INSTALLATION WITH A PROCESS CHAMBER AND METHOD FOR OPERATING AN INSTALLATION

专利摘要:
installation with a method chamber for workpieces. the present invention relates to an installation (1), with a method chamber (5), comprising an internal space (39) with a receiving region (15) for workpieces (3). the method chamber (5) has an opening (12, 14) for feeding or unloading workpieces (3). the method chamber (5) is formed with a device (17, 9, 25, 29, 33, 37, 35, 2014) for the insufflation of gaseous fluid in the internal space (39), which has at least one nozzle (17 , 19) or screen for generating a fluid stream curtain (21, 23) between the opening (12, 14) and the receiving region (15) for workpieces (3). the method chamber (5) has a device (74) for supplying fresh air, with which fresh air can be introduced into the receiving region (15) on the side of the fluid stream curtain away from the opening (12, 14 ).
公开号:BR112014024884B1
申请号:R112014024884-2
申请日:2013-04-26
公开日:2021-04-06
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:

[0001] [0001] The present invention relates to an installation with a process chamber, which has an internal space with a receiving region for workpieces and with an opening to supply or remove workpieces, and with an insufflation device of gaseous fluid in the internal space, which comprises at least one nozzle or bulkhead for the generation of a fluid current curtain between the opening and the receiving region for workpieces.
[0002] [0002] Such an installation is known from WO 2010/122121 A1.
[0003] [0003] At production sites for varnishing and coating vehicle bodies, for drying vehicle bodies that have just been varnished or coated with corrosion protection, a drying unit is used. These units have a process chamber formed as a dryer tunnel, in which hot air is blown. There is a drying zone in the dryer tunnel. The drying zone is a reception area for parts working in the form of vehicle bodies. To dry the vehicle bodies, they are moved on a conveyor device through the dryer tunnel. The varnish or coating layer to be dried on the vehicle bodies can be damaged by impurities, particularly dust particles. In addition, through an opening for the supply of workpieces, gaseous fluid and, with it, heat, it can escape from the internal space.
[0004] [0004] It is the task of the invention to provide an installation with a process chamber, which has an internal space with a receiving region for workpieces, which can be at least partially open, in which with simple means a separation is possible efficient thermal energy of that internal space of the neighborhood and in which, at the same time, a sufficient supply of fresh air for the reception region can be guaranteed.
[0005] [0005] This task is solved by an installation of the type mentioned above, which features a device for supplying fresh air to the process chamber, with which fresh air can be introduced into the receiving region on one side of the fluid stream curtain. away from the opening.
[0006] [0006] The term fresh air, in this case, is understood as previously compressed air, heated and / or thermally and / or mechanically purified with a filter and / or dried, whose state parameters are adjusted according to the need. Fresh air can also be, for example, treated exhaust air from a process chamber. In addition, the exhaust air from a thermal energy machine or combustion energy machine can also be fresh air. With the supply of fresh air to the receiving region of the process chamber, it can be guaranteed that the solvent content of the air inside the process chamber when drying workpieces does not exceed threshold values, above which drying methods are harmed and above which combustible solvents in paints, varnishes and, adhesives and / or coatings can cause explosions, because an explosion limit has been exceeded.
[0007] [0007] The invention is based on the idea that at least one air compartment in a process chamber fulfills a dual task in a drying unit: fresh air fed to the air compartments, which generates a fresh air curtain, can serve, on the one hand, to separate the internal space in current and / or thermally from the neighborhood. On the other hand, with the fresh air from the fresh air curtain it can be obtained that the solvent released in drying methods in the process chamber is sufficiently diluted, due to the fact that this fresh air is fed to the process chamber.
[0008] [0008] As the first task is independent of the utilization rate and the second, dependent on the utilization rate, the inventors propose that this dual task of the air compartments be separated. In that case, a fluid volume stream conducted to the process chamber can be reduced or increased according to the use of the process chamber. As fluids of interest, in this case, particularly, fresh air and / or recycled exhaust air. If a stream of fresh air fed to the process chamber of a drying unit is heated to a dryer temperature, adapting the stream of fresh air to use allows a temporary reduction in the stream of fresh air to below maximum value and therefore a reduction in energy consumption.
[0009] [0009] Preferably, the device for supplying fresh air to the installation contains at least one line that communicates with the receiving region, which has an opening for the intake of fresh air and which has a passage control device. The passage control device can comprise, for example, a throttle valve and / or an adjustable blower.
[0010] [00010] The installation may have, in particular, a device for revolving gaseous fluid in the receiving region by a system of circulating air lines that communicates with the receiving region, which is guided by a device for adjusting the temperature, particularly , for heating gaseous fluid in the receiving region. The fresh air fed to the process chamber can, in this case, be fed to the circulating air line system, for example, before or also after a heat exchanger in the device for regulating the temperature. However, it is also possible to supply fresh air in a line section of the circulating air line system, by which circulating air is guided from the process chamber to the temperature regulation device or by which the circulating air with temperature regulated in the device for temperature regulation can reach the process chamber.
[0011] [00011] The installation may also contain a device for supplying fresh air to the receiving region, which has at least one line with an opening for the intake of fresh air, which is connected to the circulating air line system. In this case, a cost-effective circulating air blower can be used alternately or at the same time to transport fresh air. In the circulating air line system, a passage control device is optionally provided, the passage control device being advantageously arranged in an advance channel or a return channel of the circulating air line system. In the system of circulating air lines, a heat exchanger and / or a heating device are also provided, and the heat exchanger, inside the device for supplying fresh air to the receiving region, preferably transmits heat. from an exhaust gas stream to a fresh air stream, and a heating device is preferably connected, for example, with a solar thermal installation and / or with a gas burner.
[0012] [00012] The line with the opening for the suction of fresh air can exit, particularly, in a forward channel or return channel within the system of circulating air lines.
[0013] [00013] The installation may also contain a device for supplying fresh air to the receiving region, which has at least one line with an opening for the intake of fresh air, which is directly connected to the process chamber.
[0014] [00014] The passage control device is preferably part of a control or regulation circuit (main), which supplies the receiving region with conditioned fluid, particularly fresh air and, optionally, exhausted, treated exhaust air. . The passage control device can, in this case, be connected directly or indirectly with a control or regulation circuit, which contains a detection device and a process chamber status parameter and which controls or regulates the amount of fresh air introduced. in the receiving region by means of the passage control device.
[0015] i. teor de carbono e/ou teor de solvente da atmosfera na região de recepção; ii. número e/ou peso e/ou tipo e/ou tamanho da superfície de peças a trabalhar dispostas na região de recepção; iii. número e/ou peso e/ou tipo e/ou tamanho da superfície de peças a trabalhar alimentadas por unidade de tempo à região de recepção; iv. temperatura do ar de escape de um queimador em um dispositivo para regulação de temperatura de ar circulante; v. diferença de temperatura de fluido gasoso, que foi retirado da região de recepção e novamente alimentado à região de recepção; vi. diferença de temperatura de fluido gasoso da região de recepção, que é alimentado a uma câmara de combustão de um queimador em um dispositivo para a regulação e temperatura de ar circulante, e de ar de escape da câmara de combustão do queimador; vii. quantidade de calor por unidade de tempo, que é alimentada à câmara de processo. [00015] The process chamber in the installation may contain a device for monitoring a service of the process chamber, which is configured for the detection of a status parameter of the group indicated below: i. carbon content and / or solvent content of the atmosphere in the receiving region; ii. number and / or weight and / or type and / or size of the surface of workpieces arranged in the receiving region; iii. number and / or weight and / or type and / or surface size of workpieces fed per unit of time to the receiving region; iv. exhaust air temperature of a burner in a device for regulating circulating air temperature; v. temperature difference of gaseous fluid, which was removed from the receiving region and fed back to the receiving region; saw. temperature difference of gaseous fluid in the receiving region, which is fed to a combustion chamber of a burner in a device for the regulation and temperature of circulating air, and of exhaust air from the combustion chamber of the burner; vii. amount of heat per unit time, which is fed to the process chamber.
[0016] [00016] The process chamber in the installation can also be carried out with a receiving region, which is divided into a first receiving region and another receiving region, with the device for insufflation of gaseous fluid in the internal space generating a fluid stream curtain between the first receiving region and the other receiving region.
[0017] [00017] The device for insufflation of gaseous fluid in the internal space of the process chamber contains at least one nozzle or at least one shield for the generation and a fluid current curtain between the opening and the receiving region for workpieces . The at least one nozzle or at least one screen preferably serves as an outlet for temperature for air heated above room temperature and / or compressed above room pressure (or a correspondingly processed inert gas, such as CO2 or N2).
[0018] [00018] The process chamber may contain, for example, gaseous fluid, the temperature of which T is above 100 ° C and / or for which a temperature difference in relation to the surroundings of the process chamber amounts to more than 50 ° Ç. In one example, fluid is introduced approximately vertically, from top to bottom, into the process chamber. In another example of an embodiment, the fluid introduced through the nozzle has a higher or lower temperature around more than 20 ° C than the fluid contained in the process chamber (approximately at rest). In addition, reference is made to a rigid or adjustable nozzle geometry, and the invention can also be carried out, in each case, with one or more simple screens.
[0019] [00019] The internal space of the process chamber is preferably configured in the form of a tunnel. It features a bottom as well as a roof. Because at least one nozzle, as a split nozzle, is equipped with a substantially rectangular outlet cross section, the gaseous fluid can be supplied through the roof of the internal space with an oblique current direction in relation to the bottom, in such a way so that on the side of the fluid stream curtain facing the bottom or the inlet opening a roll of air stream is formed, which is mixed, at least partially, with inflated fluid.
[0020] [00020] An idea of the invention is, in particular, that the fluid stream curtain can be generated with a lower energy expenditure, when the gaseous fluid inflated in the internal space through at least one nozzle, is guided in a guide contour , which protrudes into the internal space. It is especially advantageous when this guide contour can be rotated. With this, it is possible to adjust the fluid current curtain in relation to the horizontal. Preferably, an angle is set between 80 ° and 50 ° between the exit direction and the horizontal.
[0021] [00021] When this angle between the outlet and the horizontal direction is adjusted, the fluid current curtain generates on its bottom side, seen in the current direction, which points to the bottom or to an opening, a chain roller. The fluid stream from the fluid stream curtain is compressed against the gaseous fluid, which is located in the bottom region of the process chamber. The fluid stream from the fluid stream curtain overlaps with the fluid and mixes with it, which leaves the process chamber in the bottom region. Particularly, by displacing the guide contour, it is possible to ensure that workpieces are not impaired when entering or leaving the process chamber.
[0022] [00022] It is particularly advantageous when on the side of the guide contour facing the opening, there is a wall that defines with a guide contour a diffuser, which yesterday a metallic mixing component. With respect to the central current direction of the gaseous fluid of at least one nozzle, the diffuser is configured asymmetrically. The mixing chamber in the diffuser is arranged on the side of the fluid stream out of the nozzle, seen in the direction of the stream, which is pointing downwards.
[0023] [00023] The mixing chamber is positioned in such a way in the diffuser that fluid is mixed on one side of the fluid stream curtain facing the opening (that is, from the inner space of the process chamber to the outside), with air from the region opening. Here, the air is sucked into the roller by the gaseous fluid, which flows through the nozzle or the screen.
[0024] [00024] The wall may have one or more openings for the passage of circulated air in the region of the opening.
[0025] [00025] By the fact that on one side of the guide contour away from the mixing chamber, a secondary chamber is formed, which functions as a "dead space" for gaseous fluid, it can be guaranteed that the gaseous fluid stream, which leaves the nozzle or the bulkhead, it is guided along the guide contour without a chain break. In dead space ", preferably lower chain speeds prevail than outside dead space. By placing an additional guide vane in the mixing chamber, it is possible to obtain that large amounts of fluid are returned from the chain roller to the curtain. of fluid current.
[0026] [00026] Due to the fact that on the side of the guide vane facing the entrance opening, there is a front wall, which defines with a guide contour a retention space, air circulated from the entrance opening region, which is guided in the guide vane region to an edge region of the inner space, is retained, before it goes out into the open.
[0027] [00027] 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 nozzle may have a device for adjusting the amount of current for fluid flowing through the nozzle. Due to the fact that several nozzles are provided with a device for adjusting the amount of current for fluid passing through the nozzle, the fluid current curtain between the inlet opening and the receiving region for workpieces can be adjusted accordingly. different in different sections.
[0028] [00028] The device for the insufflation of gaseous fluid, may have a heating device for heating the gaseous fluid. In this way, it can be obtained that in the region of openings of the process chamber no condensate is formed, for example, condensation water. The process chamber is suitable for use in a drying and / or curing unit. In particular, the process chamber can be integrated into a varnishing unit.
[0029] [00029] In the process chamber the fluid current curtain is generated with gaseous fluid, which is requested with pressure and is guided by a nozzle. In that case, in the mixing chamber, disposed adjacent to the nozzle, air from the region of an opening in the process chamber is mixed with the gaseous fluid flowing from the nozzle. The gaseous fluid guided by the nozzle is guided along a guide contour, which limits the mixing chamber. This guide contour separates the mixing chamber from a secondary chamber, disposed adjacent to it and which acts as a dead space for gaseous fluid.
[0030] [00030] The process chamber can be operated, particularly so that a stream of gaseous fluid guided by a nozzle, 'is strangled or interrupted for the generation of a fluid stream curtain between the opening and the receiving region for parts a work and / or in which the direction of the fluid current curtain is changed, when a workpiece is moved through the opening. This ensures that the fluid stream curtain does not harm the surface of the coating of workpieces, which are moved into and out of the process chamber.
[0031] [00031] In the following, the invention is explained in more detail by means of examples of modality represented schematically in the drawing.
[0032] [00032] They show:
[0033] [00033] Fig. 1 a first drying unit for vehicle bodies;
[0034] [00034] Fig. 2 is a longitudinal section of a penstock of the drying unit;
[0035] [00035] Fig. 3 is a three-dimensional view of the gate;
[0036] [00036] Fig. 4 the current conditions for air in the floodgate region;
[0037] [00037] Fig. 5 is a longitudinal section of another gate for a drying unit;
[0038] [00038] Fig. 6 and Fig. 7, as well as Fig. 8 sections of other longitudinal cuts of alternative modalities for penstocks in a drying unit;
[0039] [00039] Fig. 9 a cross section of a dryer tunnel in a drying unit;
[0040] [00040] Fig. 10 is a longitudinal section of another jam;
[0041] [00041] Fig. 11 a second drying unit for vehicle bodies; and
[0042] [00042] Fig. 12 to Fig. 19 other units mounted alternatively for drying workpieces.
[0043] [00043] The unit 1 shown in Fig. 1 for drying, for example, metal workpieces is configured, especially, for vehicle bodies 3. The unit comprises a process chamber formed as a dryer tunnel. Through the dryer tunnel 5, the vehicle bodies 3, which are mounted on skids [skids] 7, can be moved by means of a conveyor device 9. The conveyor device has an electric drive 0. The dryer tunnel 5 is lined with metal plate. It has an inlet gate 11, with an inlet opening 12 and an outlet gate 13, with a discharge opening 14. A dryer tunnel 5 comprises a drying zone 15, which is situated between the inlet gate 11 and the exit gate 13. The drying zone 15 is a receiving region for workpieces 13. The drying zone is preferably configured in such a way that approximately fifteen vehicle bodies 3 have just been coated with it. varnish or a solvent-containing substrate, can be dried at about the same time. For this purpose, the drying section 15, for example, with the length L = 40 m, an internal width b, with 1.40, <b <2.70 m and an internal height h, with 2.00 m <h <2.60 m. In a particularly preferred modality, at a cycle distance of 5.2 m, 30 units per hour and 0.5 h of dwell time result, a tunnel length of 78 m (external width b: 3 m to 4.6 m, height h, external: 2.8 to 3.3 m). By means of a device 70 for the supply of conditioned gaseous fluid, fluid is fed to the drying section 15 for drying.
[0044] [00044] The device 70 preferably contains a system of circulating air lines 72. The system of circulating air lines 72 is in communication with the receiving region 15 and has an advance channel 75, which functions as an air channel. recirculation of circulating air, and contains a return channel 77, which serves as a return channel for the return of circulating air. The circulating air line system 72 is guided by a heating device 63. In device 70 there is a fan 61, with which the air for drying is blown. With the device 70, the air can be maintained at a temperature defined in the drying zone 15, in a state of circulating air service.
[0045] [00045] Installation 1 contains, in a particularly preferred way, a device 74 and, alternatively or additionally, a device 74 'for the supply of fluid, also in the form of, optionally, conditioned fresh air. The device 74, 74 'has a line 76, 76' with an opening 78, 78 'for the suction of fresh air. In line 76, 76 'there is a passage control device 80, 80', which is configured as a throttle valve. Line 76, 76 'is advantageously connected to the circulating air line system 72.
[0046] [00046] To discharge from the fluid atmosphere in the dryer tunnel 5, solvent evaporated varnish, adhesives or coatings of the vehicle bodies 3, there is a line 65 in installation 1 or also several lines for exhaust air, through the air wanted. solvent-loaded can be conducted from the dryer tunnel 5 to a purification reactor 67.
[0047] [00047] In the entrance gate 11 and the exit gate of the dryer tunnel 5 there is, in each case, a nozzle 17, 19, for the generation of a fluid current curtain 21, 23. The nozzles 17, 19 are supplied with fresh air through a fan that works as a compressor for fresh air 25, 27, through a chamber 29, 31 above the ceiling 6 of the dryer tunnel 5. The nozzles 17, 19 preferably have an opening 33, 35 narrow, slit-shaped, extends substantially over the width of the dryer tunnel 5 or over the width of the inlet or outlet openings 12. 14. The opening 33, 35 in the form of the nozzle 17,19 exits in the internal space 39 of the dryer tunnel 5. The fluid flowing from the nozzles 17, 19 is guided through a diffuser 16,18, to the internal space of the dryer tunnel 5. The diffuser 16, 18 extends in front of the nozzles 17, 19 on the width of the inlet or outlet opening 12, 14. The diffuser 16, 18 is configured asymmetrically in relation to the direction of the curtain d and fluid stream 21, 23 and is limited by a guide plate with a guide contour 211 and a front wall 215 The fluid flowing from the nozzles 17, 19 is guided in the guide contour 211 of the guide plate to the internal space of the dryer tunnel. For an advantageous detection of the temperature T of the fluid supplied to the internal space 39 through the nozzles 17 19, a temperature sensor 69, 71 is located in the guide contour 211.
[0048] [00048] Fluid stream curtain 21, 23 preferably extends in each case at an angle of 50 ° ≤ □ ≤ 80 ° to the horizontal 37. It is directed towards the inner space 39 of the tunnel dryer 5. The fluid stream flowing from nozzles 17, 19 in this case extends from the bottom 41 of the dryer tunnel 5 upwards. With increasing distance from the opening 33, 35 of the nozzles 17, 19, the speed of the fresh air flow, which forms the fluid current curtain 21, 23 as gaseous fluid, decreases. The fluid stream curtain 21, 23 separates the gas atmosphere in the inner space 39 of the dryer tunnel 5 from the circulating air 432. By means of a control device 45, 47, the fluid stream leaving the nozzles 17, 19 is adjusted to a predetermined shape. For the detection of the solvent concentration in the gas atmosphere of the dryer tunnel 5, a solvent sensor 73 is arranged in the drying zone 15. Alternatively or additionally, such a solvent sensor can be arranged in the exhaust air channel 65 The gaseous fluid in the form of air, fed to nozzles 17, 19, is preheated in a heating device 43, 44 to a desired theoretical method temperature, which is preferably in a temperature range of 160 ° C ≤ Theoretical ≤ 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 dryer tunnel 5. Preheating of the fed fluid does that no condensate is formed in the inlet gate 11 and in the outlet gate 13 of the dryer tunnel 5.
[0049] [0057] To ensure that the explosion limit in the drying zone 15 is observed, through the device 74 or 74 'fresh air can be introduced, if necessary, in the drying section 15.
[0050] [0058] For adjusting the amount of fresh air fed through device 74 or 74 'to drying tunnel 5, control device 45 is connected to passage control device 80. With control device 45, fresh air fed through line 76 or 76 ', it is set to a predetermined value. The adjustment of the fresh air supply takes place, in this case, depending on the number detected by means of a sensor 49, 51 as a service state parameter of the process chamber, of the vehicle bodies moved per unit of time by the drying 15 of the dryer tunnel, and / or due to signals from temperature sensors 69, 71 and / or solvent sensor 73 and / or one or more other service state parameters of the process chamber, to provide information on the composition of the gas atmosphere in the dryer tunnel 5 and thereby determining the need for fresh air in a dryer tunnel operation 5. The fresh air supply is adjusted, in this case, in such a way that in an operation of installation 1, the so-called lower explosion limit of the composition of the gas atmosphere in the dryer tunnel 5 is not exceeded.
[0051] [0059] To detect service state parameters of the process chamber, in a modified mode of installation 1, alternatively to sensor 49, a light barrier may also be provided for determining the number of vehicle bodies moved per unit of time through the dryer tunnel 5. Alternatively or in addition to the sensor 49, for this purpose, it is also possible to equip the installation with a measuring device, with which the weight of the vehicle bodies 3 supplied to the dryer tunnel 5 and / can be determined. or providing a device, with which the surface size of vehicle bodies 3 with a surface coating can be detected. In addition, the installation can also be equipped with a device for detecting a digital code installed on working parts, for example, vehicle bodies 3, but also on a skid 7, for example, a bar code, which contains digital information on the size and constitution of a surface coating applied to a work piece, for example, on a vehicle body 3 or on a specific type of work piece.
[0052] [0060] In an installation according to the invention, the determination of the need for fresh air from the process chamber, particularly from a dryer tunnel for motor vehicle bodies, can be carried out by means of a previously defined type of one piece working, for example, as follows:
[0053] [00049] By means of a mass detection device and a device for detecting the number of parts, the mass and the number of parts to be worked, which are found in the process chamber, are determined. For each measured value of the mass of a workpiece, under consideration of oscillations to be expected, which is of interest due to the workpieces treated in the installation, the control device 45 is deposited in this case, a type of workpiece to be work. From the type of workpiece determined on the control device 45, the size of the varnished surface of that workpiece can then be deduced on the control device 45. From the corresponding value for the size of the surface, a need for fresh air from the process chamber, which is necessary so that, for example, the proportion of combustible solvent in the atmosphere, can be determined by the amount of solvent emitted by that surface. process chamber gas 15 is below the explosion limit.
[0054] [00050] According to the invention, in the installation, therefore, it is deduced, particularly from the mass of a workpiece, determined with the mass detection device, a specific workpiece, that is, a certain type of workpiece . For the specific workpiece, an amount of varnish or coating applied on it is then assumed and from that presumed amount of varnish or coating can then be deducted an amount of solvent absorbed by a varnish applied on the workpiece or the coating arranged on it.
[0055] [00051] In combination with the number of parts of the corresponding workpieces in the process chamber, a total amount of solvent can then be determined, which is introduced in the drying of workpieces in the process chamber. Hence, the need for fresh air for the process chamber can then be exterminated, to operate it below the explosion limit.
[0056] [00052] It should be noted that a device for detecting the mass and number of parts of workpieces can be formed according to the invention, for example, as a weighing device, with which the amount of weighing methods is detected .
[0057] [00053] To take into account the thermal inertia of the total installation, it is advantageous to install a detection device and a workpiece parameter, before the process chamber. In the time remaining until a workpiece enters the process chamber, a desired method temperature can then be adjusted in the process chamber, for example, through the amount of fresh air introduced into the process chamber and / or a desired composition of the total gas atmosphere.
[0058] [00054] It should also be noted that the thermal inertia of an installation described above is determined, substantially, by the thermal capacity of the process chamber and the size of the quantities of air fed to and discharged from it.
[0059] [00055] Due to the fact that the devices mentioned above are connected with the control device 45, it is possible to control or regulate the composition of the gas atmosphere by adjusting the fresh air supply according to the requirements of the vehicle bodies 3 arranged in the dryer tunnel 5, in particular, taking into account the solvent content in the surface coating of vehicle bodies 3.
[0060] [00056] Installation 1 can therefore be operated, for example, in the following service states: SERVICE STATUS 1:
[0061] [00057] With the fluid stream curtain 21, 23 a constant volume of fresh air is supplied to the inlet or outlet gates 11, 13, which not only guarantees a sufficient seal of the internal space 39, but also a dilution enough of a solvent content in the atmosphere of the drying zone 15. The dryer tunnel 5 is requested here, regardless of the utilization rate, which is required for the total solvent quantity in full use.
[0062] [00058] As the fluid current curtain 21, 23, a volume flow of fresh air is fed into the inlet or outlet gates 11, 13, which ensures a sufficient seal of the internal space 39. To ensure a sufficient dilution of the content of solvent in the atmosphere of the drying zone 15, by means of the device 74, fresh air is supplied. The amount of fresh air fed with device 74 is adjusted with control device 45 and changes with the use of installation 1. When fresh air is increasingly fed into drying zone 15, a corresponding amount of scaling air needs simultaneously be removed from the dryer tunnel 5 via line 65, so that installation 1 is in balance and in the dryer tunnel 5 no overpressures or underpressures are formed.
[0063] [00059] Fig. 2 is a sectional view of the inlet gate 11 of the drying installation 1 of Fig. 1. The nozzle 17 in the inlet gate 11 is a split nozzle. The nozzle 17 is fed with fresh air heated in the heating device 44 through a pipe 201. The pipe 201 exits in a chamber 203. In chamber 203 the fresh air is guided to the nozzle 17 through air filters 205 and a plate. casing arranged obliquely 206. In the gate 11 there is a guide plate 207. The guide plate 207 and the housing plate 206 can be rotated in the gate 11 about an axis of rotation 208 in the direction of the arrow 214. The displacement of the plate -guide 207 with housing plate 206 opens access to filter 205, so that maintenance work can be carried out there. The nozzle 17 has a slit-shaped opening 209. Slit-shaped opening 209 of the nozzle is arranged backwardly with respect to the ceiling 6 of the dryer tunnel 5. This makes it possible that even at high current speeds of a fluid stream exiting the nozzle 17, damage and damage can be avoided. in a coating of vehicle bodies not yet dried, which are moved by the entrance gate 11 to the dryer tunnel 5. Important to avoid this damage is a comparatively large distance from the opening 209 of the nozzle 17 of the bottom 41 of the dryer tunnel 5 This can be achieved by a recessed arrangement of the nozzle 17 in the dryer tunnel 5. This ensures that the momentum of the gaseous fluid exiting the nozzle 17 is already weakened in the middle of the dryer tunnel, to the point that corresponding bodywork linings of vehicle 3 by the fluid flow curtain are not damaged.
[0064] [00060] The fluid stream 210 leaving the opening 209 of the nozzle 17 is guided along the contour 211 of a guide plate 207, which acts as a guide vane, into the dryer tunnel 5. The length L of the contour 211 of the guide plate 207 preferably corresponds to 20 to 40 times the width of the slot B of the nozzle opening 209.
[0065] [00061] On the side of the contour 21 facing the inlet opening 213 of the dryer tunnel 5, there is a front wall 215. The front wall 215 extends over the width of the gate 11. The frontal wall215 borders with a contour a ridge element 212 and the contour 211 of the guide plate 207, the diffuser 16. The diffuser 16 is configured asymmetrically with respect to the main current plane 202 of the fluid, which exits the nozzle 17. The main current plane 202 and the contour of the guide plate 211 are arranged at each other under the angle φ. The diffuser section 16, which is located on the side facing the front wall 215 of the symmetrical plane204 to the outline of the guide plate 21 with respect to the main current plane 202 and which subtends with the outline of the guide plate 211 the angle 2φ, functions as a mixing chamber 217 for gaseous fluid 219. The mixing chamber 217 is arranged backwardly with respect to the ceiling 6 of the drying tunnel 5. Diffuser217 is located in gate 11, above the inlet opening 213. The chamber mixing chamber 217 is adjacent to inlet opening 213. The contoured guide plate 211 separates mixing chamber d217 from a secondary chamber 216. Secondary chamber 216 with a dead space for air from the dryer tunnel 5 opens to the interior 39 of the dryer tunnel 5. The secondary chamber formed on the rear side of the guide plate with the guide contour 211 causes the fluid stream 210 to be guided in the guide contour 211, due to the strain effect, without breaking due.
[0066] [00062] Figure 3 is a three-dimensional view of the entrance gate 11 of Fig. 2. The slit-shaped opening 209 of the nozzle 17 extends over the entire width of the entrance opening 23 of the dryer tunnel 5. The opening in the form of a slit 209 of the nozzle 17, in this case, it is so narrow that the fluid stream leaving the nozzle 17 forms over a wide region of current, with different outlet speeds, a fluid current curtain. This fluid stream prevents, in particular, the introduction of impurity particles 301 from the vicinity of the drying unit 1 shown in Fig. 1 into the dryer tunnel 5.
[0067] [00063] Fig. 4 shows with arrows the current conditions for air in the inlet gate 11 in the plane of a longitudinal section of the dryer tunnel 5 of Fig. 1. Fresh air fed to the dryer tunnel 5 through the nozzle 17 split causes a curtain of fluid stream 401. on the outlet side of the nozzle 401. Starting from the opening 209 of the nozzle 17, the curtain of fluid stream 401 of fresh air running in the direction of arrows 402 in the form of an apple 403 curved at the bottom 41 of the gate Inlet 11. The mace 403 has a thickness D at the height H of the center of the inlet gate 11, which is determined by the width B of the opening 209 of the nozzle 17. On the side facing the entrance opening 213 of the dryer tunnel 5 of the fluid stream curtain 401, the fresh air flowing from the nozzle 17 generates a stream stream 407 of air. In the current roller 407 the light flows in a direction and current identified by the arrows 406, around a center 409. The air in the center region 409 is substantially immobile. The air circulated in the chain roller 407 is mixed at least partially with fresh air blown through the nozzle 17. The chain roller 407 extends from the bottom 41 to the roof of the inlet gate 11
[0068] [00064] From the guide plate 211, on the one hand, as well as the front plate 215, which is arranged on the side facing the inlet opening 213 of the guide plate 211, on the other hand, a diffuser 16. The diffuser is formed. 16, in this case, it receives, in its mixing chamber 217, preferably, a part of the air circulated in the chain roller 407. In the mixing chamber 217 this air is drawn into a part of the gaseous fluid that flows from the opening 207 of the nozzle 17, in the manner of a Venturi effect, and mixed. This increases the volume flow of the fluid flow curtain 401 in the region of the arrows 402. The volume flow of the fluid flow curtain 401 can thus constitute 30% or more, of gaseous fluid, which is fed to the flow current. fluid flowing from the nozzle 17 through the mixing chamber 217. This results in the fact that even with comparatively small amounts of fresh air blown, a fluid curtain can be generated that extends to the bottom 41 of the dryer tunnel 5.
[0069] [00065] The air from the mixing chamber 217 is fed in this way to the chain roller 407. This method results in the fact that only a small proportion of the gaseous fluid fed through the nozzle 17 to the internal space 39 of the dryer tunnel 5, it exits again through opening 213 of gate 11 of the dryer tunnel 5. The gaseous fluid, which flows from the nozzle 17, therefore arrives, for the most part, according to the direction of the arrows 408, inside the dryer tunnel 5. By gaseous fluid flowing from the nozzle 17, a barrier is generated in the region of the opening 213 of the gate 11 with the air circulated in the chain roller 407. This barrier causes a thermal separation of the internal space 39 of the dryer tunnel 5 in the region external. In addition, this barrier also prevents the introduction and dust and particles of impurities into the internal space 39 of the dryer tunnel 5.
[0070] [00066] Fig. 5 shows a modified form of a gate 501 for a drying unit. Gate 501 has a nozzle for supplying fresh air, with a modified nozzle geometry compared to gate 11 of Fig. 1. Nozzle 03 is a double chamber nozzle. The nozzle 503 has a slit-shaped nozzle opening 505 and a nozzle-shaped nozzle opening 507, which in each case extends over the entire width of the ceiling 509 of the inlet gate 501. The nozzle 503 comprises a rotary control valve 11. The control valve 511 can be moved by means of a spindle drive. But, to move the control valve, an adjustment mechanism with shaft or cable pull is also appropriate. By rotating the control valve 511, the fresh air fed to the nozzle 503 through the chamber 513 can optionally be guided through the nozzle opening 507, the nozzle opening 509 or the nozzle openings 507, 507 at the same time. This makes it possible to measure the air flow coming out of the nozzle openings 507, 509. For example, using the control valve 511 it is possible to vary the air flow through the nozzle 503 according to the position of the vehicle bodies in the opening region. entrance to a dryer tunnel. With this measure it can be obtained that a layer of varnish applied on a vehicle body is not affected by the fluid stream formed with fresh air from the nozzle 503. In addition, with the control valve 511 the thickness D of the curtain can be adjusted. fluid flow and, thus, the quantity and / or speed of the fresh air fed into the dryer tunnel.
[0071] [00067] In a modified configuration of the 501 inlet gate, a nozzle with several nozzle openings and with several control valves can also be provided to adjust a freeway flow for a dryer tunnel.
[0072] [00068] Fig. 6 shows a section of an alternative embodiment for a gate 601 with a nozzle 603, to form an air curtain at the entrance or exit region of a drying unit.
[0073] [00069] A nozzle 603 in gate 601 is associated with a guide plate 605, which acts as a guide reed, 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 nozzle 603. The swiveling guide plate 605 in the opening 607 of the nozzle 603 is rotatable in the roof 608 of the gate 601 in a rotating joint 615. The guide plate 605 swiveling towards the interior 611 of the gate 601.
[0074] [00070] The length L of the contour of the guide plate 605 corresponds approximately to 20 to 40 times the slot width B of the nozzle opening. Opposite the rotating guide plate 605, a front wall 609 is arranged in the gate 601 again. The rotating guide plate 605 and the front wall 609 define, together with a ridge element 612, here also a diffuser, with a chamber mixing 613. Due to the displacement of the guide plate 605, the geometry of the diffuser and mixing chamber 613 in penstock 601 can be modified.
[0075] [00071] For the displacement, an adjustment drive is associated with the guide plate 605, which is not shown in more detail. By moving the guide plate 605 according to the double arrow 617, it is possible to adjust an incidence angle □ in relation to the horizontal 616 and, thereby, adjust the direction of a fluid current curtain generated with gaseous fluid from the nozzle 603, in the holds 601. By displacement, the guide plate 605 is displaced, in which the gaseous fluid exiting nozzle 607 is guided. With this, the shape of the chain roller, which is formed by the fluid coming out of the nozzle 603 on the side of the guide plate 605 facing the opening 619 of the gate 601. can be modified. Because the guide plate 605 is displaced for the roof 608 of the gate 601, a comparatively flat inlet of gaseous fluid can be obtained in the gate. By the upward and downward movement of the guide plate 605, the current direction of the fluid leaving the nozzle can be adapted to the position and geometry of vehicle bodies, which are moved by the gate 601 into the dryer tunnel. Thus, it can be obtained that the fluid that leaves the nozzle is not deflected by the vehicle bodies towards the opening 619 and that a layer of varnish applied on a vehicle body, which must be dried in the dryer tunnel, is not blown and do not suffer any damage to the dryer tunnel.
[0076] [00072] Fig. 7 shows a section of another alternative embodiment for a gate 701 with a nozzle 703, to form an air curtain at the entrance or exit region of a drying unit. The nozzle 703 comes out in a diffuser section, which is attached to the narrowed cross section of the nozzle and, thus, expands the current cross section for the fluid. The nozzle 703 with an attached diffuser section therefore has a current channel 704, the cross section of which extends into the interior 711 of the gate 701 in a volume that acts as a diffuser, in which a mixing chamber 713 is located.
[0077] [00073] The structure of gate 701 corresponds, moreover, to that of gate 601 of Fig.6. Corresponding structural sets of penstock 601 and 701 are characterized, therefore, in Fig. 7 with reference signs increased by the number 100 in comparison with Fig. 6. Unlike the front wall 609 of penstock 601 in Fig. 6, penstock 701 has a front wall 709 with one or more inlet openings for circulating air. Preferably, the front wall 709 has openings in the form of a sieve-like perforation. This measure also allows the aspiration of air from an upper region 721 in the vicinity of penstock 701. The air sucked in this way into the jam 701 is preferably mixed with air from a chain roll, which is formed at the opening of the floodgate. Then, the air drawn in and a part of the air in the chain roller are mixed in the fluid stream that leaves the diffuser.
[0078] [00074] Figure 8 shows a section of another alternative modality for a gate 801, with a bulkhead 803 that has an opening, to form an air curtain in the region of entry or exit of a drying unit. The structure of gate 801 corresponds to that of gate 701 of Fig.7. Structural assemblies of penstock 701 and 801 corresponding to each other are therefore characterized in Fig. 7 with reference signs increased by the number 100 compared to Fig. 7. The front wall 809, the ridge element 812 and the plate guide 805 here also limit a diffuser, which comprises a mixing chamber. Unlike the front wall 709 of the gate 701 in Fig. 7, the front wall 809 of the gate 801 is made with a notch 816. This measure also allows the reception of air from an upper region 821 in the vicinity of the gate 801 in the generated chain roller through the bulkhead at the gate opening.
[0079] [00075] Fig. 9 shows a cross section of an entrance gate or exit of a dryer tunnel in a drying unit, with a vehicle body 912. Gate 901 has nozzles 903, 905, 907 in the form of a slit , which are found in the roof 910 of gate 901. The nozzles 903, 905, 907 can be ordered through a device not shown in more detail with a fresh air flow 909, for supplying fresh air. In the gate 901 there are control valves, by means of which the fresh air stream 909 can be distributed between different channels 911, 913, 915, for the separate request of the nozzles 903, 905, 907 with fresh air.
[0080] [00076] This measure makes it possible to adjust a fluid current curtain 917 in the openings of a dryer tunnel, which can be adjusted differently according to the passage of the working parts, for example, vehicle bodies, on the opening width B.
[0081] [00077] Fig. 10 shows a longitudinal section of another gate 1011 for a dryer tunnel in a unit for drying metal workpieces. Corresponding to Fig.4, here also the current conditions for air in the gate 1011 are indicated with arrows. The fresh air fed to the dryer tunnel through the slit-shaped nozzle 1017 produces a fluid stream curtain 1401 on the outlet side of the nozzle 1017.
[0082] [00078] Starting from an opening 1209 of the nozzle 1017, the fluid current curtain 1401 (preferably of fresh air running in the direction of the arrows 1402) extends in the form of a club 1403 more or less curved in the direction and a bottom 1041 of gate 1011. On one side of the fluid stream curtain 1401 facing the inlet opening 1213 of gate 1011, fresh air exiting nozzle 1017 generates a roll of current stream 1407 of air. In the chain roll 1407, the air flows around a center 1409 with a current direction characterized by the arrows 1406. The air in the region of the center 1409 is substantially immobile. The air circulated in the chain roll 1407 is mixed at least partially with the fresh air blown through the nozzle 1017. The chain roll 1407 extends from the bottom 1041 to the roof 1006 of the inlet gate 1011.
[0083] [00079] The gate 1011 has on the side facing the entrance opening 1213 of a guide plate, which presents a guide outline, a ridge wall 1215 in the shape of an arc. The guide plate 121 and the ridge wall 1215 limit and surround in sections a diffuser 1210, with a mixing chamber 1227 open downwards. In the diffuser 1210, in the example of the embodiment according to Fig. 10, a chain guide element 218 is positioned, in the form of a "chain handle", which, like the opening 1009 of the nozzle 1017 extends, preferably, over the entire width of the gate 1011. The guide plate 1211 separates the diffuser 1210 from a secondary chamber 1216. The secondary chamber 1216 functions as a naughty space for air, in which there are lower current speeds than in the rest of the floodgate (except for the 1409 center of rotation of the chain roller, to be effectively neglected).
[0084] [00080] At the bottom 1041 of the gate 1011, a silhouette wall 1220 is arranged in the region of the opening 1213. The silhouette wall 1220 serves, particularly as a chain barrier or as a chain guide element on the bottom side. The silhouette wall 1220 preferably consists of steel for springs or other steels resistant to temperature and / or corrosion. The silhouette wall 1220 can be moved or folded around an (horizontal) axis 1222 according to arrow 1224.
[0085] [00081] In this case, according to the invention the mixing chamber 127 receives a small part of the air circulated in the chain roller 1407. In the mixing chamber 1217 this air is guided with the chain wing 1218, due to a Venturi effect , for the gaseous fluid that comes from the opening 1209 of the nozzle 17. It is entrained by the gaseous fluid. This increases the volume flow of the fluid stream curtains 1401 in the region of the arrows 1402. The volume stream of the fluid stream curtain 1401 can thus consist of a large part of gaseous fluid, which is fed to the fluid stream. from the nozzle 1017 through the mixing chamber 1217. This has the consequence that even with a comparatively small amount of fresh air blown, a volume curtain 1401 extended to the bottom 1041 of the dryer tunnel could be generated.
[0086] [00082] The air from the mixing chamber 1217 and, in this way, is again conveyed to the chain roll 1407. This method results in the fact that only a small proportion of the gaseous fluid fed through the nozzle 1017 to the internal space 1039 of the dryer tunnel exits again through opening 1213 of gate 1011 of the dryer tunnel. The gaseous fluid leaving the nozzle 107 therefore reaches, for the most part, according to the direction of the arrows 1408, inside the dryer tunnel. Through the gaseous fluid that blows from the nozzle 1017, a barrier with light circulated in the chain roller 1407 is generated in the region of the opening 1213 of the compote 1011, which thermally separates the internal space 1038 of the dryer tunnel from the external region and, in addition , it also prevents the introduction of dust and particularly impurities. The silhouette wall 1220 at the bottom 1041 of the gate 1011 causes the chain roller 1407 to be comparatively narrow. Only when a workpiece is moved into the drying tunnel, the silhouette wall is folded according to arrow 1220, for a short period, towards the bottom 1041. It should be noted that, alternatively or additionally, a wall folding silhouette corresponding to that of silhouette 21220 can also be arranged in the upper region of the entrance opening.
[0087] [00083] The 2001 installation shown in Fig. 11 for drying vehicle bodies 2003 has a process chamber in the form of a dryer tunnel 2005; The dryer tunnel 2005 is formed with an entrance gate 2011, an intermediate gate 2012 and an exit gate 2013. In the dryer tunnel 2005 the intermediate gate 2012 separates a first drying section 2015a from another drying section 2015b as regions reception area for motor vehicle bodies, to which is attached as another reception region for motor vehicle bodies a 2016 retention zone, which is arranged before the 2013 exit gate.
[0088] [00084] The structure of the gates 2011 and 2013 corresponds to the structure of the inlet or outlet pens 11, 13 in unit 1 for drying shown in Fig. 1. In at least one penstock 2011, 2013 there is a nozzle for generating a curtain of fluid stream 2021 of fresh air, which is turned obliquely into the dryer tunnel 2005. One or more nozzles 2014 are combined with a diffuser 2018, particularly, the diffuser is arranged adjacent to the outlet of the nozzle and formed asymmetrically to a main current plane through the respective nozzle. By means of an asymmetric diffuser in the nozzles of the inlet and outlet compartments 2011,2013, on one side of the fluid curtain facing the opening 2015, 2017 of the drying tunnel 2005, a roller can be generated in each case of airflow, which, on the one hand, consists of a fluid inflated by a line 2019 through the nozzles 2014, and air circulating in the openings 2015, 2017. The intermediate compartment 2012 has a nozzle 2009, which generates a curtain of airflow fluid 2020.
[0089] [00085] An example of a modified modality of the 2001 installation can also be carried out without asymmetric diffusers in the nozzles, for example, when reduced demands are made on the tightness of the gates. For example, mechanical closing of the corresponding locks can also be provided.
[0090] [00086] Installation 2001 contains a heating device 2023, formed as a device for the thermal purification of exhaust air, with a line 2025 for the supply of hot pure gas from the dryer tunnel 2005 and heat exchanger 2027, which serves to the exhaust air heating of the dryer tunnel 2005. The exhaust air heated in the heat exchanger 2027 of the dryer tunnel 2005, can be burned in a combustion chamber 2029 of the heating device 2023, with and without additional fuel mixture. .
[0091] [00087] The heating device 2033 supplies heat to several heat transfer devices 2031, 2033, 2035, 2037 through a hot gas line 2036, which functions as a pure gas line. The heat transfer devices 2031,2033, 2035 are, in this case, preferably made extensively of the same type. The 20378 device contains air / air-heat exchanger and is coupled as the last of the heat transfer devices in the fresh air gas line, which is guided to the nozzles 2014 for the generation of the 2021 fresh air fluid curtain. The devices 2031, 2033 and 2035 contain, in each case, a heat exchanger 2039 connected with a hot gas line 2038 to the hot gas line 2036 and are configured for the circulation of circulating air in the drying sections 2015a, 2015b and in retention zone 2016. In the 2039 heat exchangers, the circulating air has a regulated temperature, which is guided by an installation of ambient air lines 2041, in communication with the reception regions 2015a, 2915b, with a venting channel of ambient air 2041a for removing circulating air from the dryer tunnel 2005 and a circulating air supply channel 2041b for the introduction of circulating air into the dryer tunnel 2005. In the 2001 installation there are 2043 devices for supplying fresh air additional to the receiving regions of the dryer tunnel 2005. The 2043 devices have 2045 lines, which communicate with a receiving region in the dryer tunnel 2005 and which contain a control device through 2047 formed as a throttle valve.
[0092] [00088] It should be noted that the 2047 passage control device can also be equipped alternatively or additionally with a blower. Through the 2045 fresh air lines, the installation of circulating air lines 2041 of the devices 2031, 2033, 2035 is guided, when the fresh air fed by the nozzles 2014 to the dryer tunnel 2005 is not enough to cover the need for fresh air from inside the dryer tunnel.
[0093] [00089] The 2001 installation contains a 2046 control device. The 2046 control device is connected with a first 2051 device for detecting a dryer tunnel status parameter 2005 in the 2001 installation, which functions as a process chamber. In device 2051 an adjustment of the throttle valves 2052, 2055 in lines 2038 is detected for the conduction of hot gas by heat exchangers 2038 and an adjustment of the throttle valves 2047 in lines 2045 for supply of fresh air by means of potentiometers or end switches. From this, an amount of fluid fed into the dryer tunnel 2005 per unit of time can be determined with the devices 2031, 2033, 2035 and 2037. With this, in turn, an amount of heat fed with the fluid can be determined, in turn, optionally. , when fluid temperatures are measured through the lines of a 2041 circulating air line system and temperature sensors associated with a 2045 line.
[0094] [00090] In addition, the control device 2046 is connected with a second device 2053 for the detection and a status parameter of the dryer tunnel 2005 in the 2001 installation, which functions as a process chamber. The device 2053 is formed as a body counting device, with which the number of motor vehicle bodies 2003 moved per unit of time in the dryer tunnel 2005 and, with that, the number of motor vehicle bodies 2003 arranged in the dryer tunnel 2005.
[0095] [00091] The 2046 control device is also connected with a 2007 temperature sensor for detecting the hot gas temperature Ta in the 2036 hot gas line. The 2007 temperature sensor is used to measure the temperature of the hot gas that flows via the hot gas line 2036 on the outlet side of the heat transfer device 2037, with which the hot gas is released from the 2001 facility as pure gas to the environment (pure gas above the temperature of the outside atmosphere).
[0096] [00092] The control circuit 2046 is connected with a control module 2056 for adjusting the number of revolutions of a fan 2057 disposed in line 2025 and another control module 2059 for adjusting the number of revolutions of a fan 2061, which serves for the suction of fresh air in the 2019 line to the 2009 nozzles generating a 2021 fluid current curtain in the dryer tunnel 2005.
[0097] [00093] The passage control devices 2047 in the devices 2043 for the supply of fresh air and the number of revolutions of the fan 2057 are then adjusted by means of the control circuit 2046 depending on the value determined by means of the device 2051 for the quantity of heat fed per unit of time to the dryer tunnel 2005 and the number determined by means of the device 2053 of bodies 2003 disposed inside the dryer tunnel 2005.
[0098] [00094] Through the 2061 fan, in such a case, such a quantity of fresh air is always supplied to the 2019 line that the floodgates 2011, 2012 and 2013 are sealed by means of the 2021 fluid current curtain generated by the 2009 nozzles.
[0099] [00095] It should be noted that the 2046 control device can also be formed as a regulation circuit. In addition, it should be noted that the supply of fresh air can also be controlled or regulated by the heat transfer devices 2031, 2033, 2035 in the dryer tunnel 2005 with a 2046 control device, to which the measured variables indicated are supplied. below, as process chamber service status parameters for the 2001 installation: Introduction of solvent in the atmosphere in the reception regions of the dryer tunnel 2005; Total carbon content in the receiving regions of the dryer tunnel 2005; Number of bodies installed in the receiving regions of the dryer tunnel 2005; Temperature of the hot gas generated with the heating device 2023 on the hot gas line 2036 behind the device 2037, in front of an exhaust gas chimney; Temperature difference of circulating air, before and after devices 2031,2033 and 2035; Difference in temperature of exhaust air from the dryer tunnel, which is fed to an exhaust gas purification unit, and of exhaust air, which leaves the exhaust gas purification unit, through an exhaust air chimney; Body weight or size of body surface ordered with varnish, to deduct an amount of solvent from it.
[0100] [00096] It is advantageous when in the 2046 control device several measurement variables are combined as status parameters (process chamber service status parameters). Thus, for example, also a pure gas temperature above the temperature of the outside atmosphere as the primary measuring variable and an adjustment of the 2052, 2055 throttle valves for adjusting the hot gas flow in the hot gas lines 2036, 2038 (position pure gas valve) as a secondary measurement variable. The primary measurement variable serves, in this case, for the determination of a current d evolve from fresh air to exhaust air and the variable d] and secondary measurement, for the verification, confirmation and / or, optionally, correction of that volume current. of fresh air-exhaust air.
[0101] [00097] After determining the volume of fresh air-exhaust air above the temperature of the outside atmosphere of pure gas, then, for example, a check of this current occurs by means of the secondary measurement variable. For example, the variable fresh air volume stream is kept constant or increased until the positions of all pure gas valve positions are again below a previously specified value, when the position of the pure gas valve positions exceeds the specified value, which depends on the total installation and which can be between 50% and 100% of degrees of opening. With such a combination of several measurement variables, it can be guaranteed, in particular, that a sufficient amount of heat is contained in the dryer tunnel 2005 of installation 2001.
[0102] [00098] Installation 2001 can, in particular, be operated as follows:
[0103] [00099] In a first operating mode, which corresponds to a utilization status A of the 2001 installation, for example, A <50%, with respect to the maximum possible capacity of parts to work in the process chamber formed as a dryer tunnel , a constant flow of fresh air is fed through the 2011, 2012 and / or 2013 gates. Additional fresh air supply through lines 2045 to the process chamber does not necessarily have to take place here.
[0104] [000100] In a second mode of operation, which corresponds to a utilization status A of the 2001 installation, for example, 51% <A <90%, with respect to the maximum possible capacity of parts to work in the process chamber formed as dryer tunnel, a current of constant volume of fresh air is fed through the gates 2011, 2012 and / or 2013. At the same time, by opening 2047 passage control devices, formed as a throttle valve, on lines 2045, it is introduced through the heat exchanger devices 2031, 2033, 2035 and / or 2037 additional fresh air into the process chamber.
[0105] [000101] In the third mode of operation that corresponds to a utilization status A of the 2001 installation, for example, 91% <A <100%, with respect to the maximum possible capacity of parts to work in the process chamber formed as a tunnel of dryer, a constant current flow of fresh air is fed through the gates 2011, 2012 and / or 2013. And the current flow of additional fresh air fed to the heat transfer devices 2013, 2033, 2035 and / or 2037, is additionally increased , in relation to the second mode of operation, by additional opening of the 2047 passage control devices.
[0106] [000102] It should be noted that the 2001 installation can also be operated in other operating modes, in which the 2047 pass-through devices on the 2045 lines have a different opening position in relation to the aforementioned operating modes. Particularly, in principle, a modification without gradation of the 2001 installation's mode of operation is also possible.
[0107] [000103] In particular, it can be observed that the supply of fresh air in the dryer tunnel 2005 in the 2001 installation can also occur at points other than those shown in Fig. 11.
[0108] [000104] In an alternative mode of installation 2001, for example, the regions and reception 2015am, 2015b, 2016 of the dryer tunnel 2005 are supplied with circulation air and / or fresh air through openings in the wall, in the ceiling and / or at the bottom of the dryer tunnel 2005. The supply of fresh air in the circulating air line system 2041, in an installation described above, can also take place in the direction of the circulating air flow, with reference, in principle, before or after a 2039 heat exchanger on a 2031,2033, 2035 heat transfer device. It should also be noted that the supply of fresh air, in this case is possible both within a 2031 heat transfer device, 2033, 2035. In addition, it is necessary to observe both food and fresh air, in this case, both inside a heat transfer device 2031, 2033, 2035 and also outside a heat transfer device 2031, 2033, 2035 , in a re-aspiration channel circulating air 2041a or circulating air return channel of a 2041 circulating air line system.
[0109] [000105] In order to set a defined volume current for fresh air, a line 204 for fresh air can also be fitted with a fan. In addition, it is possible for fresh air to be fed over the side facing the interior of the dryer tunnel 2005 from a 2021 fluid current curtain in a gate 2011, 2012, 2015 of the 2001 installation.
[0110] [000106] To explain the alternative modalities of the 2001 installation presented above, other drying facilities are subsequently described by means of Fig. 12 to Fig. 19:
[0111] [000107] Fig. 12 shows another installation 2001 'for drying vehicle bodies 2003, which, in principle, corresponds in its structure to the installation 2001 of fig. 11. Since the structural assemblies in installation 2001 of Fig. 11 and installation 2001 'of Fig. 12 are identical, they have the same reference signs in Fig. 11 and in Fig. 12. In installation 2001', the line 204 for supplying fresh air to the circulating air line system 2041 through a line extension 2045a and a line extension 2045b in the heat transfer device 2037 is connected with line 2019 for the supply of fresh air to the nozzles . Through line 2045a it is possible to feed a fresco to line 2045, sucked through the fan 2061, which was heated in the heat exchanger 2039 of the heat transfer device 2031 with heat from the pure gas guided by the hot gas line 2036.
[0112] [000108] Alternatively or additionally, fresh air can also be transported via line 2045b in heat transfer device 2037, for lines 2019, by means of fan 2061, to line 2045. In this case, fresh air transported through of the fan 2061 thereafter, it is not driven, or only partially, by the heat exchanger 2039 in the heat transfer device 2037.
[0113] [000109] Fresh air conducted on the 2019 line is introduced at installation 2001 'in the heat transfer devices 2031, 2033 and 2035, in such a way that it arrives through the heat exchanger arranged above that of the heat transfer devices 2031, 2033 and 2035 to the dryer tunnel 2005.
[0114] [000110] The fresh air introduced in the heat transfer devices 2031, 2033 and 2035 of line 204 can therefore be heated with heat from the pure gas conducted in the hot gas line 2036.
[0115] [000111] In the line section 2019a of installation 2001 'a 2062 passage measurement device is arranged. The 2062 passage measurement device controls an adjustment element in a 2048 passage control device. installation 2001 'that for different speeds of the fan 2061, 2009, 2014 the nozzles are supplied with an unchanged fresh air stream, for the generation of a fluid stream curtain 2020, 2021. In the 2045 line there is a device 2063 passage measuring device. The 2063 passage measuring device is used to determine the amount of fresh air fed to the 2045 line by means of the 2061 fan.
[0116] [000112] In the 2001 installation, the fresh air flow is fed through the passage control device 2048 on line 2045, depending on the number determined with the 2053 car bodywork device 2003 disposed inside the dryer tunnel 2005.
[0117] [000113] Passage measuring devices 2062, 2063 determine the amount of fresh air fed to line 2019, 2045 by means of fan 2061, by detecting pressure drop in a bulkhead disposed in the line section with the passage measuring device 2062, 2063. It should be noted that the measuring and passage device 2062, 2063 for detecting the fresh air flow, alternatively, may contain a magnetically inductive sensor, an ultrasound measuring unit or also a vane wheel.
[0118] [000114] Fig. 13 shows another 2011 installation "for drying, whose structure is substantially identical to the structure of installation 2001 'described above. As long as the structural assemblies in the installations shown in Fig. 12 and Fig. 13 are identical, they have the same numbers as reference signs in Fig. 12 and Fig. 13.
[0119] [000115] Unlike installation 2001 'of Fig. 12, in installation 2001 ", fresh air is supplied by line 2045 for the supply of fresh air to the heat transfer devices 2031, 2033 and 2035, on the outlet side of the heat exchangers heat 2039 the installation of circulation air line 2041. In a heat exchanger 2039 of a heat transfer device 2031,2033 and 2035, only the circulating air from the dryer tunnel fed by a 2041a feed channel is then heated
[0120] [000116] Fig. 14 and Fig. 15 show other installations 2001 '' 'and 2001 "" for drying, whose structure corresponds to the structure of the installation described by means of Fig. 12 and Fig. 13. Structural assemblies functionally the same in these installations, here again have the same reference signs as the corresponding structural assemblies of the installations of Figs. 12 and Fig. 13.In installation 2001 '' ', through line 2045 outside heat transfer devices 2031, 2033 and 2035, fresh air is introduced into the circulating air return channel 2041b of the line installation. In the 2001 installation '' '', the line 2045 for supplying fresh air in the dryer tunnel 2005 is connected with a recirculating air recirculation channel 2041a from the line installation 2041, through which the circulating air is conducted from the dryer tunnel 2005 for a heat transfer device 2031, 2033 and 2035.
[0121] [000117] It should be noted that in a modified modality of the installation 2001 '' 'of Fig. 14 or 2001' "'of Fig. 15 it may also be provided for supplying fresh air from a 2045 line, both to an air intake channel circulating 2041a as well as a circulating air return channel 2041. However, when fresh air is fed to a circulating air return channel 204b, it must be ensured that the corresponding fresh air is heated.
[0122] [000118] The installation 3001 shown in Fig. 16 for drying vehicle bodies 3003 has as a device for the detection of a state parameter of a, dryer tunnel 3005, which functions as a process chamber, several temperature sensors 3070, 3072, 3074 and 3076. As long as the structural assemblies in installation 3001 functionally correspond to the structural assemblies in installation 2001 of Fig. 11, they are characterized in Fig. 12 with numbers increased by the number 1000 in relation to Fig. 11, as signs of reference.
[0123] [000119] Temperature sensors 3070, 3072, 3074 and 3076 are connected with the control device 3046. The temperature sensor 3070 is arranged on the hot gas line 3026 between the heating device 3023 and the heat transfer device 3031 The 3072 temperature sensor is located in a terminal section of the hot gas line 3026, from which the pure gas, which flows through the hot gas line 3026, reaches the atmosphere of the environment. The temperature sensors 3070, 3072 are used to determine the heat emitted by the pure gas, which flows through the hot gas line 3026, to the dryer tunnel 3005, due to the fact that the difference in the measured temperatures is determined by means of these temperature sensors. ATh = T1-T2. With the temperature sensors 3074 and 3076, the temperature difference ΔΤυ: T3-T4 of the circulating air, which leaves the dryer tunnel 3005 in the recirculation channel 3041a and circulating air mixed with fresh air, is determined by the feeding channel and circulating air 3041b to dryer tunnel 3005.
[0124] [000120] The control device 3046 controls the number of rotations of the fan 3057 in the line 3025 and the setting of the control devices 3047 for adjusting the amount of fresh air fed to the line system 3041, depending on the temperature difference ΔΤη, ΔΤυ. Alternatively, the control device 3046 can also be used as a control circuit, which regulates the number of rotations of the fan 3057 in the line 3025 and the adjustment of the control device 3047, based on the signal from the temperature sensors 3070 , 3072, 3074 and 3076.
[0125] [000121] The installation 4001 shown in Fig. 17 for drying vehicle bodies 4003 has a device for detecting a state parameter of a dryer tunnel 4005, which functions as a process chamber, a 4078 scale, for determining the mass of the vehicle bodies 4003 fed by dryer tunnel 4005. As long as the structural assemblies in installation 4001 functionally correspond to the structural assemblies in installation 2001 of Fig. 11, they are characterized in Fig. 13 with numbers increased by the number 2000 with respect to Fig 11, as reference signals.
[0126] [000122] Here, the control device 4046 controls the number of rotations of the fan 4057 in line 4025 in line 4025 and the adjustment of the control devices 4047, to adjust the amount of fresh air fed to the system of lines 4041, depending on the mass detected by scale 4078 of vehicle bodies 4003 fed to dryer tunnel 4005.
[0127] [000123] Fig. 18 shows an installation 5001 for drying vehicle bodies 5003. As long as the structural assemblies in installation 5001 functionally correspond to the structural assemblies in installation 2001 of Fig. 11, they are characterized in Fig. 17 with numbers increased by the number 3000 with respect to Fig. 11, as reference signals. In installation 5001, the 5045 line for supplying fresh air to the heat transfer device 5037 receives fresh air, which can be heated by means of the heat exchanger 5039 with pure gas heat conducted in the hot gas line 5026. The air fresh from line 5045 is introduced in installation 5005 in the gates 5011, 501 and 5013 of the drying tunnel.
[0128] [000124] Fig. 19 shows an installation 6001 for drying vehicle bodies 6003. As long as the structural assemblies in installation 6001 functionally correspond to the structural assemblies in installation 5001 of Fig. 18, they are characterized in Fig. 19 with numbers increased by the number 1000 with respect to Fig. 18, as reference signals. In installation 6001, fresh air is introduced from line 6045 in drying sections 6015a, 6015b and in the retention zone 6016 of dryer tunnel 6005.
[0129] [000125] Other modifications and improvements of an installation according to the invention can be evidenced, among others, by combining several characteristics of the advantageous modality examples described above.
[0130] [000126] In summary, the following characteristics of the invention must be registered: a process chamber 5, 2005 has an internal space 39 with a reception region 15, 2015a, 2015b, 2016 for workpieces 3, 2003. The process chamber process 5, 2005 has an opening 12, 14, 2015, 2017 for feeding and unloading workpieces 3, 2003. process chamber 5, 2005 is formed with a device 17, 19, 25, 29, 33, 37 , 35, 2014 for the insufflation of gaseous fluid in the internal space 39, which has at least one nozzle 17, 19, 2014 or bulkhead 803 for the generation of a fluid current curtain 21, 23, 2021 between the opening 12 , 14, 2015, 2017 and the receiving region 15, 2015a, 2015b for workpieces 3, 2003. Process chamber 5, 2005 features a device 74, 2043 for the disposal of fresh air, with which on one side the fluid stream curtain 21, 2, 2021 away from the opening 12, 14, 2015, 2017, fresh air can be introduced in the receiving region 15, 2015a, 2015b. LIST OF REFERENCE SIGNS 1 installation 3 vehicle body 5 dryer tunnel, process chamber 6 ceiling 7 skate 9 conveyor device 10 drive 11 entrance gate 11 entrance opening 13 exit gate 14 outlet opening 15 drying section, drying zone 16, 18 diffuser 17, 19 nozzle 17,19,25,29,33,37,35 device 21.23 fluid chain curtain 25, 27 fresh air 29, 31 chamber 33, 35 aperture 37 horizontal 39 indoor space 41 background 42 ambient air 43.44 heating device 45.47 control device 49.51 sensor 61 fan 74.74 'device 63 heating device 69.71 temperature sensor 70 device 72 circulating air line system 73 solvent sensor 74 device 75 channel advance 76.76 'line 77 return channel 78.78 'opening 80.80 'passage control device 201 pipe 202 main current plane 203 chamber 204 plan 205 air filter 206 housing plate 207 guide plate 208 axis of rotation 209 aperture 20 fluid corrector 211 guide contour, contour, guide plate 213 inlet opening 25 front wall, front plate 26 secondary chamber 27 mixing chamber 219 fluid 401 fluid current curtain 402 arrow 403 apple] 406 arrow 407 chain roller 408 arrow 409 center 409 center 501 floodgate, entrance floodgate 503 nozzle 505 nozzle opening 507 nozzle opening 509 ceiling 507, 509 nozzle openings 511 cotnrole valve 601 holds 603 nozzle 605 guide plate 607 opening, nozzle 608 ceiling 609 front wall 611 the interior 612 peak element 613 mixing chamber 615 rotary joint 616 horizontal 617 double arrow 619 aperture 701 floodgate 703 nozzle 704 current channel 709 front wall 711 the interior 713 mixing chamber 721 region 801 floodgate 803 bulkhead 804 aperture 805 guide plate 809 front wall 812 peak element 816 notch 821 region 900 dryer tunnel 901 floodgate, exit floodgate 903,905,907 nozzle 909 fresh air current 910 ceiling 911,913, 915 channel 917 fluid current curtain 1006 ceiling 1009 aperture 1011 gate, inlet gate 1017 mouthpiece 1039 internal space 1041 background 1209 aperture 1220 diffuser 1211 guide plate 1213 opening, inlet opening 1215 ridge wall 1216 secondary chamber 1217 mixing chamber 1218 chain guide element, chain handle 1220 silhouette wall, arrow 1222 axis 1224 arrow 1401 fluid current curtain 1402 arrow 1403 apple 1406 arrow 1407 chain roller 1408 arrow 1409 center, center of rotation 2001,2001 ', 2001'',2001''', 2001 '''' installation 2003 vehicle body, work piece 2005 dryer tunnel, process chamber 2007 temperature sensor 2009 mouthpiece 2011,2012,201,2015 comprises 2014 mouthpiece 2015a, 2015b drying section, reception region 2015,2017 opening 2016 retention zone 2018 diffuser 2019 line 2019 line section 2020 fluid current curtain

权利要求:
Claims (14)
[0001]
Installation (1, 2001) with a process chamber (5, 2005), which comprises an internal space (39) with a receiving region (15, 2015a, 2015b, 2016) for workpieces (3, 2003) and which it has an opening (12, 14, 2015, 2017) for feeding or unloading workpieces (3, 2003), and with a device (17,19, 25, 29, 33, 37, 35, 2014) for the insufflation of gaseous fluid in the internal space (39), which has at least one mouthpiece (17, 19, 2014) or bulkhead (803 ) for the generation and a fluid current curtain (21, 23, 2021) between the opening (12, 14, 2015, 2017) and the receiving region (15, 2015a, 2015b) for workpieces (3, 2003 ), with a device (70, 2031, 2033, 2035) for the circulation of gaseous fluid in the receiving region (15, 2015a, 2015b) by a circulating air line system (72, 2041), which communicates with the region of receiving (15, 2015a, 2015b), and which has a feed channel (75) that opens in the receiving region (15) and a return channel (77) that is connected with the receiving region and in which the fluid in agitated gaseous form is guided through a device (2031, 2033) for temperature control, particularly for heating the fluid in gaseous form from the receiving region (15, 2015a, 2015b), characterized by the fact that, the device (70, 2031, 2033, 2035) for stirring the gaseous fluid in the receiving region (15, 2015a, 2015b) is connected to the device (74, 2043) for the supply of fresh air, with which the fresh air device can be introduced into the receiving region (15, 2015a, 2015b) on one side of the fluid stream curtain (21, 23, 2021), the side of which is directed away from the opening (12, 14, 2015, 2017), and that has at least one line (78, 2045) that communicates with the receiving region (15, 2015a, 2015b) and that has an opening to suck fresh air and that has a control device passing (80, 2047), and where a mixing chamber (217) is provided disposed next to the nozzle (17, 19), this mixing chamber (217) being adapted to add air from the region of an opening (213) or the internal space (39) of the process chamber (5) to the gaseous fluid flowing out of the nozzle (17, 19).
[0002]
Installation according to 1, characterized by the fact that the line (76) with the opening (78) for aspiration of fresh air in a return air circulating channel (77) exits in the system of circulating air lines (72) .
[0003]
Installation according to claim 1 or 2, characterized by the fact that the passage control device (80, 2047) is connected with a control or regulation circuit (45, 2049), which receives the signal from a device (49 , 69, 73, 2051) for the detection of a process chamber status parameter (5, 2005) that controls or regulates the amount of fresh air introduced through the device for supplying fresh air through the control device pass-through (80, 2047), depending on at least one detected state parameter.
[0004]
Installation according to claim 3, characterized by the fact that the device (2051) is configured for the detection of a process chamber status parameter (5, 2005) of the group indicated below: i. carbon content and / or solvent content of the atmosphere in the receiving region (2015a, 2015b, 2016); ii. number and / or weight and / or type and / or size of the surface of workpieces (2003) arranged in the receiving region; iii. number and / or weight and / or type and / or surface size of workpieces (2003) fed per unit of time to the receiving region; iv. exhaust air temperature of a combustion chamber (2029) of a burner in a device for regulating circulating air temperature; v. temperature difference of gaseous fluid, which was removed from the receiving region (2015a) and fed back to the receiving region (2015a); saw. temperature difference of gaseous fluid in the receiving region (2015a), which is fed to a combustion chamber (2029) from a burner in a device for regulating the temperature of circulating air, and of exhaust air from the combustion chamber ( 2029) of the burner; vii. amount of heat per unit time, which is fed to the process chamber (2005).
[0005]
Installation according to any one of claims 1 to 4, characterized by the fact that the internal space (39) is configured in the form of a tunnel and has a bottom (41), as well as a ceiling (6), the least of which is a nozzle (17, 19) or bulkhead (803) has a slit shape, which feeds the gaseous fluid over the ceiling (6) with a flow direction (402) inclined in relation to the bottom (41) in the internal space (39 ), and the gaseous fluid fed into the internal space (39), through the roof (6), generates on the side facing the opening (12, 14) the fluid current curtain (21, 23) a chain roller (407 ) of air, which is at least partially mixed with inflated fluid.
[0006]
Installation according to claim 5, characterized by the fact that the gaseous fluid fed into the internal space (39) is fresh air and / or where gaseous fluid inflated through at least one nozzle (17, 19) or bulkhead (803) in the internal space (39) is guided by a diffuser (16, 2116) to the internal space (39), the gaseous fluid being introduced into the internal space (39) through the diffuser (16, 2116) is guided inwards of the internal space (39) in a guide contour (606).
[0007]
Installation according to claim 6, characterized by the fact that the guide contour (606) is formed in a guide plate (605) that can be moved.
[0008]
Installation according to claim 6 or 7, characterized by the fact that on the side of the guide contour (211, 1211) facing the opening (213, 1213) there is a wall (215, 1215), which defines with the guide contour (21, 1211) a diffuser (6, 18) with a metallic mixing component (27, 1217), in which the fluid from the chain roller (407, 1407) is mixed with air from the opening region (213 , 1213).
[0009]
Installation according to claim 8, characterized in that on a side away from the mixing chamber (217) of the guide contour (211) a secondary chamber (216) is formed, which functions as a dead space for gaseous fluid, and /or where a guide plate (1218) is arranged in the mixing chamber (1218), which is inflated with gaseous fluid from the chain roller (1407) and which returns the fluid from the chain roller (1407) to the chain curtain fluid (1401).
[0010]
Installation according to any one of claims 1 to 9, characterized in that the passage control device comprises a throttle valve (80, 2047) and / or an adjustable blower, and / or where the receiving region is divided into a first receiving region (2015a) and another receiving region (2015b), and the device (2014) for insufflation of gaseous fluid in the internal space generates the fluid current curtain (2021 ) between the first receiving region (2015a) and the other receiving region (2015b), and / or where the at least one nozzle (503) has a device (511) for adjusting the amount of current for fluid passing through the nozzle (503) and / or that several nozzles (903, 905, 907) are provided with a device for adjusting the amount of fluid current flowing through the nozzle to adjust the fluid current curtain between the inlet opening and the receiving region for workpieces (912), differently in different sections, and / or where for the control of a fluid stream formed in the internal space (1039) a displaceable current barrier (1220) is provided, and / or where the device for the insufflation of gaseous fluid has a heating device (43, 44) for heating the gaseous fluid, and / or where the installation is formed as a drying unit and / or a hardening unit and / or a varnishing unit.
[0011]
Method for operating an installation, as defined in any of claims 1 to 10, characterized by the fact that for the generation of the fluid stream curtain (21, 23, 2021), pressure gas requested with pressure is guided by the nozzle ( 17, 19) or bulkhead (803), and in which in the mixing chamber (217) arranged adjacent to the nozzle (17, 19), air from the region of an opening (213) or from the internal space (39) of the chamber process liquid (5) is mixed with the gaseous fluid flowing from the nozzle (17, 19).
[0012]
Method according to claim 11, characterized in that the gaseous fluid guided by the nozzle (17, 19) is guided along a guide contour (211), which limits the mixing chamber (217), and which separates , in particular, the mixing chamber (217) of a secondary chamber (216), disposed adjacent to it, which functions as a dead space for gaseous fluid.
[0013]
Method for operating an installation according to claim 11 or 12, characterized in that in it a stream of gaseous fluid guided by the nozzle (17, 19) or bulkhead (803), is strangled or interrupted between the opening (12 , 14) and the receiving region (15) for the workpieces (3), for the generation of a fluid stream curtain (21, 23) and / or in which the direction of the fluid stream curtain (21 , 23) is modified when a workpiece (3) is moved through the opening (12, 14).
[0014]
Method according to any one of claims 11 to 13, characterized in that the fluid current curtain (21, 23, 2021) is generated with an unchanged amount of fresh air over the average time over a period , which is guided by the nozzle (17, 19) or the screen (803), and in which with the device (74, 2043) for the supply of fresh air to the internal space (39), in the interval an amount of air is fed variable fresh, which depending on a service status parameter of the process chamber of the group indicated below is controlled or regulated: i. carbon content and / or solvent content of the atmosphere in the receiving region (2015a, 2015b, 2016); ii. number and / or weight and / or type and / or size of the surface of workpieces (2003) arranged in the receiving region; iii. number and / or weight and / or type and / or surface size of workpieces (2003) fed per unit of time to the receiving region; iv. exhaust air temperature of a combustion chamber (2029) of a burner in a device for regulating circulating air temperature; v. temperature difference of gaseous fluid, which was removed from the receiving region (2015a) and fed back to the receiving region; saw. temperature difference of gaseous fluid in the receiving region (2015a), which is fed to a combustion chamber (2029) from a burner in a device for regulating the temperature of circulating air, and of exhaust air from the combustion chamber ( 2029) of the burner; vii. amount of heat per unit time, which is fed to the process chamber (2005).

类似技术:

---

公开号 | 公开日 | 专利标题

---

BR112014024884B1|2021-04-06|INSTALLATION WITH A PROCESS CHAMBER AND METHOD FOR OPERATING AN INSTALLATION

---

BR112013010030B1|2020-08-04|PROCESS CHAMBER, DRYING INSTALLATION AND PROCESS FOR OPERATING A PROCESS CHAMBER

---

US9970706B2|2018-05-15|System having a process chamber for workpieces

---

ES2705677T3|2019-03-26|Installation of drying and / or hardening

---

US10605529B2|2020-03-31|System having a process chamber for workpieces

---

WO2016161834A1|2016-10-13|Ventilating cabinet

---

EP1688690B1|2014-12-17|Flat surface dryer

---

US9841234B2|2017-12-12|Drying device

---

KR20120097393A|2012-09-03|Method and device for drying sheets of drywall

---

US10006712B2|2018-06-26|Recirculating system for use with green wood veneer dryers and method for drying green wood veneer

---

EP2742302B1|2017-05-03|Plate dryer and method of drying solvent based coating

---

JP5788241B2|2015-09-30|Heat treatment equipment

---

JP2004261759A|2004-09-24|Drying method of surface protective agent of car and its drying apparatus

---

JP4821586B2|2011-11-24|Coating object drying oven

---

CN206032387U|2017-03-22|Ceramic tile heat sink

---

KR100276816B1|2001-01-15|Circulating Grain Dryer with Improved Drying Hot Air Supply and Discharge Paths

---

SE536331C2|2013-08-27|Method and apparatus for drying wood

---

JP2008045865A|2008-02-28|Grain dryer

---

SE536195C2|2013-06-18|Supply device for combustion chamber and method therefore

---

CN112384736A|2021-02-19|Charging type incineration equipment and incineration method of incinerated object

---

JP2007155297A|2007-06-21|Drying method of coating sheet

---

JPH07270072A|1995-10-20|Dryer

---

JP2009000628A|2009-01-08|Coating drying furnace

---

PL234209B1|2020-01-31|Method of a course of combustion process in the boiler-burner arrangement of the central heating boilers with rotary combustion chamber and the boiler-burner arrangement with the pellet burner for powering the central heating boilers, having the rotary combustion chamber

---

KR20140081526A|2014-07-01|Air blower for drying lump

同族专利:

---

公开号 | 公开日

---

EP3336467A1|2018-06-20|

---

ES2705601T3|2019-03-26|

---

EP3336467B1|2018-10-24|

---

DE102012207312A1|2013-11-07|

---

CN104583699A|2015-04-29|

---

EP2844937B1|2018-03-21|

---

US20150121720A1|2015-05-07|

---

CN104583699B|2017-03-15|

---

WO2013164285A1|2013-11-07|

---

PL3336467T3|2019-04-30|

---

IN2014DN07532A|2015-04-24|

---

TR201820376T4|2019-02-21|

---

PT3336467T|2019-01-28|

---

EP2844937A1|2015-03-11|

---

US9423179B2|2016-08-23|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

US1606442A|1923-08-11|1926-11-09|Aaron S Nichols|Paint and varnish drier|

---

DE1095497B|1954-05-12|1960-12-22|Schilde Maschb Ag|Air door for dryers and industrial ovens|

---

FR2257209A5|1973-11-15|1975-08-01|Air Ind|

---

GB2123936B|1982-06-09|1985-10-30|Flakt Limited|Paint curing apparatus|

---

DE4324488C2|1993-07-21|1998-02-05|Flaekt Ab|Process and hot air dryer for drying coated surfaces|

---

US5568692A|1994-11-09|1996-10-29|Durr Industries, Inc.|Paint drying oven with radiant energy floor|

---

US7658017B1|2004-01-12|2010-02-09|Thomas Brian Laviolette|Vacuum drying method|

---

JP4821586B2|2006-11-29|2011-11-24|マツダ株式会社|Coating object drying oven|

---

US8196310B2|2007-02-09|2012-06-12|Usnr/Kockums Cancar Company|Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers|

---

DE102007040153A1|2007-08-24|2009-02-26|Dürr Systems GmbH|Method and apparatus for separating overspray of a liquid coating material|

---

CN102256711B|2008-12-19|2014-08-27|杜尔系统有限公司|Painting system and method for operating a painting system|

---

DE102009021004A1|2009-04-24|2010-10-28|Dürr Systems GmbH|Drying and / or curing plant|

---

EP2295909B1|2009-09-10|2016-02-24|Crone, Fokko|Method for efficient use of hot air streams in a drying system, in particular for a vehicle body painting system|

---

JP5568377B2|2010-05-26|2014-08-06|本田技研工業株式会社|Drying method|

---

DE102010024840B4|2010-06-23|2016-09-22|Eisenmann Se|dryer|

---

DE102010043087A1|2010-10-28|2012-05-03|Dürr Systems GmbH|Process chamber with device for injecting gaseous fluid|

---

US8756827B1|2011-05-12|2014-06-24|The Paint Booth Guys, Inc.|Spray booth system and methods|

---

SE536335C2|2011-12-20|2013-08-27|Pivab Ab|Device for drying paint|

---

DE102012207312A1|2012-05-02|2013-11-07|Dürr Systems GmbH|Process chamber with device for injecting gaseous fluid|

---

US9096079B2|2012-10-11|2015-08-04|Eastman Kodak Company|Dryer impinging heating liquid onto moistened medium|DE102011119436B4|2011-11-25|2020-08-06|Eisenmann Se|Device for tempering objects|

---

US9970706B2|2012-05-02|2018-05-15|Duerr Systems Ag|System having a process chamber for workpieces|

---

US10605529B2|2012-05-02|2020-03-31|Duerr Systems Ag|System having a process chamber for workpieces|

---

DE102012207312A1|2012-05-02|2013-11-07|Dürr Systems GmbH|Process chamber with device for injecting gaseous fluid|

---

DE102014008472A1|2014-06-05|2015-12-17|Wenker Gmbh & Co. Kg|A method for post-combustion of the exhaust air of a drying plant, in particular a motor vehicle drying plant, and apparatus for post-combustion of the exhaust air of a drying plant|

---

EP2952842A1|2014-06-06|2015-12-09|Clausthaler Verfahrens- und EnergietechnikGmbH|Drying system and method for controlling the drying system|

---

DE102014015705A1|2014-10-22|2016-04-28|Wenker Gmbh & Co. Kg|Dryers for technical articles, in particular for painted motor vehicle bodies|

---

EP3222950B1|2014-11-20|2019-01-02|Nissan Motor Co., Ltd|Coat drying device and coat drying method|

---

DE102015102955B4|2015-03-02|2017-03-23|Sturm Maschinen- & Anlagenbau Gmbh|Method and plant for surface treatment of a workpiece|

---

DE102015205338A1|2015-03-24|2016-09-29|Cefla Deutschland Gmbh|drying device|

---

DE102015012466A1|2015-09-29|2017-03-30|Eisenmann Se|Device for controlling the temperature of objects, in particular for drying coated vehicle bodies|

---

DE102015219898A1|2015-10-14|2017-04-20|Dürr Systems GmbH|Workpiece processing system and method for operating a workpiece processing system|

---

DE102015224916A1|2015-12-10|2017-06-14|Dürr Systems Ag|Treatment plant and method for treating workpieces|

---

CN108369062B|2015-12-21|2020-08-25|广东环葆嘉节能科技有限公司|Balanced type drying system|

---

DE102016001893A1|2016-02-17|2017-08-17|Eisenmann Se|Burner unit and device for tempering objects|

---

CN105575859B|2016-03-04|2018-07-17|京东方科技集团股份有限公司|A kind of air curtain system|

---

ITUA20161800A1|2016-03-18|2017-09-18|Cefla S C|VERTICAL OVEN FOR ARTICLES WITH TWO PREVALENT DIMENSIONS|

---

IT201600074962A1|2016-07-18|2018-01-18|Geico Spa|Drying plant for painted objects|

---

CN106052324A|2016-07-25|2016-10-26|无锡市曙光高强度紧固件有限公司|Fastener drying box|

---

CN106643028A|2016-12-15|2017-05-10|武汉华星光电技术有限公司|Baking device|

---

DE102016125060A1|2016-12-21|2018-06-21|Eisenmann Se|Device for tempering objects|

---

CN106784166A|2017-02-07|2017-05-31|荆门市明豪装饰工程有限公司|A kind of solar energy safety glass cleaning device|

---

JP6681853B2|2017-06-16|2020-04-15|株式会社大気社|Paint drying oven|

---

CA3027640A1|2017-12-14|2019-06-14|Rodney Skiffington|A forced air apparatus|

---

DE102018210435A1|2018-06-26|2020-01-02|Dürr Systems Ag|Conveying system, treatment plant and funding process|

---

DE102018210433A1|2018-06-26|2020-01-02|Dürr Systems Ag|Separation device and treatment plant|

---

DE102018129583B4|2018-11-23|2020-10-15|Christof Schulte-Göbel|Flow device|

---

DE102019213430A1|2019-09-04|2021-03-04|Dürr Systems Ag|Separating device, treatment system, method for separating two areas of space and method for treating workpieces|

法律状态:
2018-07-10| B25D| Requested change of name of applicant approved|Owner name: DA RR SYSTEMS AG (DE) |

---

2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

---

2020-03-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

---

2021-02-23| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

---

2021-04-06| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/04/2013, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

---

申请号 | 申请日 | 专利标题

---

DE201210207312|DE102012207312A1|2012-05-02|2012-05-02|Process chamber with device for injecting gaseous fluid|

---

DE102012207312.4|2012-05-02|

---

PCT/EP2013/058817|WO2013164285A1|2012-05-02|2013-04-26|System having a process chamber for workpieces|

---