Abstract: The invention relates to a device for storing articles in a controlled atmosphere, comprising: at least one storage module capable of receiving the articles to be stored; a storage module provided with at least one shelf for positioning the articles, the storage module having a substantially parallelepiped shape, and having two substantially vertical and opposite walls between which the shelves extend, wherein the device is characterized in that shutters are provided, each shutter being positioned opposite one of the shelves, and between one of the two walls and the shelf in question, so as to prevent the gas from flowing vertically at the location of a shutter, and to allow the gas to flow only transversely along the shelf associated with the shutter in question.

Abstract: A method and an installation seeking to create a controlled atmosphere in the head space of a product storage container in an installation of the type in which the following measures are taken continuously: —the container is partially filled with the product to a given fill level; —the upper part of the container is placed in contact with a treatment gaseous atmosphere aimed at removing all or some of the air present in the container above said fill level and at installing the required controlled atmosphere above said level; —the upper edge of the container is sealed or closed using a suitable means; —the controlled atmosphere being installed upstream of and/or during sealing, characterized in that the controlled atmosphere is installed in an uncontained injection zone by using at least one injector of tubular type oriented in the injection zone in such a way that at least one of the components of the velocity of the sprayed gas is the opposite to the direction of travel of the containers, and in that the inj

Abstract: The invention relates to a device for spraying particles of dry ice, notably for the purpose of cleaning surfaces, comprising a spray nozzle (4), allowing the passage of a working fluid carrying said particles, said nozzle (4) having an outlet orifice (5) and comprising a throat (6) and a divergent part (7) said divergent part (7) extending between the throat (6) and the outlet orifice (5) of the nozzle. According to the invention, said divergent part (7) has at least one first stage extending between the throat (6) and an outlet orifice of said first stage (5, 12) and the ratio between the area of the throat (6) and the area of said outlet orifice (5, 12) of the first stage of the divergent part is greater than 0.2.

Abstract: The invention relates to a device for storing articles in a controlled atmosphere, comprising: at least one storage module capable of receiving the articles to be stored; a storage module provided with at least one shelf for positioning the articles, the storage module having a substantially parallelepiped shape, and having two substantially vertical and opposite walls between which the shelves extend, wherein the device is characterized in that shutters are provided, each shutter being positioned opposite one of the shelves, and between one of the two walls and the shelf in question, so as to prevent the gas from flowing vertically at the location of a shutter, and to allow the gas to flow only transversely along the shelf associated with the shutter in question.

Abstract: The invention relates to a device for supplying inert gas in order to protect the surface of a solder bath in a wave soldering installation and the components to be soldered against oxidation. Wave soldering installations form solder waves over which parts to be soldered are transported. The parts to be soldered are generally electronic printed circuit boards which have electronic components soldered onto their undersides by the solder wave making contact with the printed circuit board.

Abstract: The invention relates to a device for supplying inert gas in order to protect the surface of a solder bath in a wave soldering installation and the components to be soldered against oxidation. Wave soldering installations form solder waves over which parts to be soldered are transported. The parts to be soldered are generally electronic printed circuit boards which have electronic components soldered onto their undersides by the solder wave making contact with the printed circuit board.

Abstract: The invention relates to a supply device for feeding a gas to a wave brazing or tinning machine, wherein said machine is capable of generating at least one soldering wave, comprising: a gas inlet channel, a set of N secondary channels immersed in the solder bath of the brazing or tinning machine, and an injection channel supplying at least one injection means for injecting the gas in the vicinity of said at least one wave, each secondary channel having its inlet end connected to the injection channel, characterized in that the number N of secondary channels is equal to or higher than 1, and in that the inner diameter d of the secondary channels and the gas flow rate Q0 in the inlet channel are selected so that the gas flow in the secondary channels is in a turbulent mode.

Abstract: The invention relates to a supply device for feeding a gas to a wave brazing or tinning machine, wherein said machine is capable of generating at least one soldering wave, comprising: a gas inlet channel, a set of N secondary channels immersed in the solder bath of the brazing or tinning machine, and an injection channel supplying at least one injection means for injecting the gas in the vicinity of said at least one wave, each secondary channel having its inlet end connected to the injection channel, characterized in that the number N of secondary channels is equal to or higher than 1, and in that the inner diameter d of the secondary channels and the gas flow rate Q0 in the inlet channel are selected so that the gas flow in the secondary channels is in a turbulent mode.

Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.

Abstract: The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening o allowing the gas to be ejected at right angles to its direction of flow in the pipe.

Abstract: The invention relates to a machine for wave soldering or tinning comprising a solder reservoir (9); means that can form at least one solder wave with a so-called laminar form (8b); a conveyor system (2) that can bring a piece (1) to be soldered or tinned into contact with said laminar wave; and means for injecting (12) a gas in the vicinity of the wave; characterized in that the said injection means includes an injector located in a position adjacent to and downstream from the wave and provided with a wall (17) facing the solder wave, wherein the wall of the injector has at least a first group (15) of openings positioned so as to provide a first gas jet directed toward the flat surface of the solder wave.

Abstract: The invention relates to a machine for wave soldering or tinning comprising

Abstract: Provided is an apparatus for grinding containers that contain a powder. The apparatus includes (i) a grinder, (ii) an enclosure for confinement of the powder released during grinding, (iii) a supply of an inert atmosphere, and (iv) a conduit which directs the inert atmosphere from the supply into the enclosure. Also provided is a process for grinding containers that contain a powder, the grinding being carried within an atmosphere of an enclosure.

Abstract: The invention relates to a machine for wave soldering or tinning comprising a solder reservoir (9); means that can form at least one solder wave with a so-called laminar form (8b); a conveyor system (2) that can bring a piece (1) to be soldered or tinned into contact with said laminar wave; and means for injecting (12) a gas in the vicinity of the wave; characterized in that the said injection means includes an injector located in a position adjacent to and downstream from the wave and provided with a wall (17) facing the solder wave, wherein the wall of the injector has at least a first group (15) of openings positioned so as to provide a first gas jet directed toward the flat surface of the solder wave.

Abstract: The invention relates to a machine for wave soldering or tinning comprisinga solder reservoir (9);means that can form at least one solder wave with a so-called laminar form (8b);a conveyor system (2) that can bring a piece (1) to be soldered or tinned into contact with said laminar wave; andmeans for injecting (12) a gas in the vicinity of the wave;characterized in that the said injection means includes an injector located in a position adjacent to and downstream from the wave and provided with a wall (17) facing the solder wave, wherein the wall of the injector has at least a first group (15) of openings positioned so as to provide a first gas jet directed toward the flat surface of the solder wave.

Abstract: The invention relates to a process for supplying gas to a chamber which is supplied via a supply network which includes at least one primary line connected in its upstream part to a supply of the said gas, and at least two respective secondary lines connected to the primary lines, being characterized in that the content of a given component of the atmosphere in the chamber is measured at least at one point in the chamber, the measured content is compared with at least one predetermined control value for the content of the said component of the atmosphere in the chamber at the said point and, where necessary, the pressure of the gas at one of the points in the network is varied, depending on the result of this comparison.

Abstract: Wave soldering or tinning machine comprising:a solder reservoir;a means that forms at least one solder wave having a laminar form and including a flat surface;a means for bringing a piece to be soldered or tinned into contact with the laminar wave; andmeans for injection of a gas in the vicinity of the wave comprising an injector located in a position adjacent to and downstream from the wave and provided with a wall facing the solder wave, wherein the wall has at least a first group of openings positioned so as to produce a first gas jet directed toward the flat surface of the solder wave.

Abstract: A gas injection apparatus and process to form a controlled atmosphere in a confined space, comprising at least one assembly of ducts installed in series and/or in parallel, of which at least a part (2, 12, 13) of a duct comprises gas injection apertures. The assembly is supplied by at least one gas supply main (9, 14, 15), each main being connected to the assembly at the level of a primary connection node (8, 16, 17), the dimensions of the assembly observing the following relationship:.SIGMA..omega..sub.i /.SIGMA..phi..sub.i .gtoreq.1, preferably .gtoreq.1.5;wherein .SIGMA..omega..sub.i represents the sum of internal sections of the gas supply mains feeding the assembly and .SIGMA..phi..sub.i represents the sum of the cross-sections of the gas injection apertures of the ducts assembly.

Abstract: A device making it possible to carry out wettability measurements under a controlled atmosphere, comprising an apparatus (5) for measuring the wettability of at least one surface portion of a sample by a liquid metallic solder, at least partially included in an enclosure (6) which includes a gas injector which comprises at least one set of ducts (10) mounted in series and/or in parallel, at least one portion of which includes gas injection orifices, and is fed by at least one gas supply pipe connected to the set at a primary connection node, the dimensioning of the set respecting the following relationship:.SIGMA..omega..sub.i /.SIGMA..phi..sub.i .gtoreq.1 preferably.gtoreq.1.5;where .SIGMA..omega..sub.i represents the sum of the internal cross sections of the gas supply pipes which feed the set and .SIGMA..phi..sub.i represents the sum of the cross sections of the gas injection orifices of the set of ducts.

Abstract: A device for providing a non-oxidizing atmosphere above a soldering bath in a vat of a machine for wave soldering, includes a hooding assembly closing the vat, an inner space and a conveyor for electronic circuits extending through the inner space. The inner space is separated from the surrounding atmosphere through seals disposed along the path of the circuits. There is structure for providing and maintaining a non-oxidizing atmosphere in the inner space, for example an inert gas or a mixture of inert and reducing gas.