• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The subject of the present invention is a method of protection, by fluidic blow, of an apparatus for transmitting and / or receiving electromagnetic waves, said apparatus comprising a protection element (1) of the type such as glass, glass or other material passing through said waves transmitted or received along a propagation axis (X). The method comprises injecting at least one fluid, at one or more injection points, into an annular ejection channel (4b) ending in an annular ejection slot (4c) opening outwards in front of or at a height said element and ejecting, by said slot, a protective flow, formed by the flow of fluid in said channel, creating a shielding envelope and thermal control air or hydraulic in front of said element. It also relates to a device suitable for its implementation and such a device equipped with the latter.
    公开号:FR3054971A1
    申请号:FR1657757
    申请日:2016-08-12
    公开日:2018-02-16
    发明作者:Sacha Bernet；Romain Bocquet；Vincent Lalanne
    申请人:Accelinn；
    IPC主号:
    专利说明:

    DESCRIPTION
    The present invention relates to the field of devices for transmitting and / or receiving electromagnetic waves and more particularly to devices for protecting these devices against external environmental constraints and relates to a method of protection, by fluid blowing, of a apparatus for transmitting and / or receiving electromagnetic waves. It also relates to a protection device with fluid blowing, suitable for the implementation of said method. It also relates to such a device equipped with such a device.
    The present invention finds more particularly an application in the field of laser beam cutting and / or welding devices, better known under the name of laser cutting and / or welding heads, which are subjected to environmental constraints such as particles, dust or splashes from welds or molten metal. Another application can relate to image acquisition devices such as cameras which are frequently subjected, particularly in the industrial world, to very dusty environments and / or to very high temperatures or temperature variations.
    These constraints disrupt or affect the proper functioning of the devices which consequently require significant and costly maintenance with the intervention of operators for their cleaning or repair.
    To overcome this drawback, these devices, if this does not disrupt their operation, are generally equipped with a protective element such as a window pane or a glass capable of allowing passage, that is to say through it, the waves electromagnetic, for example the laser beam or light radiation coming from outside, emitted or received by said device, which for this purpose comprises a sensor or an emitter, while creating a protective screen. Such a screen prevents particles, dust or projections of solder or molten metal from reaching the operating members of the device concerned such as, for example, depending on the application, its optics, for example a focusing lens of the laser beam, its sensor or its emitter, for example its laser source.
    -2 However, these panes or protective glasses, the front part of which is in contact with the outside, are in turn subject to external environmental constraints. As a result, the particles, dust or projections which reach them dirty or degrade them and these windows are directly exposed to thermal stresses. This exposure to thermal stresses, in particular during thermal variations, has the effect of creating deformations of the window pane or of the glass which change its properties of transmission of electromagnetic waves. In addition, if the thermal stresses are too great, the material constituting the window pane or the glass may be damaged.
    The protective glass or glass, in particular in the field of laser welding, is therefore cleaned regularly and changed as a function of the fouling rate or of its deformation. These operations require the intervention of an operator and especially the shutdown of the device and therefore of production.
    To remedy this problem, it has been proposed in document DE20080266, which relates to a hybrid laser head comprising a laser source, a focusing optic and a protective glass, to use an air knife emitted by a rectilinear rectangular slot located on the side of the laser beam. The air gap, which cuts the beam transversely under the protective glass and at a distance from it, prevents splashes of molten metal from settling on the protective glass and prevents part of the fumes from settling on the glass, which would reduce the transfer rate of the laser beam and cause the temperature of the glass to rise.
    However, if the protection devices of the type of those disclosed in the aforementioned document provide a solution for protecting the window pane or the glass against the environmental stresses to which he or she is exposed, they do not make it possible to effectively combat particles, dust or projections likely to reach the window or the glass and against the problems of heating or thermal variations due to the thermal environment and affecting the stability and / or the structure of the window or the protective glass. In addition, these devices give the entire laser head a large size.
    The present invention aims to overcome at least one of these drawbacks.
    -3 For this purpose, the method of protection, by fluid blowing, of an apparatus for transmitting and / or receiving electromagnetic waves, said apparatus comprising a protection element having a rear part in contact with the interior and a front part in contact with the exterior of the apparatus, said element being capable of allowing said electromagnetic waves emitted or received along an axis of propagation to pass, is essentially characterized in that it consists, from a protection device with fluid blowing fitted to said apparatus and comprising an annular ejection channel ending in an annular ejection slot opening outwards in front of or at the level of the front part of the element, preferably in front of or at the level of the part anterior of the element by surrounding the axis of propagation or by being centered on the latter:
    - injecting at least one fluid, at one or more injection points, into the annular ejection channel to form a protective flow,
    - to be ejected outside and, preferably towards the axis of propagation, by the annular ejection slot, the protective flux thus formed so as to create in front of or at the height of the front part of the element, a protective envelope and aeraulic or hydraulic thermal regulation having the effect of preventing particles coming from outside from reaching said element and allowing a heat exchange between the latter and said flow regulating its temperature, while allowing through said flow, electromagnetic waves from or to said element.
    Still for this purpose, the fluid-blown protection device according to the present invention, suitable for implementing the method according to the present invention, suitable and intended for equipping an apparatus for transmitting and / or receiving electromagnetic waves comprising a protective element having a rear part in contact with the interior and a front part in contact with the exterior of the apparatus, said element being capable of allowing said electromagnetic waves emitted or received along a propagation axis, is characterized essentially in that it comprises a fluid blowing nozzle capable of being mounted, or at least partially integrated, on or in said apparatus, said nozzle comprising, on the one hand, means for supplying at least one fluid , an annular ejection channel ending in a
    -4 annular ejection slot, an external wall and an internal wall defining between them said annular ejection channel, said external wall comprising at least one orifice for injecting the or each fluid into said annular ejection channel and, d 'other hand, fixing means for fixing the nozzle on the device so that the annular ejection slot opens outwards in front of or at the height of the front part of the element, preferably in front or height of the front part of the element by surrounding the axis of propagation or by being centered on the latter.
    Still for this purpose, the apparatus for transmitting and / or receiving electromagnetic waves comprising a protective element having a rear part in contact with the interior and a front part in contact with the exterior of the apparatus, said element being capable of allowing said electromagnetic waves transmitted or received to pass along an axis of propagation, is essentially characterized in that it is equipped with a fluid-blown protection device according to the present invention and in that it has means for additional fixing suitable and intended to cooperate with the means for fixing the fluid blowing nozzle, and / or a receiving space integrating all or part of the fluid blowing nozzle, to allow its fixing or its integration on or in said apparatus for so that the annular ejection slot opens outwards in front of or at the level of the anterior part lower of the element, preferably in front of or at the height of the anterior part of the element by surrounding Tax of propagation or by being centered on the latter.
    The invention will be better understood from the following description, which relates to a preferred embodiment, given by way of nonlimiting example, and explained with reference to the appended schematic drawings, in which:
    - Figure 1 is a side cross-sectional view of a fluid-blown protection device, according to the present invention, mounted on an apparatus for transmitting and / or receiving electromagnetic waves of the light wave type, according to the present invention, partially shown and showing the flow profile,
    FIG. 2 is a cross-sectional view from above of the device shown in FIG. 1,
    FIG. 3 is a perspective view of the apparatus shown in FIG. 1, showing the anterior side of the latter comprising the device shown in FIG. 1,
    - Figure 4 shows the device and the apparatus as shown in Figure 1 in a configuration of simulation of its operation and of the flow of the fluid making it possible to visualize the speed and the behavior of the fluid from the supply means up to '' outside in front of the front part of the element to be protected,
    - Figure 5 shows the device as shown in Figure 2 in a configuration of simulation of its operation and the flow of the fluid to view the behavior of the fluid in the nozzle.
    - Figure 6 is a cross-sectional view from above of the device according to the present invention, in an embodiment comprising a superposition of two injection planes, one of which is similar to that shown in Figure 2.
    The figures show a protection device by fluid blowing, according to the present invention, suitable and intended to equip an apparatus for transmitting and / or receiving electromagnetic waves, for example light waves such as a laser beam or acoustic waves. , said apparatus comprising a protective element 1 having a rear part in contact with the interior 2 of the apparatus, for example with the interior space of a housing, for example a housing of a laser head for the treatment of laser surfaces or a camera housing, and a front part in contact with the outside 3, said element being capable of passing, that is to say through it, said electromagnetic waves emitted or received, this is that is to say by a sensor or a transmitter that the apparatus comprises, along a propagation axis X. They also show such an apparatus adapted to be equipped with such a device. if.
    It will be understood that such an apparatus may comprise, not shown in the figures, a sensor or a transmitter making it possible to transmit or receive the electromagnetic waves in the direction of propagation X. It will be noted that the protective element 1 may be constituted directly by the sensor or transmitter.
    The method of protection, by fluid blowing, of such an apparatus for transmitting and / or receiving electromagnetic waves, consists, from a fluid blowing protection device fitted
    -6said apparatus and comprising an annular ejection channel 4b ending in an annular ejection slot 4c opening to the outside 3 in front of or at the level of the front part of the element 1, preferably in front of or at the level of the anterior part of element 1 by surrounding the axis of propagation X or being centered on the latter:
    - injecting at least one fluid 5, at one or more injection points 40d, into the annular ejection channel 4b to form a protective flow 6,
    - to eject outside and, preferably towards the axis of propagation X, through the annular ejection slot 4c, the protective flux 6 thus formed so as to create in front of the front part of the element 1, c '' is to say in the vicinity of, in the vicinity of, in a zone adjacent to, or against, the front part of the element 1, a protective and thermal regulation 7 air or hydraulic envelope having the effect of preventing particles coming from outside to reach said element and to allow a heat exchange between the latter and said flow regulating its temperature.
    The heat exchange can be created by the turbulence generated by the thermal protection and regulation envelope 7 at the level of the element 1. This heat exchange makes it possible to maintain the element 1 under controlled thermal conditions and thus minimize the effects. thermal expansion as well as premature aging of said element 1 (Figure 4).
    Preferably, the method can consist in carrying out the flow of or each fluid in said annular ejection channel 4b up to the annular ejection slot 4c by imparting to it a determined shape and / or speed (s). In a form preferably of the flow of or each fluid in the annular ejection channel 4b, the method can consist, in effecting the flow of the or each fluid in the annular ejection channel 4b by imparting a shape thereto conical or vortex (Figure 5).
    Preferably, the method may consist in carrying out the flow of or each fluid by increasing its speed between its injection point in the annular ejection channel 4b and the annular ejection slot 4c.
    In a preferred embodiment of the injection of the or each fluid into the annular ejection channel 4b, as can be seen in FIG. 6, the method can consist in injecting the or each fluid
    In the annular ejection channel 4b at one or more injection points distributed in the same plane or in a superposition of injection planes, for example two injection planes, perpendicularly cutting the axis of said channel , this so as to inject the or each fluid into the annular ejection channel 4b in a stepped manner along said axis.
    If one refers in particular to FIGS. 1, 2, 4 and 6, it can be seen that the axis of the annular ejection channel 4b, that is to say more particularly its axis of symmetry or of revolution, is coincident with l X axis of propagation of electromagnetic waves passing through the protective element 1. Of course, the present invention can provide another situation where the two axes are not merged. Preferably, the axis of the annular ejection channel is positioned so as to be parallel or substantially parallel to the axis of propagation X, or even being inclined relative to the latter.
    In this embodiment where the device comprises, for example, at least two injection planes, the method can consist in injecting a first fluid into one of the injection planes and in injecting a second fluid, preferably of viscosity different from that of the first fluid, in the other injection plane.
    Preferably, the method can consist in injecting the or each fluid in one of the ejection planes with an angle of attack or a different incidence (e) from that or that of or each fluid injected in another plane d 'ejection.
    On the other hand, when the method provides for injecting into several injection planes, the method can consist in achieving an angular offset between the injection points of one of the injection planes and the injection points from another injection plan.
    In a preferred embodiment, the method may consist in providing a step prior to injection consisting in being able to adjust the flow cross section of the annular ejection channel 4c to modify the flow speed of the or each fluid.
    Such a fluid-blown protection device, suitable for implementing the aforementioned method according to the present invention, suitable and intended for equipping such an apparatus for transmitting and / or receiving electromagnetic waves, comprises a nozzle 4 for blowing fluid fit to be
    -8 mounted, or at least partially integrated, on or in said device, said nozzle comprising:
    means 4a for supplying at least one fluid 5, an annular ejection channel 4b ending in an annular ejection slot 4c, an external wall 4d and an internal wall 4e delimiting between them said ejection channel annular 4b, said external wall 4d comprising at least one injection orifice 40d of the or each fluid in said annular ejection channel 4b, said annular ejection slot 4c, and
    - Fixing means 8 allowing the fixing, for example by screwing, of the nozzle 4a on the device so that the annular ejection slot opens to the outside 3 near the front part of the element 1 in surrounding the propagation axis X.
    The supply means 4a can consist of one or more chambers or, as can be seen in particular in FIGS. 2, 5 and 6, one or more channels, each channel or each chamber communicating, on the one hand, with a supply in at least one fluid, not shown, and intended to be connected to the nozzle 4, and, on the other hand, with the or one of the ejection orifices 40d.
    Preferably, the annular ejection slot 4c can extend along a circular (FIGS. 1, 2, 3, 4 and 6) or elliptical line.
    Preferably, the annular ejection channel 4b delimited between the internal wall 4e and the external wall 4d can have a frustoconical shape (Figures 1, 2, 3, 4 and 5).
    On the other hand, in order to be able to increase the speed of flow of the or each fluid between its injection point in the annular ejection channel 4b and the annular ejection slot 4c, the present invention can provide that the section transverse flow of the annular ejection channel 4c can decrease, preferably gradually, in the direction of flow of the fluid towards the annular ejection slot 4c (see in particular Figures 4, 5 and 6).
    Furthermore, to impart to the or to each fluid a shape, preferably conical or swirling, and / or a determined speed (s), the present invention can provide that the external wall 4d and / or the internal wall 4e comprise, on their internal face in the annular election channel 4b, reliefs or ribs forming flow guides, for example in the form of a helix.
    The injection port (s) 40d can be located and distributed in the same injection plane (see in particular FIGS. 2 and 5) or in a superposition of injection planes (FIG. 6) intersecting the axis of the channel d perpendicularly. annular election. Each injection plane can include one or more injection ports 40d.
    In the case where the device comprises at least two injection planes (FIG. 6), the injection port (s) 40d of one of the injection planes can be offset angularly with respect to the injection port (s) 40d on the other or another injection plan.
    In the or each injection plane, the injection port (s) 40d may be located on a circle or an ellipse centered on the axis of the annular ejection channel 4b. It will be understood that the aforementioned angular offset between two injection orifices belonging to two separate injection planes will correspond to an angular position of the injection orifice 40d of one of said injection planes, on its line, different from the angular position of the injection orifice of the other injection plane.
    The axis of the injection orifice (s) can be oriented so as to be perpendicular to the axis of revolution or of symmetry X, that is to say extend if necessary in the or one of the injection planes, and / or to cut said axis of revolution or of X symmetry and / or to pass close to the latter.
    In a preferred embodiment, so as to be able to adjust the flow cross section of the annular ejection channel 4c to, in particular, modify the flow speed of the or each fluid in the annular injection channel 4b, the device may further comprise displacement and adjustment means making it possible to adjust the spacing between the internal wall 4e and the external wall 4d. Preferably, the inner walls 4e and outer 4d can be adjustable in spacing from one another by means of an adjustment ring 4f during its rotation (Figures 1 and 4).
    The or each fluid can be air, an inert or active gas or a liquid such as water.
    The figures also show that such an apparatus for transmitting and / or receiving electromagnetic waves, according to the present invention, equipped with such a fluid-blown protection device according to the present invention, complementary fixing means 9 capable and intended to cooperate with the fixing means 8 of the blowing nozzle
    - 10 fluid, and / or a receiving space integrating all or part of the fluid blowing nozzle, to allow its attachment or integration on or in said device so that so that the annular ejection slot 4c opens to the outside in front of or at the height of the front part of the element 1, preferably in front of or at the height of the front part of the element 1 by surrounding the axis of propagation X or by being centered on the latter.
    If one refers in particular to FIG. 4, it can be seen that the fixing means 8 of the blowing nozzle can consist of at least one threaded part of the blowing nozzle 4, for example a threaded or tapped part of its external surface and the complementary fixing means 9 of the device can consist of a threaded or tapped part of the device, for example a threaded or tapped part of the internal surface of a front opening 13 passing through a front side 14 of a housing. of the device, said front opening 13 allowing for example the exit of a laser beam forming the electromagnetic waves passing through the element to be protected 1 or the entry of a light ray into the housing, said element being able to be placed and maintained , for example, in said front opening 13 by closing it. In addition, if necessary, the adjustment ring 4f, preferably of annular shape, can also be arranged in the front opening 13 and be accessible from the outside to carry out the adjustment.
    To ensure the maintenance of the element 1 in the device, for example in the aforementioned front opening 13, and the sealing at the level of said element 1 between the outside 3 and the inside 2 of the device, such device may include a seal 10, a compression part 11 of said seal 10 and a shoulder 12. The shoulder 12 can be made, if necessary, in the front opening
    13. In addition, the seal 10 can be located and compressed, if necessary in the front opening 13, between said compression part 11 and the element 1 to be protected which can come into abutment against said shoulder 12 of the side opposite to the compression piece 11. Preferably the shoulder 12 can be located on the outside side 3.
    Element 1 can be made removable, if necessary in the front opening 13, so that it can be changed or cleaned as required.
    Element 1 can be made from a material capable of passing all or part of the electromagnetic waves emitted or received
    - 11 per device. For example, such a material, which may be a window pane or a glass, may be transparent to electromagnetic waves of wavelengths or frequencies included, for the fields, for example of the visible, infrared, laser or ultraviolet, preferably of between lOnm and 30000 nm and, for the acoustic domain, preferably between 50 Hz and 100 kHz. Such a window or such a glass allows, for example in the case of an application to a laser treatment head or a hybrid laser treatment head, to protect the interior of the apparatus, for example the emitter formed by a source. laser, external environmental constraints such as dust or other particles from the operation of treating the surface to be treated. Indeed, such a window or such a glass is directly exposed by its front part in contact with the outside to particles, dust or weld projections and stores part of the energy of the laser beam. Thanks to the present invention, it is possible to protect the pane or glass 1 from external environmental constraints and simultaneously to evacuate the excess calories absorbed by the pane or glass 1.
    In another application, such a device can consist of an image acquisition device such as a camera comprising a sensor, for example known as a CCD or CMOS sensor, and element 1 can also consist of a glass or other material capable of allowing light waves from the external environment to pass to the sensor, either through the sensor itself. It is then possible to imagine any device comprising any type of sensor or transmitter, for example also an ultrasonic transmitter.
    In these devices for laser processing or for image acquisition, element 1 can consist of the corresponding sensor or transmitter.
    The present invention thus makes it possible:
    - to create a protective and fluid thermal regulation envelope, forming a barrier or shield, in front of the front part of the element to be protected, protecting it from the constraints of the external environment such as particles, dust or projections,
    - to favor a heat exchange between said protective envelope and fluidic thermal regulation and element 1 making it possible to maintain the latter under controlled thermal conditions and thus
    - 12minimize the effects of thermal expansion as well as the premature aging of said element 1.
    Of course, the invention is not limited to the embodiment described and shown in the accompanying drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without thereby departing from the scope of protection of the invention.
    权利要求:
    Claims (21)
    [1]
    1. A method of protection, by fluid blowing, of an apparatus for transmitting and / or receiving electromagnetic waves, said apparatus comprising an element (1) to be protected having a rear part in contact with the interior (2) of the apparatus and a front part in contact with the outside (3), said element being capable of allowing said electromagnetic waves transmitted or received to pass along an axis of propagation (X), characterized in that it consists, from '' a fluid-blown protection device fitted to said device and comprising an annular ejection channel (4b) ending in an annular ejection slot (4c) opening to the outside (3) in front of or at the level of the front part of the element (1), preferably in front of or at height the front part of the element (1) by surrounding the axis of propagation (X) or by being centered on the latter:
    - injecting at least one fluid (5), at one or more injection points (40d), into the annular ejection channel (4b) to form a protective flow (6),
    - to eject outside and, preferably towards the axis of propagation (X), through the annular ejection slot (4c), the protective flux (6) thus formed so as to create in front of the front part of the element (1), an aeraulic or hydraulic protective and thermal regulation envelope (7) having the effect of preventing particles coming from outside from reaching said element and of allowing a heat exchange between the latter and said flow regulating its temperature.
    [2]
    2. Method according to claim 1, characterized in that it consists, from the annular ejection channel (4b) adapted, to effect the flow of or each fluid in said annular ejection channel (4c) up to the annular ejection slot (4c) by giving it a shape, and / or a determined speed (s).
    [3]
    3. Method according to claim 2, characterized in that it consists in carrying out the flow of or each fluid in the annular ejection channel (4b) by imparting to it a conical or vortex shape.
    [4]
    4. Method according to any one of claims 1 to 3, characterized in that it consists in carrying out the flow of the or each
    - 14 fluid by increasing its speed between its injection point in the annular ejection channel (4b) and the annular ejection slot (4c).
    [5]
    5. Method according to any one of claims 1 to 4, characterized in that it consists in injecting the or each fluid into the annular ejection channel at one or more injection points distributed in the same plane or in a superposition of injection planes perpendicularly intersecting the axis of revolution or symmetry (X), so as to inject the or each fluid into the annular ejection channel (4b) in a stepped fashion along said axis .
    [6]
    6. Method according to claim 5, characterized in that it consists in injecting a first fluid in one of the injection planes and in injecting a second fluid, preferably of viscosity different from that of the first fluid, in the other or another injection plan.
    [7]
    7. Method according to any one of claims 5 to 6, characterized in that it consists in injecting the or each liquid in one of the ejection planes with a different angle of attack or incidence (e) that of the or each liquid injected into the other or another ejection plane.
    [8]
    8. Method according to any one of claims 5 to 7, characterized in that it consists in carrying out an injection into several injection planes and in that it consists in carrying out an angular offset between the injection points from one of the injection planes and the injection points from the other or from another injection plan.
    [9]
    9. Method according to any one of claims 1 to 8, characterized in that it comprises a step prior to injection consisting in adjusting the flow cross section of the annular ejection channel 4c to modify the speed d flow of or each fluid.
    [10]
    10. Protective device with fluid blowing, suitable for implementing the method according to any one of claims 1 to 9, suitable and intended to equip an apparatus for transmitting and / or receiving electromagnetic waves comprising an element ( 1) of protection having a rear part in contact with the interior (2) and a front part in contact with the exterior (3), said element being capable of allowing said electromagnetic waves transmitted or received to pass along an axis of propagation ( X), characterized in that it comprises a fluid blowing nozzle (4) capable of being mounted, or at least partially integrated, on or in said device, said nozzle comprising, on the one hand, means
    - 15d'édée (4a) of at least one fluid (5), an annular ejection channel (4b) ending in an annular ejection slot (4c), an outer wall (4d) and an inner wall ( 4e) delimiting between them said annular ejection channel (4b), said external wall (4d) comprising at least one injection orifice (40d) of the or each fluid in said annular ejection channel (4b), said slot annular ejection (4c) and, on the other hand, fixing means (8) allowing the attachment of the nozzle (4a) on the device so that the annular ejection slot opens to the outside (3 ) close to or in front of the anterior part of the element (1), preferably in front of or at the height of the anterior part of the element (1) by surrounding the axis of propagation (X) or by being centered on the latter.
    [11]
    11. Device according to claim 10, characterized in that the annular ejection slot (4c) extends along a circular or elliptical line.
    [12]
    12. Device according to any one of claims 10 to
    11, characterized in that the annular ejection channel (4b) delimited between said walls has a frustoconical shape.
    [13]
    13. Device according to any one of claims 10 to
    12, characterized in that the flow cross section of the annular ejection channel (4c) decreases in the direction of flow of the fluid towards the annular ejection slot (4c).
    [14]
    14. Device according to any one of claims 10 to
    13, characterized in that or the injection orifices (40d) are located and distributed (s) in the same injection plane or in a superposition of injection planes perpendicularly cutting the axis of revolution or symmetry (X ) ·
    [15]
    15. Device according to claim 14, characterized in that it comprises at least two injection planes and in that the injection port (s) (40d) of one of the injection planes are angularly offset by with respect to the injection orifices (40d) of the other or of another injection plane.
    [16]
    16. Device according to claim 14 or 15, characterized in that, in the or each injection plane, the injection orifice (s) (40d) are located on a circle or an ellipse and in that the axis of revolution or symmetry (X) passes through the center of said circle or said ellipse.
    - 1617. Device according to claim 16, characterized in that the axis of the injection orifice (s) is oriented so as to be perpendicular to the axis of revolution or of symmetry (X) and / or to cut the latter and / or to pass close to said axis.
    [17]
    18. Device according to any one of claims 1 to 17, characterized in that it comprises displacement and adjustment means, such as an adjustment ring (4f), making it possible to adjust the spacing between the wall internal (4e) and the external wall (4d) so as to be able to adjust the flow cross section of the annular ejection channel (4c) to modify the flow speed of the or each fluid in the annular injection channel (4b).
    [18]
    19. Apparatus for transmitting and / or receiving electromagnetic waves comprising a protective element (1) having a rear part in contact with the interior (2) and a front part in contact with the exterior (2) of the apparatus, said element being capable of passing said electromagnetic waves emitted or received along a propagation axis (X), characterized in that it is equipped with a fluid-blown protection device according to any one of claims 10 to 18 and in that it comprises complementary fixing means (9) suitable and intended to cooperate with the fixing means (7) of the nozzle (4) for fluid blowing, and / or a receiving space integrating all or part of the fluid blowing nozzle, to allow its fixing or its integration on or in said device so that the annular ejection slot opens to the outside (3) in front of or at the level of the p anterior part of the element (1), preferably in front of or at the height of the anterior part of the element (1) by surrounding the axis of propagation (X) or by being centered on the latter.
    [19]
    20. Apparatus according to claim 19, characterized in that it comprises a seal (10) and a compression part (11) of said seal (10) and a shoulder (12) and in that the seal (10) is located and compressed between said compression piece (11) and the element (1) to be protected which abuts against said shoulder (12) on the side opposite to the compression piece (11) so as to maintain the element 1 and the seal at the latter between the exterior (3) and the interior (2) of the device.
    [20]
    21. Apparatus according to any one of claims 19 to 20, characterized in that it consists of a laser treatment head
    - 17 comprising an emitter forming a laser source (13) and in that the element (1) consists either of a window pane, a glass or other material capable of allowing the electromagnetic waves constituting the light radiation emitted by said laser source to pass, or into the transmitter itself.
    [21]
    22. Apparatus according to any one of claims 19 to 20, characterized in that it consists of an image acquisition apparatus, such as a camera, comprising a sensor and in that the element (1 ) consists either of glass, glass or other material capable of allowing light waves from the external environment to pass to the sensor, or of the sensor itself.
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    同族专利:
    公开号 | 公开日
    WO2018029432A1|2018-02-15|
    FR3054971B1|2019-01-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0584589A|1991-09-27|1993-04-06|Mitsubishi Electric Corp|Machining head for laser beam machine|
    DE102006045554A1|2006-09-25|2008-04-03|Keysystech Gmbh|Protective device for the optics of a laser welding scanner|
    DE102012025627A1|2012-09-21|2015-05-28|Trumpf Laser Gmbh|Ring nozzle for a laser processing head and laser processing head with it|
    JP2015157297A|2014-02-24|2015-09-03|株式会社アマダホールディングス|Welding head, laser welding apparatus, and gas nozzle for welding head|
    DE4402000C2|1994-01-25|1996-04-11|Fraunhofer Ges Forschung|Nozzle arrangement for laser beam cutting|
    WO2001038038A2|1999-11-19|2001-05-31|Fronius Schweissmaschinen Produktion Gmbh & Co. Kg|Device for a laser hybrid welding process|JP6659746B2|2018-02-16|2020-03-04|ファナック株式会社|Laser processing head to reduce contamination of protective window|
    CN108941908A|2018-08-27|2018-12-07|常德高迈新能源科技有限公司|The protection-gas welding apparatus of power battery module side plate and welding equipment with it|
    CN111230343B|2020-03-24|2021-12-24|株洲特装智能装备有限公司|Cooling water spraying component for laser cutting, spraying device and laser cutting machine|
    法律状态:
    2017-08-10| PLFP| Fee payment|Year of fee payment: 2 |
    2018-02-16| PLSC| Search report ready|Effective date: 20180216 |
    2018-05-18| GC| Lien (pledge) constituted|Effective date: 20180411 |
    2018-10-08| PLFP| Fee payment|Year of fee payment: 3 |
    2020-05-08| ST| Notification of lapse|Effective date: 20200406 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1657757|2016-08-12|
    FR1657757A|FR3054971B1|2016-08-12|2016-08-12|METHOD OF PROTECTING, BY FLUID BLOWING, AN APPARATUS FOR TRANSMITTING AND / OR RECEIVING ELECTROMAGNETIC WAVES, DEVICE SUITABLE FOR ITS IMPLEMENTATION AND AN APPARATUS EQUIPPED WITH SAID DEVICE|FR1657757A| FR3054971B1|2016-08-12|2016-08-12|METHOD OF PROTECTING, BY FLUID BLOWING, AN APPARATUS FOR TRANSMITTING AND / OR RECEIVING ELECTROMAGNETIC WAVES, DEVICE SUITABLE FOR ITS IMPLEMENTATION AND AN APPARATUS EQUIPPED WITH SAID DEVICE|
    PCT/FR2017/052218| WO2018029432A1|2016-08-12|2017-08-11|Method for protecting, by fluid blowing, an apparatus for transmitting and/or receiving electromagnetic waves, a device suitable for using same and such an apparatus equipped with said device|
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