EP2187700A1 - Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson - Google Patents

Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson Download PDF

Info

Publication number
EP2187700A1
EP2187700A1 EP08291073A EP08291073A EP2187700A1 EP 2187700 A1 EP2187700 A1 EP 2187700A1 EP 08291073 A EP08291073 A EP 08291073A EP 08291073 A EP08291073 A EP 08291073A EP 2187700 A1 EP2187700 A1 EP 2187700A1
Authority
EP
European Patent Office
Prior art keywords
microwave
cooking appliance
interior
wall
cooking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP08291073A
Other languages
German (de)
English (en)
Other versions
EP2187700B1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Topinox SARL
Original Assignee
Topinox SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Topinox SARL filed Critical Topinox SARL
Priority to EP08291073.8A priority Critical patent/EP2187700B1/fr
Publication of EP2187700A1 publication Critical patent/EP2187700A1/fr
Application granted granted Critical
Publication of EP2187700B1 publication Critical patent/EP2187700B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • H05B6/70—Feed lines
    • 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
    • H05B6/642—Cooling of the microwave components and related air circulation systems

Definitions

  • the invention relates to a cooking appliance, comprising: an interior comprising at least one cooking cavity, at least one microwave source and at least one microwave conducting structure for guiding microwaves from the microwave source to at least one gate in a wall or wall portion of the interior space, the microwave conducting structure in Seen propagation direction of the microwave considered at least a portion having an electrically conductive and solid wall on at least two opposite sides. Furthermore, the invention relates to a method for feeding microwaves in a cooking chamber comprising an interior of such a cooking appliance.
  • the US 2004/0188429 A1 describes a microwave cooking system with a microwave generator and a microwave line.
  • the microwave line comprises a microwave conductor coupled to the microwave generator in the form of a waveguide which is connected at one end with a coaxial cable.
  • the coaxial cable splits into two coaxial feed cables, one of which leads microwaves to a microwave oven.
  • Coaxial cables can transmit only low microwave power.
  • a generic cooking appliance is from the US 4,940,869
  • the known cooking appliance comprises a magnetron, which feeds microwaves into a waveguide.
  • the waveguide is bent and dimensioned such that the microwaves are fed through a located at the output of the waveguide opening in a cooking chamber of the cooking appliance.
  • a disadvantage of the known cooking appliance is the fact that the waveguide forms a thermal bridge between the cooking chamber atmosphere and the magnetron.
  • the invention has for its object to further develop the generic cooking appliance such that the disadvantages of the prior art are at least partially overcome.
  • a cooking appliance and methods are to be provided, which make it possible to guide a relatively high microwave power into the interior of the cooking appliance, without the microwave structure dissipating a lot of heat from the interior.
  • the section extends at least to the gate, and / or the wall has a round, in particular circular, cross-sectional shape perpendicular to the propagation direction of the microwaves.
  • the section over at least part of its length is at least partially filled with the material, and / or the material comprises a substrate, a multilayer structure and / or several different components and / or of Teflon, steatite, a ceramic and / or glass is made.
  • the Mikrowellenleit MUST at an end facing the interior of an aperture radiator, in particular in the form of a slot antenna, such as a cross-slot antenna or T-shaped slot antenna, preferably in an end wall or in the form of a round opening, preferably provided by a microwave transparent disc , includes.
  • the disc is made of a gas-tight and / or thermally insulating material and / or is in operative connection with a coupling pin, which preferably forms a coaxial conductor with the wall, in particular is connected.
  • the section extends up to an opening in the wall of the interior, wherein the section preferably has a flange in the region of the opening and / or the opening is round, in particular circular
  • the gate is arranged in a first side wall part of the interior, wherein the first side wall part is preferably connected to a second side wall part, on which a fan wheel is rotatably mounted, in particular at an obtuse angle, and / or the opening is provided in a side wall of the interior.
  • the first side wall part to a point in the interior and / or on a movably arranged in the interior, at least partially microwave reflective element, in particular the fan, is aligned or alignable, preferably at least a first gate above the fan and at least one second gate is arranged below the fan wheel.
  • the microwave conducting structure comprises at least one further section in the form of a rectangular waveguide, in which in particular the coupling pin and / or at least one antenna of a magnetron extends or extend.
  • the interior comprises a flow guide, which divides the interior at least partially into the cooking chamber and a pressure chamber, the impeller is arranged in the pressure chamber, the Strömungsleitglied with at least one, in particular centrally disposed, opening for the suction of atmosphere from the Cooking chamber is provided in the pressure chamber, and the flow guide, in particular at the edge region of the Strömungsleitgüeds, at least one air-permeable compound leaves free.
  • the cooking appliance according to the invention also comprises at least one further device for the treatment of food in the cooking chamber, in particular at least one device from the group comprising: an electric heater, a gas-powered heater, a heat exchange device, a cooling device, a moisture supply, a Feuchtigkcitsabloom Rhein, a ventilation device and a venting device.
  • a further embodiment may comprise at least one sensing device, a display device, an operating device and a control or regulating device, which in particular is in operative connection with at least one microwave source, at least one further treatment device, the display device and / or the operating device.
  • the object relating to the method for feeding microwaves into a cooking space comprising a cooking chamber is achieved according to the invention in that at least part of the section is at least partially filled with at least one dielectric material having a higher permittivity than air.
  • a plurality of treatment levels in the cooking space can be determined via a food support device, and a number of microwave sources which are appropriate for the dimensioning of the cooking space and / or the number of treatment levels can be provided.
  • the invention is based on the surprising finding that heat conduction through an electrically conductive and solid outer wall of a microwave guide structure can be achieved by reducing its diameter, wherein a reduction can be achieved in that the central region of a portion of the microwave guide structure over at least a part of its length at least partially filled with at least one dielectric material, that is to say with a material having a higher permittivity than air. Because the frequency is predetermined by microwaves in a cooking appliance with a microwave heater, the smallest dimension of a microwave conductor cross-section can not be arbitrarily reduced, if to propagate through the same TE and TM modes at the predetermined frequency.
  • the electrically conductive and solid wall may be more affected by losses Dissipate heat generated in the microwave guide structure, as it can be a flexible cable.
  • an additional parameter for impedance matching is available.
  • the position of the transition to the part filled with the dielectric material (s) may be set to optimize the impedance matching when laying out the microwave guide structure.
  • the central region is at least partially filled with a multilayer fill of at least one dielectric material having a higher permittivity than air over at least a portion of the length of the section, there will be less losses in the transmission of microwave energy than in a one-piece dielectric filling.
  • the wall comprises an electrically conductive and solid wall substantially surrounding the central region, then microwave energy is transmitted with less loss. This means that essentially no electrical and magnetic field leakage can occur.
  • the Mikrowellenleit Jardin is mechanically stronger.
  • the term "gate” is understood as meaning a structure which forms a microwave-permeable window to the interior. It comprises at least one opening in an interior wall. To such a gate, the microwaves must by means of Microwave guide be performed in order to get into the interior of the cooking chamber to act on a food in the cooking chamber.
  • the portion of the MiktovellenleüICAL which connects directly to a wall or a wall portion of the interior, be provided with a relatively small cross-section, whereby the amount of heat from the Interior in the space adjacent to the interior, which is also referred to as installation space in which the Mikrowellenleit Cook is, passes, is further reduced.
  • the wall of said section has a round, in particular circular, cross-sectional shape, its circumference is smaller than would be the case with a polygonal cross-sectional shape, which further increases the thermal resistance of this section.
  • the microwave guide structure comprises at least one further section in the form of a rectangular waveguide
  • the coupling of a microwave source is easier to realize.
  • the TE and TM modes having the lowest cutoff frequency can be well coupled into, for example, an antenna projecting into the rectangular waveguide.
  • the microwave guide structure comprises an aperture radiator at an end facing the interior, a gas-tight seal of this end of the microwave guide structure is easier to design. There are also no transitions that could cause reflections.
  • an opening forming the aperture radiator can be covered or filled with a material which is permeable to microwaves. This is structurally easier to implement than a seal between a rod antenna and the wall of the microwave guide structure.
  • the microwave guide structure comprises a portion which extends up to an opening in the wall of the inner space and has a flange in the region of the opening, the gas-tight seal against the cooking chamber atmosphere easier and safer.
  • well-known flat gaskets can be used for this purpose.
  • the microwave guide structure comprises a section that extends into an opening in the wall of the interior space and the opening is also round, in particular circular, then the contact surface with the microwave guide structure is minimized, which minimizes heat transfer.
  • the production is simplified because round openings can be drilled.
  • conventional sealing elements can be used for gas-tight sealing relative to the cooking chamber atmosphere.
  • the opening to the microwave guide structure or for the attachment thereof is provided in a side wall of the interior, the requirements for the seal against the interior are not so high.
  • liquids and dirt accumulate in the lower area.
  • discharge devices are provided in the bottom of the cooking appliance. Therefore, an arrangement of the microwave feed in the bottom area is not as favorable as an arrangement on a side wall.
  • Another effect is that the height of the cooking appliance remains relatively low when a ceiling arrangement is avoided.
  • the cooking appliance according to the invention can therefore be made more easily in a stackable version.
  • At least one of the ports is arranged in a first side wall part of the interior, which adjoins a second side wall part, on which a fan wheel is rotatably mounted, turbulence of the microwaves fed into the interior takes place without a separate mode mixer being provided for this purpose got to.
  • the fan wheel which in many cases is in any case already present for the circulation of air, aroma substances, steam and the like, thus additionally serves to even out the microwave energy in the interior.
  • the microwave radiation can be targeted to a point in a central region of the interior and / or an at least partially microwaves arranged movably in the interior Element as the fan wheel are aligned.
  • the microwaves also reflect on the second sidewall portion and on another wall adjacent the first sidewall portion, such that the microwave energy is reflected toward the central region of the interior space. If there is an element that is movably arranged in the interior and that is at least partially microwave-reflective, this energy is evenly distributed.
  • the interior comprises a flow guide, which at least partially divides the interior into the cooking chamber and a pressure chamber, wherein a fan is arranged in the pressure chamber
  • the flow control is provided with at least one, in particular centrally located, opening for sucking atmosphere from the cooking chamber and the Flow control, in particular at the edge region of the Strömungsleitglieds, leaving free at least one air-permeable connection between the cooking chamber and the pressure chamber, the temperature distribution in the cooking chamber is more uniform.
  • the cooking chamber atmosphere can be influenced in a further manner, for example by means of a steam injection device which injects steam into the atmosphere aspirated from the cooking chamber, or by means of an electric heater or a gas heater for heating the sucked-in gases.
  • a steam injection device which injects steam into the atmosphere aspirated from the cooking chamber
  • an electric heater or a gas heater for heating the sucked-in gases.
  • the homogenization of the cooking chamber climate which comes about by the circulation of the interior atmosphere, is advantageous.
  • the cooking appliance comprises at least one further device for the treatment of food in the cooking chamber, the food can be subjected to a complicated treatment without it having to be removed from the cooking space during this treatment.
  • the cooking chamber and the pressure chamber form coupled resonators, since all the walls reflect microwaves. Therefore, it is irrelevant in which of the two rooms the microwaves are first fed. If it is the pressure room, the gate will be the gates even at least partially shielded by the flow control of impurities in the cooking chamber atmosphere (fat or other particles).
  • the cooking appliance according to the invention has a plurality of microwave guide structures for guiding microwaves to at least one respective door in a wall of the interior, wherein at least two of the posts are arranged at different heights in the cooking appliance, and in each case at least one element for the radiation of microwaves in the Interior is provided, wherein the radiated from the respective element microwaves pass through the gate into the interior and in particular when the Mikrowellenleit Modellen each with at least one of a plurality of magnetrons, each having a nominal power of 2000 W HF or less in combination, it is simple and cost-effective way possible to achieve a uniform distribution of microwave energy in the interior. It can be used on magnetrons for microwave ovens for home use.
  • microwave generators such as magnetrons for microwave ovens for private use, used.
  • commercially available components can also be used in cooking appliances for large-scale kitchen use.
  • the microwave energy is evenly distributed at all levels.
  • the cooking appliance comprises a sensing device, a display device, an operating device and a control or regulating device, in particular a control or regulating device, which is in operative connection with at least one microwave source and at least one further treatment device, the display device and / or the operating device the food is subjected to a complicated treatment without the need for human intervention.
  • One in the Figures 1 and 2 exemplified cooking appliance 1 comprises a of a rear wall 2, a front wall 3, a ceiling 4, a bottom surface 5, a first side wall 6, a first side wall part 7 and a second side wall part 8 limited interior.
  • the interior is at least partially subdivided by a flow-guiding element 9 into a cooking chamber 10 and a pressure chamber 11.
  • the flow-guiding element 9 leaves at least at its top and bottom air-permeable slots 12 and centrally an opening 13 free.
  • a (not shown) door for loading the cooking chamber 10 with food (not shown) and removal of the same is attached.
  • a display device (not shown) and controls an operating device (not shown), such as knobs, buttons, etc., attached.
  • a touch-sensitive screen may be part of a control and display device.
  • a frame 14 with a plurality of rails 15a-f for insertion of (not shown) Gargutan on which the food is placed, provided.
  • the of The product carrier device formed on the frame 14 and the rails 15a-f thus defines a plurality of treatment levels in the cooking chamber 10.
  • a radial fan 16 In the pressure chamber 11 is a radial fan 16, which is driven by a motor 18 via a shaft 17.
  • the motor 18 is located in an arranged next to the pressure chamber 11 installation space 19.
  • the radial fan 16 sucks atmosphere from the cooking chamber 10 through the centrally disposed in the flow guide 9 opening 13 and blows it off radially.
  • the atmosphere to be transported passes due to this pressure difference through the slots 12 from the pressure chamber 11 back into the cooking chamber 10.
  • air-permeable openings may be provided.
  • the cooking appliance 1 comprises a microwave heating device, which will be described in more detail later, and a further device for treating food in the cooking chamber 10.
  • the cooking appliance comprises a further heating device (not shown), for example a gas-operated or electric heating device arranged around the radial fan 16 , Alternatively or in addition to such a heating device, a heat exchange device may be arranged in the flow generated by the radial fan 16.
  • a (not shown in detail) injection device may inject steam, flavor, fat and / or other substances in the flowing medium.
  • the cooking chamber 10 are one or more (not shown) sensor of a Sensie worn.
  • the sensing device is operatively connected to a control or regulating device (not shown).
  • the latter in turn is in operative connection with the operating and display device as well as with the microwave heating device and each further treatment device.
  • At least the electrical connections of all these devices are located in the installation space 19.
  • the installation space 19 is via a door (not shown) in an outer side wall 20 directly accessible, namely from outside the cooking appliance 1, to simplify maintenance and installation.
  • Microwave heater shown comprises two magnetrons 21,22, which generate microwaves.
  • the microwaves are guided in each case via microwave guide structures 23,24 to gate 25,26 and radiated through these ports into the pressure chamber 11.
  • each microwave guide structure 23,24 is associated with only one magnetron 21,22, but it can also feed multiple microwave sources microwaves in a Mikrowellenleit Modell 23,24. This depends on the desired overall performance. Namely, it is advantageous to use magnetrons 21, 22 having a rated power of 2000 W HF or less, which are manufactured in large series for use in microwave cooking appliances for private consumption.
  • the number of magnetrons 21, 22 depends on the total power required in view of the dimensioning of the interior and / or the number of treatment levels defined by the frame 14 and the rails 15a-f.
  • the gates 25, 26 are located in the first side wall part 7, which adjoins the second side wall part 8, through which the shaft 17 of the radial fan 16 passes.
  • the first side wall portion 7 is at an obtuse angle to the second side wall portion 8, for example, at an angle in the range of 100 ° to 170 °. It stands at a similar angle to the rear wall 2.
  • the at least one in the Figures 1 and 2 non-illustrated element through the gates 25,26 radiated microwaves are reflected on the rear wall 2, the second side wall portion 8, the ceiling 4 and the bottom surface 5 in the direction of the slots 12 at the edge region of the Strömungsleitglieds 9.
  • the flow guide 9 which reflects the majority of microwaves, even more, for microwave permeable but gas-tight openings may be provided.
  • the pressure chamber 11 and the cooking chamber 10 form coupled resonators, this is not absolutely necessary.
  • the radial fan 16 completely or partially reflects microwaves. During operation, microwaves are therefore swirled by the rotating radial fan 16 so that no further modem mixer is needed.
  • the gates 25,26 are arranged at different heights, namely above and below, the side of the radial fan 16. Thus, neither the gates 25,26 are shielded by the radial fan 16, nor are the microwaves in only one half of the interior swirled.
  • the first side wall portion 7 may be relatively narrow and the reason second side wall portion 8 be relatively wide, so that a radial fan 16 can be used with a relatively large diameter and / or a large additional device, such as a heater or heat exchange device to the radial fan 16 may be arranged. Also can be increased by the space gain in the interior of the cooking chamber 10.
  • a first embodiment for use as Mikrowaveleit Quilt 23,24 in the cooking appliance 1 of Figures 1 and 2 So a first microwave guide structure 27 is in the FIGS. 3 and 4 shown.
  • the first microwave guide structure 27 in this case comprises a first section in the form of a rectangular waveguide 28, which merges into a second section 29 with a round outer, electrically conductive and fixed wall 30, viewed in cross section.
  • a second section 29 At the end of this second section 29 is an integral coupling 31.
  • the coupling 31 is passed through a substantially circular opening 32 in the first side wall part 7.
  • FIG. 3 It can be seen how the microwave guide structure 27 by means of the coupling 31 on the first side wall portion 7 (see also the Figures 1 and 2
  • the coupling 31 has a flange 33, via which it is supported on the outside of the first side wall part 7.
  • a flat gasket or thermally insulating disk (not shown) could be attached between the flange 33 and this outer side.
  • a union nut 34 and a flat gasket 35 are attached on the interior side of the side wall part 7.
  • the outer diameter of the coupling 31 may be smaller in the region of the opening 32 in the first side wall part 7 than the diameter of this opening 32, because the gas-tight seal of the installation space 19 with respect to the cooking chamber interior is achieved by means of the flat seal 35.
  • the rectangular waveguide 28 comprises an air-filled central region, which is surrounded on all sides by solid, electrically conductive walls 36, 37, 38, 39, 40, 41.
  • an opening 42 In an upper wall 36 is an opening 42 with a thread 43 for coupling one of the magnetrons 21,22.
  • an antenna (not shown) of the respective magnetron 21, 22 is guided through the opening 42 into the central region of the rectangular waveguide 27.
  • TE 10 modes preferably propagate in the rectangular waveguide 28.
  • This preferred mode propagation also applies to the second portion 29, but which has a diameter much smaller than the distance between the respective longitudinally extending parallel walls 36, 37, 38, 39 of the rectangular waveguide 28, because of the fact in that this second section 28 is filled with a dielectric substrate 44.
  • This effect is also achieved when the second portion 29 has an oval or polygonal cross-sectional shape and is filled with a dielectric material.
  • the substrate 44 extends over almost the entire length of the second portion 29 and, based on the direction of propagation of the microwaves in the microwave guide structure 27, that is in the radial direction, fills the entire central area of the second portion 29 defined by the outer wall 30 Filling (viewed in the radial direction) would also be possible.
  • the substrate 44 is composed of a dielectric material or of various dielectric materials. In general, a dielectric material is understood here, in contrast to electrically conductive materials, to be a material whose dielectric properties predominate. The material used thus has a higher permittivity than that of air.
  • the relative permittivity of the material or materials is therefore greater than 1 and is, for example in the range of 2 or higher, for example in the range of 5.5 to 6.5 (at a frequency of 10 GHz).
  • Suitable dielectric materials are, for example, Teflon, steatite or other ceramic materials as well as glass, in particular tempered borosilicate glass (Pyrex), etc.
  • the substrate 44 may have a multilayer structure, such as a laminate of the same or different dielectric materials.
  • the substrate 44 may also be constructed of various concentrically arranged dielectric material layers.
  • the second portion 29 is bounded at an interior-facing end by a wall 45 in which a slot antenna 46 is provided.
  • a slot antenna 46 instead of a simple elongated slot antenna 46, an aperture radiator with a different shape can also be used.
  • a phillips antenna, a T-shaped slot antenna, a round hole, or the like may be provided.
  • it may be glued or otherwise gas-tight.
  • a (not shown) for microwave permeable, gas-tight and thermally insulating cover of the slot antenna 46 may be provided in the interior, for example. In the form of a hood or the like.
  • a second microwave guide structure 48 for use as a microwave guide structure 23, 24 in the cooking appliance 1 of the Figures 1 and 2 is in the FIGS. 5 and 6 shown. It also comprises a first section in the form of a rectangular waveguide 49, which merges into a second section 50 having a round, outer, electrically conductive and fixed wall 51, viewed in cross-section. At the end of this second section 50 is also located in the embodiment of FIGS. 5 and 6 an integral coupling 52.
  • the wall 51 is cylindrical with a circular cross-section. In an alternative Embodiment, it may be oval and / or the cross section may vary over the length.
  • the central portion of the second portion 50 is not only partially filled by the substrate 53, but also includes a coupling pin 54.
  • the coupling pin 54 extends into the cavity of the rectangular waveguide 49.
  • the coupling pin 54 forms with the outer, electrically conductive, round Wall 51 a coaxial waveguide.
  • the Mikrowellenleit MUST 48 as well as the Mikrowellenleit Quilt 27 of FIGS. 3 and 4 , by means of a coupling 52 on the first side wall part 7 (see also the Figures 1 and 2 ) attached.
  • the coupling 52 has a flange 55.
  • a union nut 56 and a flat seal 57 are attached.
  • a disk 58 of a microwave-permeable, gas-tight and thermally insulating material Located at the end of the central portion of the second portion 50 is a disk 58 of a microwave-permeable, gas-tight and thermally insulating material. Between the circular wall 51 and the coupling pin 54, a microwave-permeable opening is thus provided at the end of the microwave guide structure 48 facing the interior, which aperture forms an aperture radiator.
  • the gas-tight seal of the central region is also achieved by means of a second union nut 59 and flat gasket 60.
  • the disc 58 may be omitted if the substrate 53 additionally fulfills a sealing function.
  • the rectangular waveguide 49 comprises an air-filled central region, which is surrounded on all sides by solid, electrically conductive walls 61, 62, 63, 64, 65, 66.
  • an antenna (not shown) of the respective magnetron 21, 22 is guided through the opening 67 into the central area.
  • TE 10 modes preferably propagate in the rectangular waveguide 49.
  • the coupling pin 54 In the second section 50, due to the presence of the coupling pin 54, TEM modes, but also the TE 11 mode, propagate.
  • the part of the coupling pin 54 protruding into the rectangular waveguide 49 acts as a receiving antenna so that the field in the rectangular waveguide 49 is converted into the TE 11 mode of the second section 50.
  • the diameter of the circular wall 51 of the second section 50 is such that the wave of the TE 11 mode can propagate in the second section. Because the dielectric substrate 53 partially fills the area surrounded by the circular wall 51 and has a higher relative permittivity than air, this minimum diameter of the second portion 50 may be smaller than would be the case with a hollow-filled waveguide.
  • the substrate 53 is provided over only a part of the length of the second portion 50. With the length of the substrate 53, a transformer is realized, which allows an impedance matching between the inner space and the rectangular waveguide 49.
  • the length of the substrate 53 is thus selected in the design of the microwave guide structure 48 as a function of the impedance values, namely on the one hand of the inner space 10, 11 and on the other hand of the rectangular waveguide 49.
  • the microwaves are coupled into the interior via the microwave-open end of the second section 50.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Constitution Of High-Frequency Heating (AREA)
EP08291073.8A 2008-11-17 2008-11-17 Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson Active EP2187700B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08291073.8A EP2187700B1 (fr) 2008-11-17 2008-11-17 Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08291073.8A EP2187700B1 (fr) 2008-11-17 2008-11-17 Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson

Publications (2)

Publication Number Publication Date
EP2187700A1 true EP2187700A1 (fr) 2010-05-19
EP2187700B1 EP2187700B1 (fr) 2016-08-31

Family

ID=40601722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08291073.8A Active EP2187700B1 (fr) 2008-11-17 2008-11-17 Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson

Country Status (1)

Country Link
EP (1) EP2187700B1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013127897A1 (fr) * 2012-03-01 2013-09-06 Topinox Sarl Appareil de cuisson et procédé de commande d'un appareil de cuisson
DE102017127172A1 (de) 2017-11-17 2019-05-23 Fricke Und Mallah Microwave Technology Gmbh Erhitzungshomogener Kombigarofen
CN113038650A (zh) * 2021-04-14 2021-06-25 西华师范大学 一种微波加热装置以及微波发射控制电路
DE102015109685B4 (de) 2015-06-17 2024-05-23 Topinox Sarl Gargerät mit einer Mikrowellenquelle sowie Antenne für ein Gargerät

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866233A (en) 1983-08-10 1989-09-12 Snowdrift Corporation N.V. System for heating objects with microwaves
US4940869A (en) 1988-09-29 1990-07-10 Scholtes Combination convection and microwave oven having improved microwave energy distribution
US20040188429A1 (en) 2003-03-11 2004-09-30 Carlsson Kurt Hakan Distributed microwave system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866233A (en) 1983-08-10 1989-09-12 Snowdrift Corporation N.V. System for heating objects with microwaves
US4940869A (en) 1988-09-29 1990-07-10 Scholtes Combination convection and microwave oven having improved microwave energy distribution
US20040188429A1 (en) 2003-03-11 2004-09-30 Carlsson Kurt Hakan Distributed microwave system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013127897A1 (fr) * 2012-03-01 2013-09-06 Topinox Sarl Appareil de cuisson et procédé de commande d'un appareil de cuisson
DE102015109685B4 (de) 2015-06-17 2024-05-23 Topinox Sarl Gargerät mit einer Mikrowellenquelle sowie Antenne für ein Gargerät
DE102017127172A1 (de) 2017-11-17 2019-05-23 Fricke Und Mallah Microwave Technology Gmbh Erhitzungshomogener Kombigarofen
CN113038650A (zh) * 2021-04-14 2021-06-25 西华师范大学 一种微波加热装置以及微波发射控制电路

Also Published As

Publication number Publication date
EP2187700B1 (fr) 2016-08-31

Similar Documents

Publication Publication Date Title
DE102017111319A1 (de) Einrichtung zur Erzeugung und Transmission von Hochfrequenzwellen (HF-Wellen)
EP3035773B1 (fr) Générateur de micro-ondes et four à micro-ondes
DE3310703A1 (de) Mikrowellenkochgeraet
EP2187700B1 (fr) Appareil de cuisson et procédé d'alimentation en micro-ondes dans la chambre interne d'un appareil de cuisson
CH656283A5 (de) Mikrowellenofen.
DE2824355A1 (de) Hochfrequenzheizgeraet
EP2187703B1 (fr) Appareil de cuisson doté d'une alimentation à micro-ondes
DE102020110144A1 (de) Hochfrequenzwellenheizmodul
EP2187699B1 (fr) Appareil de cuisson et son procédé d'alimentation en micro-ondes au sein de l'enceinte de l'appareil de cuisson.
EP2187702A1 (fr) Appareil de cuisson doté d'un chauffage à micro-ondes
DE102015109685B4 (de) Gargerät mit einer Mikrowellenquelle sowie Antenne für ein Gargerät
EP3643141B1 (fr) Appareil de cuisson à micro-ondes à antenne planaire
EP3536125B1 (fr) Appareil électroménager de cuisson
DE2921990A1 (de) Mikrowellenofen
EP2187704B1 (fr) Appareil de cuisson et procédé de rayonnement de micro-ondes dans la chambre interne d'un appareil de cuisson
BE1030947B1 (de) Hochfrequenz-Haushaltsgerät, vorzugsweise Hochfrequenz-Gargerät
EP2187701B1 (fr) Dispositif d'alimentation en micro-ondes dans un appareil de cuisson, appareil de cuisson en étant doté et procédé correspondant
DE3242638A1 (de) Wellenleiter fuer hochfrequenzuebertragung
BE1030943B1 (de) Hochfrequenz-Haushaltsgerät, vorzugsweise Hochfrequenz-Gargerät
BE1030944B1 (de) Hochfrequenz-Haushaltsgerät, vorzugsweise Hochfrequenz-Gargerät
DE102018210554A1 (de) Haushalts-Mikrowellengerät und Verfahren zum Herstellen einer Mikrowellenleitung
EP3188581B1 (fr) Amplificateur à haute fréquence pour réseaux coaxiaux
DE1124980B (de) Vorrichtung zum Auftauen tiefgefrorener Substanzen, insbesondere tiefgefrorener Nahrungsmittel, unter Benutzung von Heissluft und Mikrowellen-Energie
DE102017201767A1 (de) Mikrowellengerät
DE102013103559A1 (de) Gargerät mit einem breitbandigen Mikrowellengenerator sowie Lüftungskanal für ein Gargerät

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20101104

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160519

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008014573

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 825937

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161015

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161130

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20170102

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008014573

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

26N No opposition filed

Effective date: 20170601

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161117

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161130

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 825937

Country of ref document: AT

Kind code of ref document: T

Effective date: 20161117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161117

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20161130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20081117

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160831

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20221121

Year of fee payment: 15

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230619