SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Guillot, Victor
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Mehmel, Lahcene
Abstract
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.
C23C 16/511 - Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using microwave discharges
3.
DEVICE FOR PRODUCING A PLASMA COMPRISING A PLASMA IGNITION UNIT
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Zoubian, Fadi
Renaut, Nicolas
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Depagneux, Bertrand
Taoufik, Moulay
Thillier, Alexandre
Trescarte, Eric
Abstract
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.
A23L 3/01 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating using irradiation or electric treatment using microwaves or dielectric heating
A23L 3/04 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by heating materials in packages which are progressively transported, continuously or stepwise, through the apparatus with packages on endless chain or band conveyors
A23L 3/00 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
5.
DEVICE FOR PRODUCING A PLASMA COMPRISING A PLASMA-STRIKING UNIT
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Zoubian, Fadi
Renaut, Nicolas
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Gadeyne, Thibault
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Gadeyne, Thibault
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Radoiu, Marilena
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Radoiu, Marilena
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Radoiu, Marilena
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Latrasse, Louis
Radoiu, Marilena
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grandemenge, Adrien
Jacomino, Jean-Marie
Radoiu, Marilena
Latrasse, Louis
Abstract
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).
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grandemenge, Adrien
Jacomino, Jean-Marie
Radoiu, Marilena
Latrasse, Louis
Abstract
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).
Sairem Societe pour l'Application Industrielle de la Recherche en Electronique et Micro Ondes (France)
Inventor
Grange, Andre
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.
C12M 1/00 - Apparatus for enzymology or microbiology
B01J 19/08 - Processes employing the direct application of electric or wave energy, or particle radiationApparatus therefor
B01D 53/32 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by electrical effects other than those provided for in group
B01J 19/00 - Chemical, physical or physico-chemical processes in generalTheir relevant apparatus
18.
Device for electromagnetic radiation treatment of a reactive medium
Sairem Societe Pour l'Application Industrielle de la Recherche en Electronique et Micro Ondes (France)
Inventor
Grange, Andre
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grange, Andre
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grange, Andre
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grange, André
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.
SAIREM SOCIETE POUR L'APPLICATION INDUSTRIELLE DE LA RECHERCHE EN ELECTRONIQUE ET MICRO ONDES (France)
Inventor
Grange, André
Jacomino, Jean-Marie
Grandemenge, Adrien
Abstract
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.