• 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:
    process chamber with device for insufflation of gaseous fluid. the invention relates to a process chamber (5) with an internal space (39). in the internal space (39) there is a receiving region (15) for workpieces (3). the process chamber (5) comprises a device (17, 19, 25, 29, 33, 37, 35) for the insufflation of gaseous fluid in the internal space (39). the device for insufflation of gaseous fluid in the internal space (39). the device for insufflation of gaseous fluid has at least one injector (17, 19) for the production of a fluid current curtain (21,23) between the opening (12, 14) and the receiving region (15) for parts at work (3).
    公开号:BR112013010030B1
    申请号:R112013010030-3
    申请日:2011-09-16
    公开日:2020-08-04
    发明作者:Dietmar Wieland；Oliver Iglauer；Christof Knüsel；Marius Winkler
    申请人:Dürr Systems Ag；
    IPC主号:
    专利说明:

    DESCRIPTION
    [0001] The invention relates to a process chamber, with an internal space, comprising a receiving region for workpieces, with an opening for feeding workpieces and with a dispersive for the insufflation of gaseous fluid in the internal space.
    [0002] In finishing facilities for varnishing and coating vehicle chassis, for drying vehicle chassis that have just been varnished or coated with corrosion protection, drying facilities are used. These drying facilities have a process chamber formed as a drying tunnel, in which hot air is injected. There is a drying zone in the drying tunnel. The drying zone is a receiving area for parts working in the form of a vehicle chassis. For vehicle chassis, they are moved on a conveyor device through the drying tunnel. The varnish or coating layer of the vehicle chassis to be dried can be damaged by impurities, particularly dust particles. In addition, through an opening for feeding workpieces, gaseous fluid and, with it, heat, can escape from the internal space.
    [0003] It is the task of the invention to provide a process chamber, with an internal space, at least temporarily open, in which efficient thermal separation of this internal space from the neighborhood is made possible with particularly simple means.
    [0004] This task is solved by a process chamber of the type mentioned above, in which the device for insufflation of gaseous fluid contains at least one injector or at least one orifice for production and a curtain of fluid current between the opening and the receiving region for workpieces. The injector or orifice preferably serves as an outlet for heated air above ambient temperature and / or condensed above ambient pressure (or a correspondingly process inert gas such as CO2 or N2) particularly in the chamber The process fluid contains a gaseous fluid, which is associated with a temperature level of more than 100 ° C or a differential temperature for the vicinity of the process chamber of more than 50 ° K. In one example of an embodiment, the fluid is fed into the process chamber approximately, perpendicularly from top to bottom. In another example of an embodiment, the fluid entering the injector has a higher or lower temperature of more than 20 ° K than the fluid contained (approximately immobile) in the process chamber. In addition, reference is made mainly to a rigid or adjustable injector geometry, and the invention, in each case, can also be carried out with one or more simple orifices.
    [0005] The receiving region for workpieces is preferably configured in the form of a tunnel. It features a bottom as well as a ceiling. Because at least one injector is configured as a slit injector, with a substantially rectangular outlet cross section, the gaseous fluid can be fed through the ceiling of the receiving region, with an oblique current direction in relation to the bottom, such that the side of the fluid stream curtain facing the inlet opening forms a vortex of air stream, which is mixed, at least partially, with injected fluid.
    [0006] An idea of the invention is, in particular, that the fluid curtain can be produced with a reduced energy expenditure, when the gaseous fluid injected through the at least one injector in the internal space is guided in a guide contour, which stresses into the internal space. It is particularly advantageous when this guide contour can be moved. With this, it is possible to adjust the fluid current curtain with respect to the horizontal. Preferably, an angle is set between 90 ° and 40 ° between the exit and horizontal direction. In particular, by moving the guide contour, it can be obtained that the workpieces are not damaged when entering or leaving the process chamber.
    [0007] It is particularly advantageous when on the side of the guide contour facing the opening there is a wall, which defines a mixing chamber with the guide contour. This mixing chamber is positioned in such a way that on one side facing the opening (that is, from the internal space of the process chamber to the outside) of the fluid curtain, the fluid stream vortex formed is mixed with air from the region of the opening. Here, it is aspirated from the gaseous fluid, which flows through the injector or orifice.
    [0008] The wall may have one or more openings for the passage of circulated air in the region of the opening.
    [0009] Due to the fact that on one side of the guide contour away from the mixing chamber, a secondary chamber is formed that works as a “dead space” for gaseous fluid, it can be guaranteed that the stream of gaseous fluid that left the injector or orifice, be guided along the guide contour, without a chain break. In "dead space", preferably, lower current speeds prevail than outside dead space. By arranging an additional guide wing in the mixing chamber, it can be obtained that large quantities of fluids are returned from the current vortex to the fluid curtain.
    [00010] Due to the fact that on the side of the guide wing facing the entrance opening, a front wall is arranged, which defines with a guide contour a retention space, air circulated from the entrance opening region, which is guided in the region of the guide wing to an edge region of the internal space, it can be retained, before an exit to the outside.
    [00011] The front wall advantageously has one or more openings for the passage of circulated air in the region of the inlet opening. The at least one injector may have a device for adjusting the amount of fluid current flowing through the injector. Because several injectors are provided with a device for adjusting the amount of current for fluid flowing through the injector, the fluid current curtain can be regulated differently in different sections between the inlet opening and the receiving region for parts to work.
    [00012] The device for the insufflation of gaseous fluid may have a heating device for heating the gaseous fluid. With this, it can be obtained that in the region of the process chamber openings no condensate is formed, for example, condensation water. The process chamber is suitable for use in a drying and / or curing installation. In particular, the process chamber can be integrated into a varnishing plant.
    [00013] In the process chamber the fluid curtain is produced with gaseous fluid, which is ordered with pressure and is guided by an injector. In this case, in the mixing chamber, disposed adjacent to the injector, air from the region of an opening in the process chamber is mixed with the gaseous fluid that exits the injector. The gaseous fluid guided through the injector is guided along a guide contour that limits the mixing chamber. This guide contour separates the mixing chamber from a secondary chamber disposed adjacent to it, which functions as a dead space for gaseous fluid.
    [00014] The process chamber can be described, in particular, in such a way that a stream of gaseous fluid guided through an injector is strangled and / or interrupted to produce a fluid stream curtain between the opening and the region of reception for workpieces and / or in which the direction of the fluid curtain is changed when a workpiece is moved through the opening. This ensures that the fluid stream curtain does not damage the coating surface of workpieces, which are moved into and out of the process chamber.
    [00015] In the following, the invention is explained in more detail by means of examples of modality represented schematically in the drawing.
    [00016] Show:
    [00017] Fig. 1 a drying installation for vehicle chassis;
    [00018] Fig. 2 is a longitudinal section of a drying installation compartment;
    [00019] Fig. 3 is a three-dimensional view of the compartment;
    [00020] Fig. 4 the current conditions for air in the compartment region;
    [00021] Fig. 5 is a longitudinal section of another penstock for a drying installation;
    [00022] Fig. 6 and Fig. 7, as well as Fig. 8 sections of other longitudinal cuts of alternative modalities for compartments in a drying installation;
    [00023] Fig. 9 a cross section of a drying tunnel in a drying installation; and
    [00024] Fig. 10 is a longitudinal dimension of another compartment.
    [00025] Installation 1 shown in Fig. 1 for drying metal workpieces is designed, in particular, for vehicle chassis 3. Installation 1 comprises a process chamber formed as a drying tunnel 5. Through the drying tunnel 5, the vehicle chassis 3, which are mounted on brakes 7, can be moved by means of a conveyor device 9. The conveyor device has an electric drive 0. The drying tunnel 5 is covered with sheet metal. It has an entrance compartment 11, with an opening 12 and an exit compartment 13, with an opening 14. The drying tunnel 5 comprises a drying section 15, which is located between the entrance behavior 11 and the exit compartment 13. Drying section 15 is a receiving region for workpieces. The drying section 15 is preferably configured in such a way that approximately fifteen vehicle chassis 3 which have just been coated with a varnish and / or a solvent-containing substrate can be dried in them more or less simultaneously. For this purpose, the drying section 15 is designed, for example, with a length L = 40 m, an interior width b, with 1.40 m <b <1.60 m and a headroom h, with 2.60 m <h <2.00 m. In an example of a particularly preferred modality, at a cycle distance of 5.2 m, thirty units per hour and 0.5 hour of residence time, a tunnel length of 78 m results (outer width b: 3 m to 4, 6 m, height external h: 2.8 m to 3.3 m). In the drying section 15, air is circulated for drying by means of a fan 61. To keep the air for drying at an unchanged temperature, in this case, the air is guided by a heating device 63. To discharge the gas atmosphere in the drying tunnel 5 the varnish solvent or vehicle chassis coatings, in installation 1 there is an exhaust air pipe 65, which feeds solvent-loaded air from the drying tunnel 5 to a purification reactor 67.
    [00026] In the inlet compartment 11 and in the outlet compartment 13 of the drying tunnel 5 there are in each case an injector 17, 19 for the production of a fluid current curtain 21, 23. The injectors 17,19 are filled with fresh air through a fan, which acts as a condenser for fresh air 25, 27, through a chamber 29, 31 above the drying tunnel ceiling 5. The injectors 17, 19 preferably have a narrow opening 33, 35 , in the form of a slit, which extends substantially over the width of the drying tunnel. Slit-shaped opening 33 35 of injectors 17, 19 exits into the internal space 39 of the drying tunnel 5. The fluid leaving the injectors 17, 19 is guided on a guide plate with a guide contour 211 into the internal space drying tunnel. To advantageously detect the temperature of the fluid supplied through the injectors 17, 19 to the internal space 39, a temperature sensor 569, 71 is located in the guide contour 211.
    [00027] The fluid curtain 21, 23 preferably extends in each case at an angle of 40 ° <to <60 ° in relation to the horizontal 37. It is directed towards the internal space 39 of the drying tunnel 5 The fluid stream, which flows from the injectors 17, 19, widens, in this case, towards the bottom 41 of the drying tunnel 5. With increasing distance from the opening 33, 35 of the nozzles 17, 19, the current speed of fresh air as a gaseous fluid, which forms the fluid current curtain 21, 23, decreases. The fluid stream curtain 21, 23s for the gas atmosphere in the internal space 39 of the drying tunnel 5 of the ambient air 42.
    [00028] For the detection of the solvent concentration in the gas atmosphere of the drying tunnel 5, a solvent sensor 73 is arranged in the drying section 15. The gaseous fluid fed to the injectors 17, 19 in the form of air is previously heated in a heating device 43, 44 for a desired process temperature Tsoii, preferably within a temperature range of 200 ° C <Tsoii 250 ° C. Because the fluid stream curtain 21, 23 consists of fresh air, it can be guaranteed that a lower explosion limit for organic solvents is not exceeded in the drying zone 15 of the drying tunnel 5. Preheating of the fed fluid ensures that condensate does not form in the inlet compartment 11 and in the outlet compartment 13 of the drying tunnel 5.
    [00029] In order to observe an explosion limit in the drying zone 15, it is particularly possible that through the injectors 17, 19 a defined amount of fresh air is made available. To adjust the amount of fresh air fed through the injectors to the drying tunnel 5, a control device 45, 47 is advantageously installed in the drying facility. The control fluid 45, 47 is used to adjust the flow of fluid leaving the injectors 17, 19. The fluid flow adjustment takes place depending on the number of vehicle chassis ground by the drying zone 15 of the drying tunnel and based on the signals from the temperature sensors 69, 71 and the solvent sensor 73 The fluid flow, in this case, is adjusted in such a way that in an operation of installation 1, the so-called lower operating limit of the composition of the gas atmosphere in the drying tunnel 5 is not exceeded.
    [00030] Fig. 2 is a sectional view of the inlet compartment 11 of the drying installation 1 of Fig. 1. The injector 17 in the inlet compartment is a slit injector. The injector 17 is fed through a pipe 201 the fresh air heated in the heating device 44 The pipe 201 exits in a chamber 203. In chamber 203 the fresh air is guided through air filters 205 and a guide plate 207 arranged obliquely to the injector 17. The guide plate 207 in component 11 can be moved around a axis of rotation 208 in the direction of arrow 214. The displacement of the guide plate 207 opens an access to the filter 205, so that work can be carried out there. maintenance. The injector 17 has a slit-shaped opening 209. The slit-shaped opening 209 of the injector 17 is arranged backwardly in relation to the ceiling 6 of the drying tunnel 5. This allows that, even at high current speeds, a stream of fluid leaving the injector 17, can be avoided damage and damage to a vehicle chassis lining that has not yet dried, which are moved by the inlet compartment 11 to the drying tunnel 5. Important to avoid such damage is a comparatively large distance from the opening 209 the injector 17 from the bottom 41 of the tunnel drying 5. This can be achieved by a recessed arrangement of the injector 17 in the drying tunnel 5. This ensures that the impulse of the gaseous fluid, which flows from the injector 17, is already so weakened in the half of the drying tunnel, that coatings vehicle chassis correspondents 3 cannot be damaged by the fluid stream curtain 21.
    [00031] The fluid stream 210, which leaves the opening 209 of the injector 17, is guided along the contour 211 of a guide plate that acts as a guide wing, inside the drying tunnel 5. The length L of the contour 211 of the guide plate 207 corresponds to 20 to 40 times the slot width B of the injector opening 209.
    [00032] On the side of the contour 211 facing the inlet opening 213 of the drying tunnel 5 there is a front wall 215. The front wall 215 extends over the width of the compartment 11. The front wall 215 defines with the contour 211 and a first element 212 a mixing chamber 217 for gaseous fluid 219. The mixing chamber 217 is arranged backwardly in relation to the ceiling 6 of the drying tunnel 5. The mixing chamber 217 is located in compartment 11 above the inlet opening 213. The mixing chamber 217 is adjacent to the inlet opening 213. The guide plate with contour 211 separates the mixing chamber 217 from a secondary chamber 216. Secondary chamber 216 opens into the interior 39 of the drying tunnel 5 The secondary chamber formed on the rear side of the guide plate with the guide contour 211, makes the fluid stream 210 guided in the guide contour 211 without breaking the chain, due to the Coanda effect.
    [00033] Fig. 3 is a three-dimensional view of the inlet compartment 11 of Fig. 2. The slit-shaped opening 209 of the injector 17 extends over the entire width of the inlet opening 213 of the drying tunnel 5.
    [00034] The slit opening 209 of the injector 17, in this case, is so narrow that the fluid stream leaving the injector 17 forms a curtain of fluid stream over a wide current region, with outlet speeds many different. This fluid stream, in particular, prevents the introduction of dirt particles 301 from the vicinity of the drying installation 1 shown in Fig. 1, into the drying tunnel 5.
    [00035] Fig. 4 shows with arrows the current conditions for air in the inlet compartment 11 in the plane of a longitudinal section of the drying tunnel 5 of Fig. 1. Fresh air fed to the drying tunnel 5 through the injector 17 in the form of a slit, a fluid curtain 401. on the exit side of the injector 17, starting from the opening 209 of the injector 17, the curtain of fresh air fluid 401, which runs in the direction of the arrows 402, extends in the form of a curved 403 pack for the bottom of the inlet compartment 11.0 pack 403 has a thickness D at height H of the inlet compartment 11, which is determined by the width B of the opening 209 of the injector 17. On the curtain side of the fluid 401 facing the inlet opening 213 of the drying tunnel 5, the fresh air flowing from the injector generates a current vortex 407 of air. In the current vortex 407 the air flows in a current direction identified by the arrows 406 around a center 409. The air in the center region 409 is substantially immobile. The air circulated in the current vortex 407 is mixed, at least partially, with the fresh air injected through the injector 17. The current vortex 407 extends from the floor 41 to the ceiling 6 of the inlet compartment 11.
    [00036] The mixing chamber, defined by the front plate 215 on the side of the guide plate facing the inlet opening 213 and the guide plate, as well as by the first element 212, receives, in this case, a small part of the circulated air in the current vortex 407. In the mixing chamber 217 this air is dragged and mixed largely by the gaseous fluid, which flows from the opening 209 of the injector 17. This increases the volume current of the fluid curtain 401, in the region of the arrows 402 The volume stream of the fluid stream curtain 401 can thus consist of 30% or more of gaseous fluid, which is fed to the fluid stream of the injector 17 through the mixing chamber 217. This has the consequence of the fact that, even with a comparatively small amount of fresh air injected, a curtain of fluid stream 401, which extends to the bottom 41 of the drying tunnel 5.0, of the mixing chamber 217, is thus fed again to the current vortex and 407. This process results in the fact that only a small proportion of the gaseous fluid fed through the injector 17 into the inner space 39 of the drying tunnel 5 exits again through the opening 213 of compartment 11 of the drying tunnel 5. The gaseous fluid that flows from the injector 17 thus reaches, for the most part, according to the direction of the arrows 408, inside the drying tunnel 5. Through the gaseous fluid that flows from the injector 17, it is generated in the region of the opening 213 from the compartment 11 a barrier with air circulated in the current vortex 407. This barrier causes a thermal separation of the internal space 39 of the drying tunnel of the external region. In addition, this barrier also prevents the introduction of dust and dirt particles into the internal space 39 of the drying tunnel 5.
    [00037] Fig. 5 shows a modified embodiment of a 501 compartment for a drying installation. Compartment 501 has an injector 503 for supplying fresh air, with a modified injector geometry compared to compartment 11 of Fig. 1. The injector 503 and a double chamber injector. The injector 503 has a slit-shaped injector opening 505 and a slit-shaped injector opening 507, which in each case extends over the entire width of the ceiling 509 of the inlet compartment 501. The injector 503 comprises a valve rotary control. The control valve 511 can be moved by means of a tapered helical drive. However, to move the control valve, an adjustment mechanism with an axis or cable traction by rotating movement of the control valve is also appropriate, the fresh air fed through chamber 513 to the injector 503, can be guided by opening injector 507, through the injector opening 509 or, simultaneously, through the injector openings 507, 509. This makes it possible to measure the air stream that leaves the injector openings 507, 509. For example, through the control valve it is possible to vary the air flow of injector 503 according to the vehicle chassis position in the region of the entrance opening of a drying tunnel. With this measure, it can be obtained that a layer of varnish applied on a vehicle chassis is not affected by the fluid stream formed with fresh air from the 503 injector. In addition, with the control valve 511, the thickness D of the fluid flow curtain and, thus, the quantity and / or speed of the fresh air fed into the drying tunnel.
    [00038] In a modified configuration of the 501 inlet compartment, an injector with several injector openings and with several control valves can also be provided to adjust a fresh air stream for a drying tunnel.
    [00039] Fig. 6 shows a section of an alternative embodiment for a 601 compartment with an injector 603, to form an air curtain at the entrance or exit region of a drying plant.
    [00040] Injector 603 in compartment 601 is associated with a guide plate 605, which functions as a guide wing, preferably arranged in a rotating manner. The guide plate optionally has an external contour, curved at least in sections. In particular, it extends over the entire width of the injector 603. The swivel guide plate 605 is pivotally mounted on a swivel joint 615 on the roof of compartment 601, at the opening of the injector 603. The swivel guide plate 605 protrudes inside 611 of compartment 601. The length L of the contour of the guide plate 605 corresponds approximately to 20 to 40 times the slot width B of the injector opening. Opposite the rotating guide plate 605, a front wall 609 is arranged in compartment 601 again. The rotating guide plate 605 and the front wall 609 define, together, with a first element 612, also here, a mixing chamber 613 Due to the swiveling of the guide plate 605, the geometry of the mixing chamber 613 in compartment 601 can be modified.
    [00041] For the pivoting movement, an adjustment drive, not shown in more detail, is associated with the guide plate 605. By the pivoting movement of the guide plate 605 according to the double arrow 617, it is possible to adjust an incidence angle ( 3 with respect to the horizontal 616 and, thus, the direction of a fluid current curtain, produced with gaseous fluid from the injector 603, in compartment 601. By rotating movement, the contour of the guide wing formed by the guide plate is displaced , in which the gaseous fluid flowing from the injector 607 is guided, so that the shape of the current vortex can be modified, which is formed based on the fluid coming out of the injector 603 on the side of the guide plate 605 facing the opening 619. Due to the fact that the guide plate 605 is rotated towards the ceiling 608 of the compartment 601, a comparatively flat entrance of gaseous fluid can cause an upward and downward movement of the guide plate 605, the direction of fluid current that co The injector frame can be adapted to the position and geometry of the vehicle chassis, which are moved into the drying tunnel. Thus, it can be obtained that a layer of varnish applied on vehicle chassis, which must be dried in the drying tunnel, is not subjected to blowing and does not suffer any damage in the drying tunnel.
    [00042] Fig. 7 shows a section of another alternative modality for a 701 compartment with an injector 703, to form an air curtain at the entrance or exit region of a drying plant. The injector 703 has a diffuser, which is attached to the narrowed cross section of the injector and thus extends the current cross section to the fluid. The injector 703 with subsequent diffuser therefore has a current channel 704, the cross section of which extends towards the interior 711 of compartment 701. The structure of compartment 701 also corresponds to that of compartment 601 of Fig. 6. Compartment assemblies 601 and 701 corresponding to each other are therefore identified in Fig. 7 with a reference signal increased by the number 100 compared to Fig. 6. Unlike the front wall 609 of compartment 601 in Fig. 6, compartment 701 has a front wall with one or more inlet openings for ambient air. Preferably, the front wall 709 has openings in the form of a sieve-like perforation. This measure also allows the suction and air of an upper region 721 in the vicinity of compartment 701. The air sucked in this way in compartment 701 is preferably mixed with air from a current vortex, which is formed at the opening of the compartment. Subsequently, the air drawn in and a part of the air from the current vortex are mixed in the fluid stream that leaves the diffuser.
    [00043] Fig. 8 shows a section of another alternative embodiment for a compartment 801 with an orifice 803, which has an opening 804, to form an air curtain at the entrance or exit region of a drying plant. The structure of compartment 801 corresponds to that of compartment 701 of Fig. 7. Sets corresponding to each other of compartment 701 and 801 are therefore identified in Fig. 8 with the reference signal increased by the number 00, in comparison with Fig. 7 Unlike the front wall 709 of compartment 701 in Fig. 7, the front wall 809 of compartment 801 is realized with a cavity 816.This measure also allows the intake of air from an upper region 821 in the vicinity of compartment 801 in the current vortex generated by through hole 803, in the compartment opening.
    [00044] Fig. 9 shows a cross section of an entrance or exit compartment 901 of a drying tunnel 900 in a drying installation, with a vehicle chassis 912. The compartment 901 has injectors 903, 905, 907 in shape slots, which are located on the ceiling 910 of compartment 901. The injectors 903, 905, 907 can be ordered with a stream of fresh air through a device not shown in more detail for supplying fresh air. In compartment 901 there are control valves, through which the fresh air stream 909 can be divided into several channels 911, 913 and 915, for the separate order of the injectors 903, 905 and 907 with fresh air.
    [00045] This measure makes it possible to adjust a curtain of fluid current 917 in the openings of a drying tunnel, which can be adjusted differently, according to the passage of working parts, for example, vehicle chassis, over the width B of the opening.
    [00046] Fig. 10 shows a longitudinal section of another compartment 1011 for a drying tunnel in a facility for drying metallic workpieces. According to Fig. 4, the current air conditions in compartment 1011 are also indicated here with arrows. The fresh air fed to the drying tunnel through the slit-shaped injector 1017 produces on the side of the injector 1017 a fluid current curtain 1401. The term “fresh air” can be understood, particularly previously condensed, heated and / or purified air and / or dried, whose state parameters are optimally adjusted.
    [00047] Starting from an opening 1209 of the injector 1017, the fluid current curtain 1401 (of fresh air that runs in the direction of the arrows 1402) extends in the form of a more or less curved club 1403 towards a bottom 1041 of the compartment 1011. On one side facing inlet opening 1213 of compartment 1011 of fluid current curtain 1401, the fresh air flowing from injector 1017 generates a current vortex 1407 of air. In the current vortex 1407, the air flows around a center 1409, with a current direction identified by the arrows 1406. The air in the center region 1409 is subsequently immobile. The air circulated in the current vortex 1407 is mixed, at least partially, with the fresh air injected through the injector 1017. The current vortex 1407 extends from the bottom 1041 to the ceiling 1006 of the inlet compartment 1011.
    [00048] The compartment 1011 has on the side voted for the inlet opening 1213 of a guide plate which has a guide outline in the opening 1009 of the injector 1017 a first wall 1215 in the form of an arc. Guide plate 1211 and first wall 1215 limit and surround, in sections, a mixing chamber 1217 open downward. In the mixing chamber 1217, in the example of the embodiment according to Fig. 10, a chain guide element 1218 is positioned in the form of a “chain wing”, which extends, such as the opening 1009 of the injector 1017, preferably over the entire width of compartment 1011. Guide plate 1211 separates mixing chamber 1217 from secondary chamber 1216. Secondary chamber 1216 functions as a dead space for air, in which there are lower current speeds than in the compartment remaining (except for the center of rotation 1409 of the current vortex, which, in fact, should be neglected).
    [00049] At the bottom 401 of the compartment 1011, in the region of the opening 1213, a silhouette wall 1220 is arranged. The silhouette wall 1220 serves, in particular, as a chain barrier or as a chain guiding element on the bottom side. The silhouette wall 1220 preferably consists of spring steel or other steels resistant to temperature and / or corrosion. The silhouette wall 1220 can be rotated or folded about an axis (horizontal) 1222 according to arrow 1224.
    [00050] The mixing chamber 1217 receives, in this case, according to the invention, a small part donated circulated in the current vortex 1407. In the mixing chamber 1217, this air is guided with the current wing 1218 to the gaseous fluid that runs from opening 1209 of injector 17. It is entrained by gaseous fluid. This increases the volume current of the fluid curtain 1401 in the region of the arrows 1402. The volume current of the fluid current curtain 1401 can thus consist, to a large extent, of gaseous fluid, which is fed to the fluid stream of the injector 1017 through the mixing chamber 1217. This results in the fact that also with a comparatively small amount of fresh air injected, a fluid stream curtain 1401 can be produced, which extends to the bottom 1041 of the drying tunnel .
    [00051] The air from the mixing chamber 1217 is returned in this way, again to the current vortex 1407. This process results in the fact that only a small part of the gaseous fluid fed through the injector 1017 to the internal space 1039 of the tunnel drying again exits through opening 1213 of compartment 1011 of the drying tunnel. The gaseous fluid flowing from the injector 1017 thus reaches, in most part according to the direction of the arrows 1408, into the drying tunnel. Through the gaseous fluid flowing from the injector 1017, a barrier with light circulated in the current vortex 1407 is generated in the region of the opening 1213 of the compartment 1011, which thermally separates the internal space 1039 of the drying tunnel from the external region and, in addition it also prevents dust and dirt particles from entering the drying tunnel. The silhouette wall 1220 at the bottom 1041 of compartment 1011 causes the resulting cylinder 1407 to be comparatively narrow. Only when a workpiece is moved into the drying tunnel, the silhouette wall is briefly folded according to the arrow 1220 towards the bottom 1041.
    [00052] In summary, the following preferred characteristics of the invention should be registered. A process chamber 5 has an internal space 39. In the internal space 39 there is a receiving region 15 for workpieces 3, the internal space 39 having an increased or reduced temperature in relation to the vicinity of the process chamber. The process chamber has an opening 12, 14 temporarily open to the neighborhood, for feeding or unloading workpieces 3. The process chamber comprises a device 17, 19, 25, 29, 33, 37, 35 for insufflation of gaseous fluid in the internal space 39. The device for the insufflation of gaseous fluid has at least one injector 17, 19 for the production of a fluid stream curtain 21, 23 between opening 12, 14 and the receiving region 15 for workpieces 3. The gaseous fluid fed is conditioned in terms of its physical and / or chemical parameters and has a different temperature, particularly in relation to the internal space of the process chamber and / or in relation to the vicinity of the process chamber .
    权利要求:
    Claims (13)
    [0001]
    1. Process chamber (5) with an internal space (39), comprising a receiving region (15) for workpieces (3), configured in the form of a tunnel and which has a bottom (41) and a ceiling ( 6), with an opening (12, 14) for feeding or unloading workpieces (3) and with a device (17, 19, 25, 29, 33, 37 35) for the insufflation of gaseous fluid in the internal space (39), which has at least one injector (17, 19) or orifice (803) for producing a fluid current curtain (21, 23) between the opening (12, 14) and the receiving region (15 ) for workpieces (3), the injector (17,19) or orifice (803) feeding the gaseous fluid to the internal space (39), through the ceiling (6) of the internal space (39), with one direction chain (402) oblique to the bottom (41), along a guide contour (211), characterized by the fact that the guide contour (211), with the wall (215) of an entrance compartment ( 11) or exit compartment (13), which is arranged o on one side of the guide contour (211) which faces the opening (12, 14), limits a mixing chamber (217), which is arranged above the opening (12, 14) so that it is recessed upwards in relation to to the ceiling (6), from which air from the opening region (12, 14) is entrained by the gaseous fluid fed into the internal space (39) by the injector (17, 19) in the form of a slit or orifice (803) and is sucked in for the internal space (39).
    [0002]
    Process chamber according to claim 1, characterized by the fact that the guide contour (606) is formed in a rotating guide wing (605).
    [0003]
    Process chamber according to claim 1 or 2, characterized by the fact that the wall (709, 809) has one or more openings (816) for the passage of circulated air in the region of the opening (12, 14).
    [0004]
    Process chamber according to any one of claims 1 to 3, characterized in that a secondary chamber (216) is formed on one side away from the mixing chamber (217) of the guide contour (211). as dead space for gaseous fluid.
    [0005]
    Process chamber according to any one of claims 1 to 4, characterized in that a guide handle (1218) is arranged in the mixing chamber (1217).
    [0006]
    Process chamber according to any one of claims 1 to 5, characterized in that at least one injector (503) has a device (511) for adjusting the amount of current for fluid flowing through the injector (503) and / or that several injectors (903, 905, 907) are provided with a device for adjusting the amount of current for fluid, which passes through the injector, to adjust differently the fluid current curtain between the inlet opening a and receiving region for workpieces (912) in different sections.
    [0007]
    Process chamber according to any one of claims 1 to 6, characterized in that a rotating current barrier (1220) is provided for controlling a fluid stream formed in the internal space (1039).
    [0008]
    Process chamber according to any one of claims 1 to 10, characterized in that the device for the insufflation of gaseous fluid has a heating device (43, 44) for heating the gaseous fluid.
    [0009]
    9. Drying and / or curing and / or varnishing installation, characterized by the fact that it comprises a process chamber (5) formed according to any one of claims 1 to 8.
    [0010]
    10. Process for operating a process chamber (5), with an internal space (39) that presents a receiving region (15) for workpieces (3), configured in the form of a tunnel, which has a bottom (41 ) and a roof (6), with an opening (12, 14) for feeding or unloading workpieces (3), and with a device (17, 19, 25, 29, 33, 37, 35) for insufflation of gaseous fluid in the internal space (39), which has at least one injector (17, 19) or hole (803) in the form of a slit on the ceiling (6) through which gaseous fluid is blown, for the production of a curtain flow current (21, 23) between the opening (12, 14) and the receiving region (15) for workpieces (3), the gaseous fluid being fed into the internal space (39) with a current direction (402) away from the opening (12, 14), facing the bottom (41) and oblique to the bottom (41), characterized by the fact that on the side of the fluid curtain (21, 23) that is turned for the opening (12, 14) a current vortex (407) of air is generated, mixed at least partially with the injected fluid, which extends from the bottom (41) to the ceiling (6) in an inlet or outlet compartment (11, 13) , a guide contour (211) being provided and the gaseous fluid injected into the internal space (39) through at least one injector (17, 19) or orifice (803), is guided along the guide contour (211 ) to the internal space (39), and on the side of the guide contour (211.1211) facing the opening (213.1213) a wall (215, 1215) is provided, which borders with the guide contour (211 , 1211) a mixing chamber (217, 1217), in which fluid from a current vortex (407, 1407), formed on the side of the fluid curtain (21, 23) facing the opening (12, 14), is mixed with air from the opening region (213, 1213) and aspirated into the internal space (39, 1039) by the gaseous fluid, which flows through the injector (17, 19, 1017) or the orifice (803).
    [0011]
    11. Process according to claim 10, characterized by the fact that the gaseous fluid injected into the internal space (39) through at least one injector (17, 19) or orifice (803), is guided in the guide contour (211 ), without breaking the current.
    [0012]
    Process according to claim 10 or 11, characterized in that the guide contour (606) for adjusting the fluid current curtain (21,23) is rotated.
    [0013]
    Process according to any one of claims 10 to 12, characterized in that the fluid stream curtain (21, 23) is strangled or interrupted between the opening (12, 14) and the receiving region (15) for workpieces (3) and / or that the direction of the fluid stream curtain (21,23) is changed when a particle (3) is moved through the opening (12, 14).
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    MX340114B|2016-06-24|
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    MX2013004743A|2013-07-02|
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    TR201900642T4|2019-02-21|
    DE102010043087A1|2012-05-03|
    EP3147613B1|2018-08-15|
    KR20140009154A|2014-01-22|
    EP3336468B1|2018-11-14|
    PT2633252T|2017-02-22|
    EP3336468A1|2018-06-20|
    EP3147613A1|2017-03-29|
    ZA201303086B|2014-07-30|
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    法律状态:
    2018-05-08| B25D| Requested change of name of applicant approved|Owner name: DUERR SYSTEMS AG (DE) |
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-26| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-06-09| B09A| Decision: intention to grant|
    2020-08-04| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 16/09/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010043087A|DE102010043087A1|2010-10-28|2010-10-28|Process chamber with device for injecting gaseous fluid|
    DE102010043087.0|2010-10-28|
    PCT/EP2011/066154|WO2012055634A1|2010-10-28|2011-09-16|Process chamber with device for injecting gaseous fluid|
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