Abrégé

The invention relates to a waveguide power divider (10) comprising an input waveguide (1) extending along an input propagation axis (a1), and which is coupled via a coupling zone (ZC) to two output waveguides (2, 3) extending from the coupling zone, along a first output propagation axis (a2) and a second output propagation axis (a3), respectively; the three propagation axes forming a propagation plane (PP). The coupling zone contains an electrically conductive divider element (4) extending, along a secondary axis orthogonal to the propagation plane, between two walls parallel to the propagation plane, and which is in contact with the two walls. The divider element is shaped, when a microwave power is injected at the input of the waveguide power divider, in order to: significantly reduce the reflected power; and control the distribution of the microwave power in the two output waveguides.

Classes IPC  ?

• H01P 5/12 - Dispositifs de couplage présentant au moins trois accès

Abrégé

A microwave pasteurization facility for pasteurizing food products contained in packages that are hermetically sealed by an impermeable film, the facility including at least: - a microwave cavity; - a conveyor line conveying the packages through the microwave cavity; - at least one microwave generator designed to generate and propagate through the microwave cavity microwave radiation that heats the food products on the conveyor line; - a ventilation cooling system that injects cold air into the microwave cavity by means of at least one air distribution plenum transparent to the microwaves which extends continuously inside the microwave cavity, along and above the conveyor line, and is provided with holes for distributing air along and opposite the conveyor line.

Classes IPC  ?

• A23B 2/08 - Conservation des aliments ou des produits alimentaires, en général par chauffage au moyen d'irradiation ou d'un traitement électrique au moyen de micro-ondes ou par chauffage diélectrique
• A23B 2/00 - Conservation des aliments ou des produits alimentaires, en général
• A23B 2/22 - Conservation des aliments ou des produits alimentaires, en général par chauffage des produits dans leur emballage transportés progressivement, de façon continue ou par déplacements successifs, à travers les appareils avec emballages sur une chaîne sans fin ou un transporteur à courroie
• H05B 6/70 - Lignes pour l'alimentation
• H05B 6/78 - Dispositions pour le mouvement continu du matériau
• H05B 6/80 - Appareils pour applications spécifiques

Abrégé

The invention relates to an impedance-matching method (P) for matching a load (5) located at the end of a radiofrequency application chain by way of an impedance-matching network (4) having two degrees of freedom placed upstream of the load. The method is in particular implemented by way of a radiofrequency discriminator (1) positioned upstream of the impedance-matching network and at the output of a radiofrequency generator (2) generating an electromagnetic wave. The method is noteworthy in that the radiofrequency discriminator remains positioned at the same position, that is to say a fixed position (p0), and carries out two impedance measurements (Z1, Z2) on the load at two distinct distances of interest (d1, d2) such that these make it possible to decouple the two degrees of freedom of the impedance-matching network purely digitally, so as then to be able to control them independently of one other and carry out the impedance matching.

Classes IPC  ?

• H03H 7/40 - Adaptation automatique de l'impédance de charge à l'impédance de la source

Abrégé

The invention relates to a facility for chemical vapour deposition assisted by a microwave plasma (2), at a given source frequency (F), of layers of material on substrates (81) arranged inside a plasma chamber (7). The facility comprises at least one microwave generator (3) which generates electromagnetic waves at this source frequency, these waves being directed towards the inside of the plasma chamber to allow the plasma to be ignited. The facility is characterised in that it comprises at least one monitoring device (10) for monitoring a position of the plasma inside the plasma chamber, in that the microwave generator is a solid-state, variable-frequency generator, and in that it comprises a control unit (11) connected to the at least one monitoring device and to the microwave generator in order to vary the source frequency so as to control the position of the plasma.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse
• C23C 16/27 - Le diamant uniquement
• C23C 16/511 - Revêtement chimique par décomposition de composés gazeux, ne laissant pas de produits de réaction du matériau de la surface dans le revêtement, c.-à-d. procédés de dépôt chimique en phase vapeur [CVD] caractérisé par le procédé de revêtement au moyen de décharges électriques utilisant des décharges à micro-ondes

Abrégé

A device for producing a plasma, configured to generate a plasma from a reaction gas, wherein the device for producing a plasma comprises a microwave generator operating at a given source frequency comprised within a microwave frequency range and a waveguide coupled to the microwave generator and configured to guide an excitation wave. The device also includes a dielectric tube extending longitudinally along an axis of extension, the dielectric tube being configured to receive the plasma, such as the dielectric tube passes right through the waveguide; and a reaction gas injection unit configured to introduce the reaction gas into the dielectric tube.

Classes IPC  ?

• H05H 1/24 - Production du plasma
• H05H 1/46 - Production du plasma utilisant des champs électromagnétiques appliqués, p. ex. de l'énergie à haute fréquence ou sous forme de micro-ondes

Abrégé

The invention relates to a microwave pasteurisation facility (1) for pasteurising food products contained in packages (2) that are hermetically sealed by an impermeable film, the facility comprising at least: - a microwave cavity (3); - a conveyor line (4) conveying the packages through the microwave cavity; - at least one microwave generator (5) designed to generate and propagate through the microwave cavity microwave radiation (W) that heats the food products on the conveyor line; - a ventilation cooling system that injects cold air (A) into the microwave cavity by means of at least one air distribution plenum (6) transparent to the microwaves which extends continuously inside the microwave cavity, along and above the conveyor line, and is provided with holes for distributing air (60) along and opposite the conveyor line.

Classes IPC  ?

• A23L 3/01 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par chauffage au moyen d'irradiation ou d'un traitement électrique au moyen de micro-ondes ou par chauffage diélectrique
• A23L 3/04 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires par chauffage des produits dans leurs emballages transportés progressivement, de façon continue ou par déplacements successifs, à travers les appareils avec emballages sur une chaîne sans fin ou un transporteur à courroie
• A23L 3/00 - Conservation des aliments ou produits alimentaires, en général, p.ex. pasteurisation ou stérilisation, spécialement adaptée aux aliments ou produits alimentaires

Abrégé

Disclosed is a device for producing a plasma, configured to generate a plasma from a reaction gas, wherein the device for producing a plasma comprises a microwave generator (10), which operates at a given source frequency within a microwave frequency range, and a waveguide (12), which is coupled to the microwave generator (10) and configured to guide an excitation wave. The device also comprises a dielectric tube (14) extending longitudinally along an axis of extension (60), the dielectric tube (14) being configured to receive the plasma, such that the dielectric tube (14) passes from one side to the other of the waveguide (12); and a reaction gas injection unit for feeding the reaction gas into the dielectric tube (14). Lastly, the device for producing a plasma further comprises a plasma-striking unit.

Classes IPC  ?

• H05H 1/46 - Production du plasma utilisant des champs électromagnétiques appliqués, p. ex. de l'énergie à haute fréquence ou sous forme de micro-ondes

Abrégé

A microwave reactor having a flow tube, transparent to microwave, extending longitudinally along a flow axis for a fluid medium flow; an input waveguide extending along a propagation axis orthogonal to the flow axis, having a rectangular cross-section with two large sides parallel to the flow axis and two small sides orthogonal to the flow axis; and an enclosure inside which the flow tube extends, made of a material reflective to microwaves, having a lateral dimension greater than the small dimension of the small sides of the input waveguide. The input waveguide is transversely fixed on the enclosure which has an input window surrounded by the input waveguide for propagation of microwaves through the input window to the inside of the enclosure.

Classes IPC  ?

• H05B 6/80 - Appareils pour applications spécifiques
• H05B 6/70 - Lignes pour l'alimentation

Abrégé

A microwave coupling/combining device for coupling and combining at least two microwave sources includes a waveguide provided with a sleeve extending longitudinally along a main axis and having two opposing ends having a first end provided with an element forming a short-circuit and a second open end. The device further includes at least one transverse bar extending inside the sleeve along a transverse axis orthogonal to the main axis; and at least two coaxial connectors provided for being connected respectively to microwave sources. Each coaxial connector is mounted externally on the sleeve and has a central conductive core connected to and extended by a conductive antenna extending in a direction orthogonal to the transverse axis and to the main axis inside the sleeve and ending by an end attached to a transverse bar.

Classes IPC  ?

• H01P 5/103 - Transitions entre guides d'ondes creux et lignes coaxiales
• H01J 37/32 - Tubes à décharge en atmosphère gazeuse
• H01P 5/12 - Dispositifs de couplage présentant au moins trois accès

Abrégé

Microwave reactor (1,1') comprising: - a flow tube, transparent to microwaves, extending longitudinally along a flow axis (20) for a fluid medium flow; - an input waveguide (4) extending along a propagation axis (40) orthogonal to the flow axis, having a rectangular cross-section with two large sides parallel to the flow axis and two small sides orthogonal to the flow axis; - an enclosure (3) inside which the flow tube extends, made of a material reflective to microwaves, having a lateral dimension greater than the small dimension of the small sides of the input waveguide, the input waveguide being transversely fixed on the enclosure which has an input window surrounded by the input waveguide for propagation of microwaves through the input window to the inside of the enclosure.

Classes IPC  ?

• H05B 6/70 - Lignes pour l'alimentation
• H05B 6/80 - Appareils pour applications spécifiques

Abrégé

The invention relates to a microwave coupling/combining device (1) for coupling and combining at least two microwave sources, comprising a waveguide (2) provided with: - a sleeve (20) extending longitudinally along a main axis (X) and having two opposing ends comprising a first end (21) provided with an element forming a short-circuit (23) and a second open end (22); and - at least one transverse bar (3a; 3b) extending inside the sleeve (20) along a transverse axis (Y) orthogonal to the main axis (X); said microwave coupling/combining device (1) also comprising at least two coaxial connectors (4a; 4b) provided for being connected respectively to microwave sources, wherein each coaxial connector is mounted externally on the sleeve and has a central conductive core (41) connected to and extended by a conductive antenna (42) extending in a direction orthogonal to the transverse axis and to the main axis inside the sleeve and ending by an end attached to a transverse bar.

Classes IPC  ?

• H01P 5/103 - Transitions entre guides d'ondes creux et lignes coaxiales
• H01P 5/12 - Dispositifs de couplage présentant au moins trois accès

Abrégé

The present disclosure relates to an elementary device for producing a plasma. The elementary device includes a coaxial applicator of microwave power that includes a conductive central core, a conductive external shield surrounding the central core, a medium located between the central core and the shield to propagate microwave energy, and an insulating body. The elementary device further includes a system to couple to a microwave generator and is disposed at the shield. The shield has a proximal end plugged with the insulating body made of dielectric material that is transparent to the microwave energy. The insulating body has an external surface configured to contact and excite a gas located in the interior of a chamber. The insulating body extends exterior wise from the shield and its external surface is nonplanar and protrudes from the shield. The outside diameter of the body decreases from the shield to its tip.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse
• H05H 1/46 - Production du plasma utilisant des champs électromagnétiques appliqués, p. ex. de l'énergie à haute fréquence ou sous forme de micro-ondes

Abrégé

An elementary device of the present disclosure includes a coaxial applicator that includes a connector disposed at a distal end of the applicator, a shielding, a microwave energy propagation medium disposed between a central core and the shielding, and an insulating body disposed at a proximal end of the applicator. The shielding surrounds the central core and has a bottom wall provided at the distal end. The connector includes an external conductor connected to the shielding and an internal conductor connected to the central core. The connector is disposed at the bottom wall with the external conductor fixed to the bottom wall and the internal conductor linked to a connecting element that extends through the bottom wall and parallel to the main axis with a predefined spacing provided between the central core and a free end connected to the central core at a predefined distance from the bottom wall.

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse
• H05B 6/70 - Lignes pour l'alimentation
• H05B 6/80 - Appareils pour applications spécifiques

Abrégé

The invention relates to an elementary device (1) for producing a plasma, comprising: a coaxial applicator (2) of microwave power comprising a conductive central core (23), a conductive external shield (24) surrounding said central core, and a medium (25) for propagating microwave energy, said medium being located between the central core and the shield; and a system (3) for coupling to a microwave generator, which system is placed on the shield, wherein the shield has a proximal end plugged with an insulating body (26) made of dielectric material that is transparent to the microwave energy and having an external surface (27) provided to make contact with a gas to be excited that is located in the interior of a chamber, and wherein the insulating body extends exteriorwise from the shield and its external surface (27) is nonplanar and protrudes out of the shield, the outside diameter of the body decreasing from the shielding to its tip. The present invention is applicable to the field of equipment for producing a plasma.

Classes IPC  ?

• H05H 1/46 - Production du plasma utilisant des champs électromagnétiques appliqués, p. ex. de l'énergie à haute fréquence ou sous forme de micro-ondes
• H01J 37/32 - Tubes à décharge en atmosphère gazeuse

Abrégé

The invention pertains to an elementary device (1) for applying a microwave energy, comprising a coaxial applicator (2) exhibiting a distal end (21) furnished with a connector with coaxial structure (3) for coupling with a coaxial guide or cable (5) linked to a microwave energy generator and an opposite proximal end (22) provided in order to emerge inside an enclosure (4), this coaxial applicator comprising: - a central conducting core (23) extending along a main axis (AP), - a shielding (24) exhibiting a peripheral wall (240) surrounding this central core and a back wall (241) provided on said distal end and extending transversely with respect to said main axis, - a microwave energy propagation medium (25) situated between the central core (23) and the shielding (24), and - an insulating body (26) made of dielectric material, transparent to microwave energy and disposed on said proximal end; where the connector with coaxial structure is provided with an external conductor (31) connected to said shielding and surrounding an internal conductor (32) connected to said central core, and is disposed on the back wall of the shielding while having its external conductor fixed on said back wall and its internal conductor linked to a slimline connection element (33) which passes through said back wall and which extends parallel to the main axis with a predefined spacing in relation to said central core up to a free end connected to said central core at a predefined distance from said back wall.

Classes IPC  ?

• H05B 6/70 - Lignes pour l'alimentation
• H01R 9/05 - Dispositifs de connexion conçus pour assurer le contact avec plusieurs des conducteurs d'un câble multiconducteur pour câbles coaxiaux
• H05B 6/80 - Appareils pour applications spécifiques
• H05H 1/46 - Production du plasma utilisant des champs électromagnétiques appliqués, p. ex. de l'énergie à haute fréquence ou sous forme de micro-ondes

Abrégé

The invention relates to a facility (1) for microwave treatment of a load, including: at least one application device (30); at least one solid-state generator (4) in the field of microwaves, connected to at least one application device by a means for guiding (5) the electromagnetic wave; at least one frequency adjustment system (40) designed for adjusting the frequency of the wave produced by the corresponding generator (4); a measurement system (31) for the or each application device (30), designed for measuring the power reflected PR(i) by the application device (30); an automated control means (6) connected to each frequency adjustment system (40) and to each measurement system (31) in order to control the adjustment of the frequency f(i) of the electromagnetic wave according to the reflected power, in order to adjust the reflected power PR(i) and/or to adjust the transmitted power PT(i).

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse

Abrégé

The invention relates to a device (7) for applying electromagnetic energy to a reactive medium, with said device being designed to be connected to an electromagnetic radiation generator using a means of transmission (4) of said radiation, with the device being remarkable in that it includes at least one loss transmission line (70) that features an interface that transfers electromagnetic energy towards the reactive medium, with said transfer interface being arranged so as to assure, throughout the length of the said line, a pre-determined distribution cross-section for the density of the electromagnetic energy delivered to said medium by said line. The invention also relates to a device for processing, by electromagnetic radiation, of a reactive medium including such an application device. The present invention can be applied to the sector of devices for thermal treatment of a reactive medium, specifically by microwave or high-frequency radiation.

Classes IPC  ?

• C12M 1/00 - Appareillage pour l'enzymologie ou la microbiologie
• B01J 19/08 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage
• B01D 53/32 - Séparation de gaz ou de vapeursRécupération de vapeurs de solvants volatils dans les gazÉpuration chimique ou biologique des gaz résiduaires, p. ex. gaz d'échappement des moteurs à combustion, fumées, vapeurs, gaz de combustion ou aérosols par effets électriques autres que ceux prévus au groupe
• B01J 19/00 - Procédés chimiques, physiques ou physico-chimiques en généralAppareils appropriés

Abrégé

The device for electromagnetic radiation treatment of a reactive medium includes an electromagnetic radiation generator, a reactor containing the reactive medium, and a device for transmitting the electromagnetic radiation generated by the generator to the reactive medium contained in the reactor. The device includes a wave guide for transmitting the electromagnetic radiation from the generator and a coupling means arranged to allow transfer within the reactive medium of the electromagnetic energy transmitted by the wave guide. The wave guide includes a curved segment in a general “U” shape forming a return loop from the wave guide. The device further includes a separation wall that isolates the generator form the reactor, with the reactor being connected to the curved segment. The curved segment extends at least partially from one side of the separation wall to the opposite generator.

Classes IPC  ?

• B01J 19/08 - Procédés utilisant l'application directe de l'énergie ondulatoire ou électrique, ou un rayonnement particulaireAppareils à cet usage

Abrégé

The invention relates to a device (7) for applying electromagnetic energy to a reactive medium, with said device being designed to be connected to an electromagnetic radiation generator using a means of transmission (4) of said radiation, with the device being remarkable in that it includes at least one loss transmission line (70) that features an interface that transfers electromagnetic energy towards the reactive medium, with said transfer interface being arranged so as to assure, throughout the length of the said line, a pre-determined distribution cross-section for the density of the electromagnetic energy delivered to said medium by said line. The invention also relates to a device for processing, by electromagnetic radiation, of a reactive medium including such an application device.  The present invention can be applied to the sector of devices for thermal treatment of a reactive medium, specifically by microwave or high-frequency radiation.

Classes IPC  ?

• H05B 6/70 - Lignes pour l'alimentation

Abrégé

The invention relates to a device for electromagnetic radiation treatment of a reactive medium, including an electromagnetic radiation generator (1), a reactor (2) containing said reactive medium, and a device (3) for transmitting the electromagnetic radiation generated by the generator (1) to the reactive medium contained in said reactor (2), where said device (3) includes a wave guide (4) intended to transmit the electromagnetic radiation from the generator (1) and a coupling means (5) arranged so as to allow transfer within the reactive medium of the electromagnetic energy transmitted by the wave guide (4). The invention is characterized in that: the wave guide (4) includes a curved segment (40), specifically in a general “U” shape, which forms a return loop from said wave guide (4); and in that the device includes a separation wall (92) that isolates the generator (1) from the reactor (2), with said reactor (2) being connected to the curved segment (40) of the wave guide (4) and where said curved segment (40) extends at least partially from one side (90) of the separation wall (92) opposite said generator (1). The present invention is suitable for use in the sector involving devices used for the thermal treatment of a reactive medium, specifically by microwave radiation.

Classes IPC  ?

• H05B 6/70 - Lignes pour l'alimentation

Abrégé

Microwave reactor (1,1') comprising: - a flow tube, transparent to microwaves, extending longitudinally along a flow axis (20) for a fluid medium flow; - an input waveguide (4) extending along a propagation axis (40) orthogonal to the flow axis, having a rectangular cross-section with two large sides parallel to the flow axis and two small sides orthogonal to the flow axis; - an enclosure (3) inside which the flow tube extends, made of a material reflective to microwaves, having a lateral dimension greater than the small dimension of the small sides of the input waveguide, the input waveguide being transversely fixed on the enclosure which has an input window surrounded by the input waveguide for propagation of microwaves through the input window to the inside of the enclosure.

Classes IPC  ?

• H05B 6/70 - Lignes pour l'alimentation
• H05B 6/80 - Appareils pour applications spécifiques

Abrégé

The invention relates to a facility (1) for microwave treatment of a load, including: at least one application device (30); at least one solid-state generator (4) in the field of microwaves, connected to at least one application device by a means for guiding (5) the electromagnetic wave; at least one frequency adjustment system (40) designed for adjusting the frequency of the wave produced by the corresponding generator (4); a measurement system (31) for the or each application device (30), designed for measuring the power reflected PR(i) by the application device (30); an automated control means (6) connected to each frequency adjustment system (40) and to each measurement system (31) in order to control the adjustment of the frequency f(i) of the electromagnetic wave according to the reflected power, in order to adjust the reflected power PR(i) and/or to adjust the transmitted power PT(i).

Classes IPC  ?

• H01J 37/32 - Tubes à décharge en atmosphère gazeuse