modify the color shade and / or the light intensity simply, inexpensively and in a wide range of colors and / or intensities.

Le nombre de diodes électroluminescentes 14 peut être compris entre une et plusieurs. Chaque diode électroluminescente 14 peut être d'une couleur identique ou différente.The number of light-emitting diodes 14 may be between one and more. Each light-emitting diode 14 may be of the same or different color.

Bien entendu, le nombre de diodes électroluminescentes 14 n'est nullement limitatif.Of course, the number of light-emitting diodes 14 is in no way limiting.

Avantageusement, ledit au moins un dispositif d'éclairage 12 comprend au moins une lentille 15 entre ladite au moins une diode électroluminescente 14 et une paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 constituant l'enceinte de cuisson 2.Advantageously, said at least one lighting device 12 comprises at least one lens 15 between said at least one light-emitting diode 14 and a lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 constituting the enclosure cooking 2.

Ainsi, la lumière émise par ladite au moins une diode électroluminescente 14 d'au moins un dispositif d'éclairage 12 est dirigée par ladite au moins une lentille 15 en direction de l'intérieur de l'enceinte de cuisson 2.Thus, the light emitted by said at least one light-emitting diode 14 from at least one lighting device 12 is directed by said at least one lens 15 towards the inside of the cooking chamber 2.

Ledit au moins un dispositif d'éclairage 12 est disposé à l'intérieur d'un logement 17 de la zone technique 8 et à l'extérieur de l'enceinte de cuisson 2.Said at least one lighting device 12 is disposed inside a housing 17 of the technical zone 8 and outside the cooking chamber 2.

La paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 constituant l'enceinte de cuisson 2 comprend au moins une ouverture 18 permettant le passage de la lumière émise par ledit au moins un dispositif d'éclairage 12 vers l'intérieur de ladite enceinte de cuisson 2.The lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 constituting the cooking chamber 2 comprises at least one opening 18 allowing the passage of the light emitted by the at least one lighting device 12 inwardly of said cooking chamber 2.

Ladite au moins une ouverture 18 de la paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 constituant l'enceinte de cuisson 2 comprend une pluralité de trous 19.Said at least one opening 18 of the lower wall 16 of the technical zone 8 situated at the top of the dome-shaped wall 4 constituting the cooking chamber 2 comprises a plurality of holes 19.

Ainsi, les trous 19 de ladite au moins une ouverture 18 ménagés dans la paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 permettent à la lumière émise par ledit au moins un dispositif d'éclairage 12 d'être diffusée en direction de l'intérieur de l'enceinte de cuisson 2 et sont dimensionnés de sorte à empêcher les micro-ondes de sortir par lesdits trous 19. Le four de cuisson à micro-ondes 1 présente ainsi le minimum de fuites de micro-ondes à l'extérieur de l'enceinte de cuisson 2.Thus, the holes 19 of said at least one opening 18 formed in the bottom wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 allow the light emitted by said at least one lighting device 12 of the to be diffused towards the inside of the cooking chamber 2 and are dimensioned so as to prevent the microwaves from coming out through said holes 19. The microwave oven 1 thus has the minimum of leakages of microwave outside the cooking chamber 2.

Le dimensionnement des trous 19 de ladite au moins une ouverture 18 est bien connu de l'homme du métier de sorte à empêcher les micro-ondes de sortir par lesdits trous 19 et n'a pas besoin d'être décrit plus en détail ici.Sizing the holes 19 of said at least one opening 18 is well known to those skilled in the art so as to prevent microwaves from coming out through said holes 19 and need not be described in more detail here.

Les trous 19 de ladite au moins une ouverture 18 de la paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 peuvent être de forme hexagonale, circulaire, etc.The holes 19 of said at least one opening 18 of the lower wall 16 of the technical zone 8 located at the top of the dome-shaped wall 4 may be hexagonal, circular, and so on.

Bien entendu, la forme des trous 19 n'est nullement limitative et peut être réalisée de manière différente.Of course, the shape of the holes 19 is in no way limiting and can be performed differently.

La forme hexagonale des trous 19 de ladite au moins une ouverture 18 ménagés dans la paroi inférieure 16 de la zone technique 8 située au sommet de la paroi en forme de dôme 4 peut permettre d'améliorer la diffusion de lumière en direction de l'intérieur de l'enceinte de cuisson 2 tout en étant dimensionnés de sorte à ne pas provoquer de fuites micro-ondes.The hexagonal shape of the holes 19 of said at least one opening 18 formed in the lower wall 16 of the technical zone 8 situated at the top of the dome-shaped wall 4 can make it possible to improve the light diffusion in the direction of the interior. of the cooking chamber 2 while being dimensioned so as not to cause microwave leakage.

La fixation dudit au moins un dispositif d'éclairage 12 dans le logement 17 de la zone technique 8 met en oeuvre des moyens de fixation classiques, par exemple du type par collage, vissage, encliquetage élastique. Ces moyens de fixations sont bien connus de l'homme du métier et n'ont pas besoin d'être décrits plus en détail ici.Fixing said at least one lighting device 12 in the housing 17 of the technical area 8 implements conventional fastening means, for example of the type by gluing, screwing, snap elastic. These fastening means are well known to those skilled in the art and do not need to be described in more detail here.

Ledit au moins un dispositif d'éclairage 12, tel qu'illustré à la figure 3, peut comprendre un boîtier (non représenté) dans lequel la plaquette de circuit imprimé 13 et ladite au moins une diode électroluminescente 14 peuvent être logées.Said at least one lighting device 12, as illustrated in FIG. figure 3 , may comprise a housing (not shown) in which the printed circuit board 13 and said at least one light emitting diode 14 may be housed.

La plaquette de circuit imprimé 13 dudit au moins un dispositif d'éclairage 12 est reliée à l'unité de commande du four de cuisson à micro-ondes 1 au moyen d'un câble plat (non représenté), appelé encore limande, de sorte à alimenter en énergie électrique ladite au moins une diode électroluminescente 14 dudit au moins un dispositif d'éclairage 12.The printed circuit board 13 of said at least one lighting device 12 is connected to the control unit of the microwave cooking oven 1 by means of a flat cable (not shown), also called dab, so supplying said at least one electroluminescent diode 14 of said at least one lighting device 12 with electrical energy.

La plaquette de circuit imprimé 13 dudit au moins un dispositif d'éclairage 12 est reliée à une unité de commande (non représentée) du four de cuisson à micro-ondes 1, pouvant être par exemple une carte électronique de commande, directement ou non.The printed circuit board 13 of said at least one lighting device 12 is connected to a control unit (not shown) of the microwave oven 1, for example an electronic control card, directly or not.

Ledit au moins un capteur 9 et/ou ledit au moins un dispositif d'éclairage 12 sont alimentés en énergie électrique au moyen d'au moins une connexion électrique passant au travers d'une charnière 20 reliant la paroi inférieure 3 de l'enceinte de cuisson 2 à la paroi en forme de dôme 4 de ladite enceinte de cuisson 2.Said at least one sensor 9 and / or said at least one lighting device 12 are supplied with electrical energy by means of at least one electrical connection passing through a hinge 20 connecting the lower wall 3 of the enclosure of cooking 2 to the dome-shaped wall 4 of said cooking chamber 2.

L'enceinte de cuisson 2 comprend un bras d'articulation 21 reliant la paroi en forme de dôme 4 à la paroi inférieure 3, et ledit bras d'articulation 21 comprenant un logement de passage 22 d'une liaison filaire d'alimentation électrique débouchant dans la zone technique 8 située au sommet de la paroi en forme de dôme 4.The cooking chamber 2 comprises a hinge arm 21 connecting the dome-shaped wall 4 to the bottom wall 3, and said hinge arm 21 comprising a passage housing 22 of a wired power supply connection opening in the technical area 8 at the top of the dome-shaped wall 4.

Ainsi, ledit au moins un capteur 9 et ledit au moins un dispositif d'éclairage 12 situés dans le logement 17 de la zone technique 8 peuvent être alimentés en énergie électrique par une liaison filaire s'étendant à l'intérieur d'un logement de passage 22 du bras d'articulation 21 reliant la paroi en forme de dôme 4 à la paroi inférieure 3 de l'enceinte de cuisson 2.Thus, said at least one sensor 9 and said at least one lighting device 12 located in the housing 17 of the technical zone 8 can be supplied with electrical energy by a wire link extending inside a housing of passage 22 of the hinge arm 21 connecting the dome-shaped wall 4 to the bottom wall 3 of the cooking chamber 2.

Dans un mode de réalisation de l'invention, la plaquette de circuit imprimé 13 de chaque dispositif d'éclairage 12 et ledit au moins un capteur 9 peuvent être reliés à l'unité de commande au travers d'une carte de commande d'un clavier de commande, ou bien, la plaquette de circuit imprimé 13 de chaque dispositif d'éclairage 12 et ledit au moins un capteur 9 peuvent être reliés à l'unité de commande directement ainsi que la carte de commande du clavier de commande à l'unité de commande.In one embodiment of the invention, the printed circuit board 13 of each lighting device 12 and said at least one sensor 9 can be connected to the control unit through a control card of a control panel, or the printed circuit board 13 of each lighting device 12 and said at least one sensor 9 can be connected to the control unit directly and the control board of the control keyboard to the control unit 13. control unit.

L'unité de commande du four de cuisson à micro-ondes 1 est adaptée à régler le niveau de puissance de la chaîne d'ondes.The control unit of the microwave cooking oven 1 is adapted to adjust the power level of the wavechain.

L'unité de commande comporte, de manière connue, un microcontrôleur adapté à traiter les informations provenant de la carte de commande, et ainsi à mettre en fonctionnement, éteindre ou régler le niveau de puissance de la chaîne d'ondes, et par conséquent à commander l'éclairage de ladite au moins une diode électroluminescente 14 de la plaquette de circuit imprimé 13 dudit au moins un dispositif d'éclairage 12 en fonction de la commande réalisée par l'utilisateur du four de cuisson à micro-ondes 1.The control unit comprises, in known manner, a microcontroller adapted to process the information from the control card, and thus to put into operation, extinguish or adjust the power level of the waveband, and therefore to controlling the illumination of said at least one light-emitting diode 14 of the printed circuit board 13 of said at least one lighting device 12 according to the control carried out by the user of the microwave oven 1.

Lorsque l'utilisateur commande la mise en fonctionnement du four de cuisson à micro-ondes 1, ledit au moins un dispositif d'éclairage 12 illumine l'intérieur de l'enceinte de cuisson 2 de sorte à indiquer cette commande et ledit au moins un capteur 9 régule la puissance de la chaîne d'ondes de sorte à chauffer uniformément les aliments placés dans l'enceinte de cuisson 2.When the user controls the operation of the microwave oven 1, said at least one lighting device 12 illuminates the inside of the cooking chamber 2 so as to indicate this command and said at least one sensor 9 regulates the power of the wave chain so as to evenly heat the food placed in the cooking chamber 2.

Lorsque l'unité de commande règle le niveau de puissance de la chaîne d'ondes du four de cuisson à micro-ondes 1, ledit au moins un dispositif d'éclairage 12 peut illuminer l'intérieur de l'enceinte de cuisson 2 de sorte à indiquer cet état de fonctionnement.When the control unit adjusts the power level of the microwave oven 1 microwave channel, said at least one lighting device 12 can illuminate the interior of the cooking chamber 2 so that to indicate this operating state.

La nuance de couleur et/ou l'intensité lumineuse de ladite au moins une diode électroluminescente 14 peut varier en fonction du niveau de puissance demandé par l'utilisateur.The color shade and / or light intensity of said at least one light emitting diode 14 may vary depending on the power level required by the user.

Un couvercle 23 est positionné au-dessus de la paroi en forme de dôme 4 de l'enceinte de cuisson 2, et ledit couvercle 23 étant relié à la zone technique 8 située au sommet de ladite paroi en forme de dôme 4.A cover 23 is positioned above the dome-shaped wall 4 of the cooking chamber 2, and said cover 23 is connected to the technical zone 8 situated at the top of said dome-shaped wall 4.

Le couvercle 23 est réalisé dans un matériau adapté à diffuser la lumière vers l'extérieur du four de cuisson à micro-ondes 1.The lid 23 is made of a material adapted to diffuse the light towards the outside of the microwave oven 1.

Le couvercle 23 est réalisé dans un matériau n'absorbant pas les micro-ondes pour éviter un échauffement de celle-ci et transparent pour permettre à l'utilisateur de visualiser à l'intérieur de l'enceinte de cuisson 2.The lid 23 is made of a material that does not absorb microwaves to prevent heating thereof and is transparent to allow the user to visualize inside the cooking chamber 2.

Le couvercle 23 peut être réalisé par exemple en verre, ou en matière plastique telle que du polycarbonate ou du poly-méthacrylate.The cover 23 may be made for example of glass, or plastic such as polycarbonate or poly-methacrylate.

Ainsi, la lumière émise par au moins un dispositif d'éclairage 12 est diffusée à l'intérieur de l'enceinte de cuisson 2 et à l'extérieur de l'enceinte de cuisson 2 au travers de la paroi en forme de dôme 4 et du couvercle 23.Thus, the light emitted by at least one lighting device 12 is diffused inside the cooking chamber 2 and outside the cooking chamber 2 through the dome-shaped wall 4 and lid 23.

De cette manière, l'utilisateur peut visualiser la lumière émise à l'intérieur de l'enceinte de cuisson 2 en étant à distance du four de cuisson à micro-ondes 1 et sans rester en face de celui-ci lors de son fonctionnement.In this way, the user can view the light emitted inside the cooking chamber 2 while being away from the microwave oven 1 and without remaining in front of it during its operation.

Un tel four de cuisson à micro-ondes 1 permet de pallier à l'inconvénient des fours de cuisson à micro-ondes actuels où l'utilisateur ne connaît pas l'état de fonctionnement de ceux-ci de manière interactive grâce audit au moins un dispositif d'éclairage 12 diffusant de la lumière à l'extérieur dudit four de cuisson à micro-ondes 1 au travers de la paroi en forme de dôme 4 puis du couvercle 23.Such a microwave oven 1 overcomes the disadvantage of current microwave cooking ovens where the user does not know the operating state of these interactively through audit at least one lighting device 12 diffusing light outside said microwave cooking oven 1 through the domed wall 4 and then the lid 23.

Un espace 24 est ménagé entre le couvercle 23 et la paroi en forme de dôme 4 de sorte que l'intensité des micro-ondes passant au travers de ladite paroi en forme de dôme 4 soit atténuée pour éviter des fuites micro-ondes en dehors du four de cuisson à micro-ondes 1.A space 24 is provided between the cover 23 and the dome-shaped wall 4 so that the intensity of the microwaves passing through said dome-shaped wall 4 is attenuated to prevent microwave leakage outside the microwave oven 1.

La zone technique 8 est reliée à la paroi en forme de dôme 4 et au couvercle 23 de sorte à éviter les fuites micro-ondes au niveau des jonctions entre celles-ci.The technical zone 8 is connected to the dome-shaped wall 4 and the cover 23 so as to avoid microwave leakage at the junctions between them.

La zone technique 8 comprend une paroi supérieure 27 permettant de fermer le logement 17 à l'intérieur duquel différents éléments de fonctionnement 9, 10, 12 du four de cuisson à micro-ondes sont placés.The technical zone 8 comprises an upper wall 27 for closing the housing 17 inside which various operating elements 9, 10, 12 of the microwave cooking oven are placed.

Cette paroi supérieure 27 de la zone technique 8 peut comprendre une ouverture 28 de sorte à permettre l'évacuation du flux d'air F humide et chaud à l'extérieur du four de cuisson à micro-ondes 1 après que ce flux d'air F est traversé ladite zone technique 8. Cette ouverture 28 de la paroi supérieure 27 de la zone technique 8 peut être réalisée par une pluralité de trous 29.This upper wall 27 of the technical zone 8 may comprise an opening 28 so as to allow the discharge of the moist and hot air flow F outside the microwave oven 1 after this air flow. F is crossed said technical area 8. This opening 28 of the upper wall 27 of the technical zone 8 can be achieved by a plurality of holes 29.

La paroi supérieure 27 de la zone technique 8 peut également faire partie intégrante du bras d'articulation 21 de sorte à simplifier la réalisation du four de cuisson à micro-ondes 1 et à améliorer l'esthétique de ce dernier.The upper wall 27 of the technical zone 8 can also be an integral part of the hinge arm 21 so as to simplify the production of the microwave oven 1 and improve the aesthetics of the latter.

La paroi inférieure 16 de la zone technique 8 est préférentiellement réalisée dans un matériau métallique. Cette paroi inférieure 16 de la zone technique 8 est fixée, par exemple, par soudage sur la paroi en forme de dôme 4 comprenant un piège à ondes.The bottom wall 16 of the technical zone 8 is preferably made of a metallic material. This lower wall 16 of the technical zone 8 is fixed, for example, by welding on the dome-shaped wall 4 comprising a wave trap.

Le piège à ondes de la paroi en forme de dôme 4 est également réalisé dans un matériau métallique.The wave trap of the domed wall 4 is also made of a metallic material.

De cette manière, l'assemblage de la paroi inférieure 16 de la zone technique 8 avec la paroi en forme de dôme 4 permet d'éviter des fuites micro-ondes à l'extérieur de l'enceinte de cuisson 2.In this way, the assembly of the lower wall 16 of the technical zone 8 with the dome-shaped wall 4 makes it possible to avoid microwave leakage outside the cooking chamber 2.

La paroi inférieure 16 de la zone technique 8 comprend ladite au moins une ouverture d'évacuation d'air 10 et ladite au moins une ouverture 18 permettant le passage de la lumière émise par ledit au moins un dispositif d'éclairage 12.The lower wall 16 of the technical zone 8 comprises said at least one air discharge opening 10 and said at least one opening 18 allowing the passage of the light emitted by said at least one lighting device 12.

La partie supérieure de la zone technique 8 peut être réalisée en matière plastique de sorte à être assemblée avec le couvercle 23 ou encore être intégrée dans le bras d'articulation 21.The upper part of the technical zone 8 can be made of plastic so as to be assembled with the lid 23 or be integrated into the hinge arm 21.

Ainsi, le four de cuisson à micro-ondes 1 comprend une zone technique 8 située au sommet de la paroi en forme de dôme 4 constituant l'enceinte de cuisson 2. Cette zone technique 8 est adaptée à recevoir plusieurs éléments de fonctionnement 9, 10, 12 d'un four de cuisson à micro-ondes 1 de sorte à simplifier la fabrication de ce dernier.Thus, the microwave oven 1 comprises a technical zone 8 located at the top of the dome-shaped wall 4 constituting the cooking chamber 2. This technical zone 8 is adapted to receive a plurality of operating elements 9, 10 , 12 of a microwave oven 1 so as to simplify the manufacture of the latter.

Bien entendu, de nombreuses modifications peuvent être apportées à l'exemple de réalisation décrit précédemment sans sortir du cadre de l'invention.Of course, many modifications can be made to the embodiment described above without departing from the scope of the invention.

En particulier, ledit au moins un dispositif d'éclairage de la zone technique peut comprendre une ou plusieurs sources lumineuses pouvant être du type à incandescence, à halogène.In particular, said at least one lighting device in the technical zone may comprise one or more light sources that may be of the incandescent, halogen type.

Claims (10)

  1. A microwave oven (1) comprising a cooking cavity (2), said cooking cavity (2) comprising a lower wall (3) and a dome-shaped upper wall (4), said dome-shaped wall (4) being positioned above said lower wall (3) so as to define a cooking space, and said dome-shaped wall (4) comprising an operative area (8) located at the apex of said dome-shaped wall (4), characterized in that said dome-shaped wall (4) is solid, and in that said operative area (8) located at the apex of said dome-shaped wall (4) comprises at least one air discharge outlet (10) discharging at least some of the moist warm air from said cooking cavity (2) during the implementation of a heating cycle by said microwave oven (1).
  2. A microwave oven (1) according to claim 1, characterized in that said operative area (8) located at the apex of said dome-shaped wall (4) comprises at least one sensor (9) cooperating with a controller of said microwave oven (1) during the implementation of a heating cycle by said microwave oven (1).
  3. A microwave oven (1) according to claim 2, characterized in that said at least one sensor (9) is placed above said at least one air discharge outlet (10) so that a moist warm air flow (F) circulates along said at least one sensor (9) so as to collect data regarding the heating of the food placed within said cooking cavity (2) during the implementation of a heating cycle by said microwave oven (1).
  4. A microwave oven (1) according to one of the claims 1 to 3, characterized in that an air flow (F) is generated by a fan that sucks in air from outside said microwave oven (1) through an opening (25) located within a wall (26) that forms the structure of said microwave oven (1), and that blows air into said cooking cavity (2) through holes built into said lower wall (3) and on the edge of a turntable (5).
  5. A microwave oven (1) according to one of the claims 1 to 4, characterized in that said at least one air discharge outlet (10) of said operative area (8) located at the apex of said dome-shaped wall (4) comprises a plurality of holes (11), wherein said holes (11) of said at least one air discharge outlet (10) built into said operative area (8) located at the apex of said dome-shaped wall (4) of said cooking cavity (2) discharge a moist warm air flow (F) out from said cooking cavity (2) and prevent the microwaves from escaping through said holes (11).
  6. A microwave oven (1) according to one of the claims 1 to 5, characterized in that said operative area (8) located at the apex of said dome-shaped wall (4) comprise at least one lighting device (12) that diffuses light downward into said cooking cavity (2).
  7. A microwave oven (1) according to claim 2 or 6, characterized in that said at least one sensor (9) and/or said at least one lighting device (12) are electrically powered by means of an electrical connection that passes through at least one hinge (20) connecting said lower wall (3) of said cooking cavity (2) to said dome-shaped wall (4) of said cooking cavity (2).
  8. A microwave oven (1) according to one of the claims 1 to 7, characterized in that said cooking cavity (2) comprises a jointed arm (21) connecting said dome-shaped wall (4) to said lower wall (3), and said jointed arm (21) comprising a passageway (22) housing an electrical wire connection that leads into said operative area (8) located at the apex of said dome-shaped wall (4).
  9. A microwave oven (1) according to one of the claims 1 to 8, characterized in that said dome-shaped wall (4) of said cooking cavity (2) encloses a wave trap.
  10. A microwave oven (1) according to one of the claims 1 to 9, characterized in that a lid (23) is positioned over said dome-shaped wall (4) of said cooking cavity (2), and said lid (23) being connected to said operative area (8) located at the apex of said dome-shaped wall (4).
EP20100159571 2009-04-14 2010-04-09 Microwave cooking oven including a technical area located at the top of a dome-shaped enclosure. Active EP2242332B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12191901.3A EP2557895A3 (en) 2009-04-14 2010-04-09 Microwave oven including a dome-shaped wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0901817A FR2944407B1 (en) 2009-04-14 2009-04-14 MICROWAVE COOKING OVEN COMPRISING A TECHNICAL AREA SITUATED AT THE TOP OF A DOME-SHAPED WALL

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP12191901.3 Division-Into 2012-11-09

Publications (2)

Publication Number Publication Date
EP2242332A1 EP2242332A1 (en) 2010-10-20
EP2242332B1 true EP2242332B1 (en) 2013-06-05

Family

ID=41800775

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12191901.3A Pending EP2557895A3 (en) 2009-04-14 2010-04-09 Microwave oven including a dome-shaped wall
EP20100159571 Active EP2242332B1 (en) 2009-04-14 2010-04-09 Microwave cooking oven including a technical area located at the top of a dome-shaped enclosure.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12191901.3A Pending EP2557895A3 (en) 2009-04-14 2010-04-09 Microwave oven including a dome-shaped wall

Country Status (3)

Country Link
EP (2) EP2557895A3 (en)
ES (1) ES2421358T3 (en)
FR (1) FR2944407B1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2956144A (en) * 1958-12-22 1960-10-11 Westinghouse Electric Corp Electronic ovens
US2993973A (en) * 1959-04-06 1961-07-25 Westinghouse Electric Corp Microwave oven apparatus
CH458574A (en) * 1965-12-28 1968-06-30 Husqvarna Vapenfabriks Ab Device for dielectric heat treatment
US4587393A (en) * 1984-01-05 1986-05-06 Matsushita Electric Industrial Co., Ltd. Heating apparatus having a sensor for terminating operation
JPS61184332A (en) * 1985-02-12 1986-08-18 Enami Seiki:Kk Electronic oven
JPH0654174B2 (en) * 1989-12-20 1994-07-20 株式会社バンダイ microwave

Also Published As

Publication number Publication date
EP2557895A3 (en) 2013-11-27
FR2944407A1 (en) 2010-10-15
ES2421358T3 (en) 2013-08-30
EP2557895A2 (en) 2013-02-13
EP2242332A1 (en) 2010-10-20
FR2944407B1 (en) 2012-02-10

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