DE102015017279B3 - Treatment plant and method for treating workpieces - Google Patents

Abstract

Treatment plant (100) for treating workpieces (104) formed as vehicle bodies (106), wherein the treatment plant (100) comprises a treatment space (110) and a conveying device (114) by means of which the workpieces (104) are conveyed in a conveying direction (112). through the treatment space (110), characterized in that the treatment plant (100) comprises a plurality of inlet openings (126) for supplying gas to the treatment space (110) and a plurality of outlet openings (132) for removing gas from the treatment space (110) which are arranged on opposite sides of the workpiece (104), wherein a flow through the treatment space (110) is provided such that at least 70% of the gas flowing through the inlet openings (126) through the outlet openings (132) from the treatment space (110 ) can be discharged, wherein the workpieces (104) by means of the conveying device (114) can be received and at least scrape in such a way that they can be conveyed through the treatment space (110) such that a longitudinal direction (140) of the workpieces (104) is aligned transversely to the conveying direction (112), wherein the inlet openings (126) and the outlet openings (132) are arranged such that the treatment space (110) is flowed through substantially perpendicular to the conveying direction (112) with gas.

Description

The present invention relates to a treatment plant and a process for treating workpieces. In particular, a treatment plant is used to dry coated vehicle bodies. The method for treating workpieces is therefore in particular a method for drying coated vehicle bodies.

Treatment plants and treatment processes are known in particular from the following publications:
EP 1 998 129 B1 . US 2006/0068094 A1 . EP 1 302 737 A2 . WO 02/073109 A1 . DE 10 2004 025 528 B4 . DE 10 2007 007 478 B3 . DE 10 2008 005 582 B3 . DE 102 32 529 A1 . DE 199 41 760 A1 . DE 10 2006 030 334 A1 . DE 10 2009 021 004 A1 . DE 10 2010 002 179 A1 . DE 10 2013 004 136 A1 . DE 94 22 327 U1 . DE 201 04 205 U1 ,

The DE 10 2006 030 334 A1 discloses a dryer for drying vehicle bodies which are conveyed through a dryer room in a vehicle longitudinal direction. By nozzles, which are arranged in vertical partitions of the dryer room, the vehicle bodies are bi-directionally and symmetrically applied with a heating gas.

The US 2006/0068094 A1 discloses a paint shop in which to be painted vehicle bodies are conveyed through a treatment room on a rotating cross member. Here, a conventional gas supply via a plenum, a vertical flow through the treatment chamber and a central suction via a filter system are provided.

The DE 201 04 204 U1 discloses on the one hand a heating zone of a dryer system for drying vehicle bodies and on the other hand a holding zone of the dryer system. In the heating zone, a double-sided gas supply to the vehicle bodies conveyed in the vehicle longitudinal direction is provided. The suction takes place at one end of the conveying path along the conveying direction. In the holding zone, a unilateral gas supply and an exhaust are provided via a single suction opening. This results in a gas flow, which runs mostly along or at least obliquely to the conveying direction.

The DE 199 41 760 A1 discloses a cooling zone for cooling vehicle bodies, in which a bilateral gas supply and a bilateral gas discharge are provided. In combination with the promotion of the vehicle bodies in the vehicle longitudinal direction, this results in a bilateral inflow into the vehicle interior and a suction on both sides in the sense of a symmetrical as possible gas.

The present invention has for its object to provide a treatment plant, which is simple in construction and allows optimized workpiece treatment.

This object is achieved by a treatment plant according to claim 1.

According to the invention, it is provided that the workpieces can be received by the conveying device in such a way that they can be received and at least partially conveyed through the treatment space such that a longitudinal direction of the workpieces is aligned transversely, in particular substantially perpendicular, to the conveying direction.

The treatment plant comprises a plurality of inlet openings for supplying gas to the treatment space and a plurality of outlet openings for discharging gas from the treatment space, which are arranged on opposite sides of the workpiece.

At least one inlet opening and / or at least one outlet opening may, for example, be arranged and / or formed in a wall which delimits the treatment space.

Alternatively or additionally, it can be provided that at least one inlet opening and / or at least one outlet opening is formed by an end region of a flow guide opening into the treatment space. Such a flow guide may comprise, for example, one or more flow guide elements or flow guide elements and / or a guide channel. It is preferably decisive that an area of the flow guide forming the at least one inlet opening and / or the at least one outlet opening serves to discharge at least a majority of the supplied gas stream into the treatment space and / or to lead out at least a majority of the gas stream to be taken out of the treatment room, in particular regardless of whether the gas stream before its delivery to the treatment room and / or after its discharge from the treatment room is still partially guided within an inner contour of the housing surrounding the treatment chamber and / or within the treatment room or not.

Preferably, the at least one inlet opening on the one hand and the at least one outlet opening on the other hand are on each other arranged on different sides of a vertical workpiece transverse center plane.

A vertical workpiece transverse center plane is, in particular, a plane which is aligned perpendicular to a workpiece longitudinal direction and extends through a center point and / or center of gravity of the workpiece centered with respect to a workpiece longitudinal direction.

It may be favorable if all inlet openings on the one hand and all outlet openings on the other hand are arranged on mutually different sides of a vertical workpiece transverse center plane. In one embodiment of the invention, it can be provided that at least one inlet opening and at least one outlet opening are arranged at a distance from one another which is at least approximately 60%, in particular at least approximately 80%, for example at least approximately 100%, of an overall length of the length taken along a workpiece longitudinal direction Workpiece is.

The at least one inlet opening and the at least one outlet opening are preferably associated with a holding position of a workpiece in which the workpiece at least temporarily dwells. Due to the offset of the at least one inlet opening and the at least one outlet opening with respect to the conveying direction, a gas flow with a vectorial component along the conveying direction can preferably be achieved. In particular, it can be provided that a workpiece is flowed through in the holding position along the conveying direction with a gas stream.

It can be provided that the treatment facility comprises at least one inlet opening for supplying gas to the treatment space and at least one outlet opening for removing gas from the treatment space, wherein the at least one inlet opening on the one hand and the at least one outlet opening on the other hand with respect to a vertical longitudinal center plane of the treatment space are arranged on different sides of the treatment room.

The vertical longitudinal center plane is preferably a plane arranged centrally with respect to a maximum or average horizontal transverse extent of the treatment space.

The vertical longitudinal center plane extends in particular parallel to the conveying direction.

The transverse extension is in particular an extension in a direction perpendicular to the conveying direction.

It may be favorable if the treatment system comprises one or more inlet openings for supplying gas to the treatment space and / or one or more outlet openings for removing gas from the treatment space.

Preferably, the one or more, in particular all, inlet openings are arranged in one of two by a vertical, horizontal or obliquely extending thereto longitudinal central plane divided half spaces of the treatment chamber.

Alternatively or additionally, it can be provided that the one or more, in particular all, outlet openings are arranged in one of the two half-spaces of the treatment space divided by the vertical, horizontal or obliquely extending longitudinal center plane.

In particular, it can be provided that the one or more, in particular all, inlet openings in a first half-space and the one or more, in particular all, outlet openings are arranged in a further, in particular second, of the two half-spaces.

By arranging the inlet openings and / or outlet openings in preferably only one of two half-spaces of the treatment space, in particular a one-sided gas supply and / or a one-sided gas discharge can be realized.

The treatment plant preferably comprises a plurality of inlet openings for supplying gas to the treatment space and a plurality of outlet openings for removing gas from the treatment space, wherein the inlet openings on the one hand and the outlet openings on the other hand are preferably at least approximately opposite each other with respect to a diagonal plane, the diagonal plane being parallel to the conveying direction and extends substantially diagonally through the treatment space.

Preferably, the diagonal plane with the direction of gravity includes an angle of at least about 40 °, for example about 45 °, and / or at most about 50 °.

In one embodiment of the invention can be provided that the treatment plant comprises a plurality of inlet openings for supplying gas to the treatment room and a plurality of outlet openings for discharging gas from the treatment room, wherein the inlet openings and the outlet openings are arranged so that the treatment space at least approximately diagonally Gas can be flowed through.

The treatment plant preferably comprises at least one circulating air module.

In particular, several circulating air modules of the treatment plant can be provided.

• eine Gaszuführung zum Zuführen von Gas zu dem Behandlungsraum; und/oder
• eine Gasabführung zum Abführen von Gas aus dem Behandlungsraum; und/oder
• eine Gebläsevorrichtung zum Antreiben eines Umluftgasstroms; und/oder eine Abscheidevorrichtung zum Abscheiden von Verunreinigungen aus dem Umluftgasstrom; und/oder
• eine Verteilervorrichtung zum Verteilen des dem Behandlungsraum zuzuführenden Umluftgasstroms auf mehrere Einlassöffnungen der Gaszuführung; und/oder
• eine Sammelvorrichtung, mittels welcher der durch mehrere Auslassöffnungen der Gasabführung aus dem Behandlungsraum abgeführte Umluftgasstrom zusammenführbar ist.

A circulating air module, in particular each circulating air module, preferably comprises the following:

• a gas supply for supplying gas to the treatment room; and or
• a gas discharge for removing gas from the treatment room; and or
• a blower device for driving a recirculating gas flow; and / or a separation device for separating impurities from the Umluftgasstrom; and or
• a distributor device for distributing the recirculating-gas flow to be supplied to the treatment space to a plurality of inlet ports of the gas supply; and or
• a collecting device, by means of which the circulated through a plurality of outlet openings of the gas discharge from the treatment chamber Umluftgasstrom is merge.

Preferably, the treatment plant comprises a plurality of recirculating air modules successive along the conveying direction.

Each circulating air module preferably forms a, in particular complete, section of the treatment plant.

In particular, a circulating air module comprises a circulating air unit, which can be docked to a housing surrounding the treatment space.

A circulating air module comprises in particular a portion of the housing surrounding the treatment space and a circulating air unit.

In this specification and the appended claims, the term "circulating air" is not necessarily set to the gas "air". Rather, the term "circulating air" preferably refers to a circulated gas, which is in particular repeatedly processed and / or reused.

Preferably, no connection channels are provided between the circulating air unit and the housing surrounding the treatment space. Rather, the circulating air unit and the housing, which surrounds the treatment space, preferably have a common wall.

A gas flow is preferably feasible through an opening or recess in the common wall of the circulating air unit in the treatment room.

The gas supply or gas discharge may be part of the Umluftaggregats or the housing, which surrounds the treatment chamber. Depending on the opening in the common wall for supplying gas to the gas supply or for supplying gas to the treatment room is suitable.

The treatment plant preferably comprises at least one rinsing module.

In particular, several rinsing modules of the treatment system can be provided.

• eine Gaszuführung zum Zuführen von Gas zu dem Behandlungsraum; und/oder
• eine Gasabführung zum Abführen von Gas aus dem Behandlungsraum; und/oder
• eine Gebläsevorrichtung zum Antreiben eines Spülgasstroms; und/oder eine Abscheidevorrichtung zum Abscheiden von Verunreinigungen aus dem Spülgasstrom; und/oder
• eine Verteilervorrichtung zum Verteilen des dem Behandlungsraum zuzuführenden Spülgasstroms auf mehrere Einlassöffnungen der Gaszuführung; und/oder
• eine Sammelvorrichtung, mittels welcher der durch mehrere Auslassöffnungen der Gasabführung aus dem Behandlungsraum abgeführte Spülgasstrom zusammenführbar ist.

A rinsing module, in particular each rinsing module, preferably comprises the following:

• a gas supply for supplying gas to the treatment room; and or
• a gas discharge for removing gas from the treatment room; and or
• a blower device for driving a purge gas flow; and / or a separation device for separating impurities from the purge gas stream; and or
• a distribution device for distributing the purge gas flow to be supplied to the treatment space to a plurality of inlet ports of the gas supply; and or
• a collecting device, by means of which the purge gas stream discharged through a plurality of outlet openings of the gas discharge from the treatment space can be brought together.

Preferably, the treatment plant comprises a plurality of rinsing modules successive along the conveying direction.

Each rinsing module preferably forms a, in particular complete, section of the treatment plant.

In particular, a flushing module comprises a flushing gas unit, which can be docked to a housing surrounding the treatment space.

A flushing module comprises in particular a section of the housing surrounding the treatment space and a purge gas unit.

Preferably, no connection channels are provided between the purge gas unit and the housing surrounding the treatment space. Rather, the purge gas unit and the housing, which surrounds the treatment space, preferably a common wall.

A gas stream is preferably feasible through an opening or recess in the common wall of the purge gas in the treatment room.

The gas supply or gas discharge may be part of the purge gas unit or the housing which surrounds the treatment chamber. Depending on the opening in the common wall for supplying gas to the gas supply or for supplying gas to the treatment room is suitable.

The distributor device is preferably separated from the treatment space by means of a dividing wall.

One or more inlet openings, optionally all inlet openings, are preferably formed in the dividing wall.

The partition wall is preferably arranged within the housing which surrounds the treatment space. The distributor device is then preferably part of the housing which surrounds the treatment space.

However, it can also be provided that the partition in particular a common wall between the circulating air unit or purge gas unit on the one hand and the housing which surrounds the treatment chamber, on the other hand.

As an alternative or in addition to at least one inlet opening arranged in a dividing wall, it can be provided that at least one inlet opening is arranged in a bottom wall of the housing surrounding the treatment space and / or in a ceiling wall of the housing surrounding the treatment space.

In particular, several of the inlet openings described above can be provided.

It may be favorable if the partition wall is formed at least in sections following a workpiece contour.

It may be advantageous if the treatment plant is a treatment plant for the treatment of vehicle bodies and if the partition is a substantially vertical section running at least approximately parallel to a vehicle front or a vehicle rear of a vehicle body, at least approximately parallel to a front hood or rear hood of the vehicle body Essentially horizontal portion and / or at least approximately parallel to A-pillars or C-pillars of the vehicle body extending oblique portion comprises.

It may be favorable if the partition wall has a plurality of inlet openings in the at least approximately parallel to a vehicle front or a vehicle body rear vehicle body extending substantially vertical portion and / or a plurality of inlet openings in the at least approximately parallel to A-pillars or C-pillars of the vehicle body extending oblique Section includes.

It may be favorable if the treatment system comprises a plurality of rinsing modules and / or a plurality of circulating air modules, wherein each circulating air module preferably forms a heating zone and / or holding zone and / or cooling zone of the treatment chamber.

Preferably, the treatment plant has a plurality of successive in the conveying direction of modules, in particular recirculation modules and / or Spülmodule on.

It can be advantageous if the collecting device comprises a collecting channel, which is preferably arranged outside the treatment space and into which several outlet openings open.

Alternatively or additionally, it can be provided that the collecting device comprises a return channel, by means of which the Umluftgasstrom or purge gas flow discharged through a plurality of outlet openings from the treatment chamber to the fan device, the separation device and / or the distributor device is feasible.

The treatment plant preferably comprises a gas supply, by means of which a gas flow can be directed into an interior space of a workpiece.

A stream commonly referred to as a "gas stream" may in particular be a recycle gas stream, a purge gas stream, an inert gas stream, etc.

In one embodiment of the invention, it can be provided that the treatment plant comprises a gas supply, which comprises at least one inlet opening, by means of which a gas flow in a direction extending substantially perpendicular to an inlet opening of a workpiece in an interior space of the workpiece is directable.

The inlet opening is in particular an opening in which a windshield or rear window is arranged in the mounted state of a workpiece designed as a motor vehicle.

It can be provided that the treatment plant comprises a gas outlet, by means of which a gas stream on a side facing away from a gas supply side of the workpiece from the treatment space can be discharged.

According to the invention, the treatment plant comprises at least one inlet opening for supplying gas to the treatment space and at least one outlet opening for removing gas from the treatment space, which are arranged on opposite sides of the workpiece, wherein a flow through the treatment space is provided such that at least 70%, preferably at least 90%, of the gas flowing through this at least one inlet opening can be discharged from the treatment space through this at least one outlet opening.

The workpiece longitudinal direction and the conveying direction are transversely, in particular vertically, aligned with each other.

It may be advantageous if the at least one inlet opening is arranged in a front area of a workpiece or in a rear area of a workpiece, while the at least one outlet opening is preferably arranged in a rear area or in a front area of the workpiece.

It may be favorable if the treatment system comprises at least one outlet opening for the removal of gas from the treatment space, which is arranged in a bottom wall or side wall or ceiling wall delimiting the treatment space.

The treatment room is preferably arranged in a housing (housing). Preferably, the treatment space is limited by a bottom wall, a side wall, another side wall or partition and / or a top wall of the housing.

In this specification and the appended claims, drying of the workpiece means, in particular, a transfer of a layer applied to the workpiece from a state immediately after the application of the layer to a state in which the layer is stable for a long time.

In particular, drying of the workpiece is removal of solvent, crosslinking of the applied layer, solidification of the applied layer, etc.

It may be favorable if the treatment installation comprises a plurality of modules, in particular circulating air modules and / or flushing modules, which are coupled, in particular supplied, by means of a common energy module.

The energy module is in particular a so-called power module.

It can be provided that the conveying device comprises a rotation device, by means of which a Drehausrichtung the workpieces is variable about a vertical axis of rotation.

A vertical axis of rotation is in particular a parallel to the direction of gravity aligned axis.

By means of a rotary device of the conveyor device, preferably, a rotational orientation of the workpieces can be changed such that the workpieces can be conveyed in a bulkier first rotational orientation, then be brought into a less bulky second rotational orientation in order to be passed through a constriction. Such a bottleneck may in particular be a lock.

After passing through the constriction, the respective workpiece can be brought into the bulkier first Drehausrichtung again preferably by means of another rotary device.

A bulkier first Drehausrichtung is in particular a Drehausrichtung designed as a vehicle body workpiece such that a workpiece longitudinal axis is aligned perpendicular to the conveying direction. A less bulky second Drehausrichtung is in particular a Drehausrichtung designed as a vehicle body workpiece such that the workpiece longitudinal axis is aligned parallel to the conveying direction.

In particular, for passing through a bottleneck, in particular lock, for example, a change to the Drehausrichtung by means of one or more rotating devices may be provided such that one or two times or more than twice a rotation is performed by 90 °.

It may be favorable if the conveying device comprises a lifting device, by means of which the workpieces can be raised from a first level to a second level and / or lowered from the second level to the first level.

Furthermore, it can be provided that the conveying device comprises a transfer device, by means of which the workpieces can be transferred from a partial conveying section to a further partial conveying section, wherein the conveying directions in the two Partial conveying distances are different from each other and wherein a global Drehausrichtung the workpieces is identical relative to the treatment plant in two sub-conveyor lines.

By means of such a transfer device preferably varies a local Drehausrichtung relative to the respective conveying direction in the sub-conveying sections.

For example, a direction of rotation rotated by 90 ° while maintaining a global Drehausrichtung be provided relative to the treatment plant.

For example, it may be provided that a lock is passed through in a workpiece longitudinal direction in order to allow a small lock width. An actual promotion, in particular by a treatment room, is preferably transverse, in particular perpendicular, to the workpiece longitudinal direction.

In one embodiment of the invention, it can be provided that the conveying device comprises a rotary device, by means of which a rotational alignment of the workpieces about a vertical axis of rotation is variable, and a lifting device, by means of which the workpieces can be raised from a first level to a second level and / or the second level can be lowered to the first level, wherein the rotary device and the lifting device are designed as an integrated handling device for handling the workpieces between two partial conveyor sections.

By means of the handling device can thus be carried out simultaneously or successively a rotation and / or lifting or lowering of single or multiple workpieces.

The workpieces are preferably conveyed by means of the conveying device along a plurality of partial conveying sections, wherein the partial conveying sections preferably complement each other to form an overall conveying path.

At least two partial conveyor sections are preferably connected to one another by means of a lifting device and / or a rotary device and / or a transfer device.

The present invention further relates to a method for treating workpieces, for example for drying coated vehicle bodies.

The invention is in this respect the task of providing a method by which an optimized workpiece treatment is feasible.

This object is achieved by a method according to claim 22.

The method preferably has one or more of the features and / or advantages described in connection with the treatment plant.

Furthermore, the treatment system preferably has one or more of the features and / or advantages described in connection with the method.

The workpieces are conveyed at least in sections through the treatment space by means of a conveying device in such a way that a longitudinal direction of the workpieces is aligned transversely, in particular substantially perpendicular, to the conveying direction.

It can be advantageous if gas is supplied to the treatment space by means of at least one inlet opening and gas is removed from the treatment space by means of at least one outlet opening, the supply on the one hand and the discharge on the other hand preferably taking place on mutually different sides of a vertical workpiece transverse center plane and / or a diagonal plane.

The workpieces are preferably conveyed discontinuously and / or clocked through the treatment room.

It may be favorable if the workpieces are stopped at one or more holding positions and there flows through a gas stream, in particular through which they are flushed.

In particular, it may be provided that the workpieces are positioned at one or more holding positions in a predetermined relative position relative to one or more inlet openings and / or one or more outlet openings, in order to allow in particular a targeted flow through the workpieces with a gas flow.

Preferably, a gas supply to the treatment space and / or a gas discharge from the treatment space is carried out continuously, in particular independently of a preferably discontinuous and / or clocked promotion of the workpieces. Due to the discontinuous and / or clocked conveying of the workpieces, in particular the stopping of the workpieces at one or more holding positions, a desired flow through the one or more workpieces can be made possible despite continuous gas flow, in particular without risking a local overheating of the respective workpiece.

It can be advantageous if the workpieces flow through, in particular flushed through, a gas stream at least in sections or at least partially in a workpiece longitudinal direction.

The gas stream may in particular be a heating gas stream for heating the workpieces and / or a purge gas stream for purging the workpieces, in particular for discharging solvent, and / or a cooling gas stream for cooling the workpieces.

As an alternative or in addition to the features mentioned above, provision may be made for the treatment space to comprise at least one heat section in which the workpieces can be heated and / or kept at a temperature which is elevated relative to an ambient temperature.

In this specification and the appended claims, an ambient temperature is to be understood as meaning in particular a temperature in the vicinity of the treatment plant, for example a hall temperature, in particular approximately 10 ° C. to 40 ° C. or approximately 20 ° C. to 25 ° C.

It may be favorable if the treatment system comprises a flushing device for flushing a flushing section of the treatment chamber with a gas flow.

The gas stream is, for example, a fresh air stream or an exhaust gas stream from a cooling section and / or an exhaust gas stream from a lock section (a lock) of the treatment plant.

It can be provided that a gas stream is passed through the treatment space several times, in particular being fed successively to different sections of the treatment space.

For example, a gas stream can be taken from a cooling zone of the treatment chamber and fed to a lock section (a lock). A gas flow discharged from the lock can then be supplied to the flushing section of the treatment chamber, for example as flushing gas flow.

It can be provided that the flushing section of the treatment chamber is arranged with respect to the conveying direction behind at least one heat section of the treatment chamber.

In particular, it may be provided that the flushing section of the treatment chamber is arranged with respect to the conveying direction immediately after at least one heat section of the treatment chamber.

It can be advantageous if the flushing section of the treatment chamber is arranged with respect to the conveying direction between at least two heat sections of the treatment chamber.

The treatment space preferably comprises at least one heating section, at least one cooling section for cooling the workpieces and at least one flushing section.

At least one rinsing section is preferably arranged with respect to the conveying direction between the at least one heat section and the at least one cooling section.

It may be favorable if the heating section, the flushing section and / or the cooling section can be connected to each other in a fluid-effectively separable manner and fluid-effectively by means of one or more separating elements.

A separating element is in particular a mechanical separating element, for example a gate. Furthermore, a separating element may for example be a fluidic separating element, in particular an airlock.

It may be favorable if the treatment system comprises a gas guide, by means of which the gas flow supplied to a rinsing section of the treatment chamber can be supplied to at least one heat section of the treatment chamber after flowing through the rinsing section.

In particular, the gas flow supplied to a rinsing section of the treatment chamber can be supplied to a plurality of, in particular two, heat sections of the treatment chamber after flowing through the rinsing section.

The gas stream is preferably divisible after flowing through the flushing section, so that in each case a partial gas flow in the respective heat section of the treatment chamber can be fed.

It may be advantageous if the gas flow supplied to a rinsing section of the treatment chamber can be supplied to at least one heat section of the treatment chamber at an end of the heat section facing away from a rinsing section after flowing through the rinsing section.

For example, it may be provided that the gas stream supplied to a rinsing section of the treatment space after passing through the rinsing section has two or more heat sections of the treatment chamber at the rinsing section remote end of the respective heat section can be fed. The respective heating section is then preferably flowed through by a gas flow from an end of the heating section facing away from the flushing section to an end of the heating section facing the flushing section.

It can be advantageous if the treatment plant comprises a flushing device, by means of which a heated gas flow can be fed to a flushing section of the treatment chamber. A heated gas stream is to be understood as meaning, in particular, a gas stream having a temperature which is higher than the ambient temperature.

A heated gas stream may be, for example, a gas stream discharged from a cooling section of the treatment plant.

Alternatively or additionally, it may be provided that the treatment plant, in particular the flushing device, for example a flushing module, comprises a heating device for heating the gas flow. The heating device may comprise, for example, an exhaust gas purification device, in particular a regenerative thermal oxidation system. Furthermore, waste heat from the treatment plant can be used to heat the gas stream.

It may be favorable if a heating section comprises at least one heating zone for heating the workpieces and / or at least one holding zone in which an elevated temperature of the workpieces can be maintained.

Preferably, each heating zone and / or each holding zone comprises one or more circulating air modules for circulating the gas stream guided in the respective heating zone and / or holding zone.

In particular, a heating section comprises a plurality of heating zones and / or a plurality of holding zones, each of which preferably comprises one or more circulating air modules.

It can be provided that a heating section comprises at least one heating zone for heating the workpieces and / or at least one holding zone in which an elevated temperature of the workpieces can be maintained, preferably each heating zone and / or each holding zone a separate heating device and / or a separate Heat exchanger for heating the guided in the respective heating zone and / or holding zone gas stream.

It may be favorable if the treatment system comprises at least one heat section, at least one flush section and at least one cooling section, wherein the at least one heat section and / or the at least one flush section are arranged above the at least one cooling section with respect to the direction of gravity.

It may be favorable if a heating section and / or a flushing section of the treatment system are arranged completely above the cooling section.

The treatment installation may, for example, comprise a lifting device by means of which the workpieces can be raised to a level of the heating section and / or the flushing section and / or lowered to a level of the cooling section.

The lifting device can for example form a lock of the treatment plant. A lock space which can be separated from the heating section and / or the cooling section is then preferably delimited by a bottom plate of the lifting device and / or a lateral partition wall. The lateral partition preferably separates the lock space from the heat section. The bottom plate preferably separates the lock space from the cooling section.

In one embodiment of the invention it can be provided that the treatment plant comprises at least one gas supply, by means of which a gas flow in a direction substantially perpendicular to an inlet opening of a workpiece extending direction can be directed into an interior of the workpiece.

The inlet opening is in particular an access to the interior, for example an opening in a workpiece designed as a vehicle body, wherein the opening serves for example for receiving a windshield or rear window.

The workpieces are preferably receivable by means of the conveying device and can be conveyed through at least one heat section, at least one rinsing section and / or at least one cooling section of the treatment space such that a longitudinal direction of the workpieces is aligned transversely, in particular substantially perpendicular, to the conveying direction.

In particular, a vehicle longitudinal axis of workpieces designed as vehicle bodies is aligned transversely, preferably perpendicular, to the conveying direction.

The treatment plant is preferably a dryer system for drying vehicle bodies.

In particular to enable energy-efficient operation of the treatment plant, it can be provided that an exhaust gas stream from a cooling section of the treatment plant is used as the purge gas stream. As a result, a heated or heated purge gas flow can be provided in an energy-efficient manner, since the gas guided through the cooling section absorbs heat from the workpieces to be cooled.

A lock (gas lock) is preferably a section of the treatment installation which is different from a flushing section.

In one embodiment of the invention can be provided that a lock gas flow for a lock after flowing through the lock as purge gas flow is supplied to the workpieces and passed through the same.

The sluice gas flow is preferably at least partially or completely a fresh air flow and / or a gas flow discharged from a heat section or cooling section of the treatment plant.

The workpieces are preferably first passed through at least one heat section of the treatment chamber and then flushed with a purge gas stream. After rinsing, the workpieces are preferably supplied to at least one further heat section of the treatment space and / or at least one cooling section of the treatment space.

For example, it can be provided that the workpieces are first supplied to the further cooling section and then a cooling section or directly after flushing the cooling section after flushing.

In one embodiment of the invention it can be provided that a rinsing section and at least one heating section and / or at least one cooling section are fluidically separated from one another by means of one or more separating elements in order to carry out a rinsing process.

In particular, in this case a clocked operation of a flushing device and / or the conveying device is provided, so that the workpieces are preferably fed to the flushing section individually or in discrete groups one after the other.

It can be advantageous if a gas stream, in particular a heated gas stream (hot gas stream), a purge gas stream and / or a cooling gas stream, is directed in an interior of the workpiece in a direction substantially perpendicular to an inlet opening of a workpiece.

By means of the flushing device is preferably a workpiece interior, in particular a body interior, rinsed. Preferably, solvent escaping from a workpiece and / or other readily volatile coating components, sealing components and / or adhesive components are thereby removable from the workpiece interior.

Preferably, workpieces of different type and / or size can be conveyed through the treatment space by means of the conveying device.

At least one inlet opening for supplying gas to the treatment space preferably comprises a nozzle or is formed by a nozzle.

It may be favorable if at least one inlet opening for supplying gas to the treatment space comprises a jet nozzle or is formed by a jet nozzle.

A jet nozzle preferably comprises a nozzle inlet and a nozzle outlet, wherein the nozzle outlet preferably has a larger cross-sectional area than the nozzle inlet and / or wherein between the nozzle inlet and the nozzle outlet preferably a continuously expanding, in particular steadily increasingly expanding, gas guide section is provided.

It can be advantageous if the jet nozzle comprises a flow influencing element, for example in the form of a central body.

The central body is preferably arranged centrally with respect to a plane oriented perpendicular to the flow direction in the nozzle in the region of the nozzle exit of the nozzle.

For example, the central body is substantially conical and widening along the flow direction.

The nozzle and / or the central body are preferably rotationally symmetrical about a common axis of rotation and / or arranged.

Further preferred features of a jet nozzle are, for example, in the WO 2014/063797 A1 the entire description of which is hereby incorporated by reference into a part of the present invention.

For example, a nozzle may have a rectangular, round, oval, or elongated cross-sectional shape.

Preferably, the nozzle is arranged with respect to its position and / or orientation adjustable on a wall, in particular a partition wall, side wall, bottom wall and / or ceiling wall, a housing bounding the treatment space. For example, planar sheets and / or elongated holes may be provided in the respective wall in order to be able to adjust the position and / or orientation of the at least one nozzle.

It may be favorable if one or more inlet openings can be closed by means of covering elements, in particular flaps.

Preferably, there is a more uniform heating and / or a more uniform cooling of the workpieces by turbulent flow in the respective workpiece interior.

It may be favorable if an exposure of sensitive workpiece areas, for example areas of thin sheet metal (in particular in the roof area of a vehicle body), with the hot gas flow is avoided or at least reduced.

Preferably results in a reduced flow of the conveying device, whereby a smaller amount of dirt discharge from a conveyor chain of the conveyor or other conveying element of the conveyor may result.

It may be favorable if a flow path between the at least one inlet opening and the at least one outlet opening is shortened, which may result in an improved dryer balance.

By a targeted local exhaust (removal of the gas flow through one or more outlet openings) preferably locally increased flow rates can be obtained in order to achieve a preferred flow of the workpieces.

The flushing device and / or a lock may for example comprise one or more separating elements, which are formed by a swing gate, a roller shutter or a lifting gate. It can be provided that in each case a separating element is arranged with respect to the conveying direction before and / or behind the workpiece to be treated, to include this during the flushing and / or lock passage.

In one embodiment of the invention can be provided that is dispensed with a mechanical separation (mechanical separating element) of the heat section. For example, a last module, which forms a heating zone or holding zone, is designed as a rinsing module. Such a flushing module is operable in particular in the fresh air exhaust mode.

A gas in a cooling section of the treatment device is preferably solvent-free. An exhaust gas flow discharged from the cooling section is thus preferably reusable in the treatment plant, for example as a gas flow to be supplied to a heating section and / or flushing section.

It may be favorable if the conveying device comprises a chain conveyor.

A conveyor chain is preferably integrated in a bottom of the housing surrounding the treatment chamber, in particular recessed.

The workpieces are arranged and / or received, for example, by means of a respective skid on the conveyor device.

It may be favorable if a skid for receiving one or more workpieces can be arranged on the conveyor device and conveyed by the same so that longitudinal axes of skid runners of the skid are aligned substantially parallel to the conveying direction.

Alternatively, it may further be provided that a skid for receiving one or more workpieces can be arranged on the conveyor device and conveyed by the latter such that longitudinal axes of skid runners of the skid are aligned transversely, in particular substantially perpendicular, to the conveying direction.

It may be favorable if one or more workpieces can be arranged on a skid and received by the skid on the conveyor device and / or conveyed by the same, that a workpiece longitudinal axis parallel or transverse, in particular substantially perpendicular to the longitudinal axes of Skidkufen the Skids and / or parallel or transverse, in particular substantially perpendicular, aligned with the conveying direction.

A bottom edge of a skid is preferably at or just above a floor level of the treatment room.

It may be favorable if the conveying device is a combination of a skid conveying device and a skidless conveying device.

However, it is also possible to provide only a skid conveying device or a skidless conveying device.

If both a skid conveying device and a skidless conveying device are provided, it can be provided that the processing system comprises a transfer device for converting the workpieces from a skid to a skidless conveying device.

It may be favorable if the treatment system comprises one or more dummy modules which form sections of the treatment space, but are neither heated nor provided with inlet openings or outlet openings. As a result, it is possible in particular to achieve equalization of the heat.

In one embodiment of the invention can be provided that the treatment plant comprises a central or higher-level heating device.

In particular, it can be provided that a plurality of circulating air units and / or purge gas units are thermally coupled to the heating device. For example, a hot gas line may be provided, by means of which hot gas (heated gas) from the heater to the circulating air units and / or Spülgasaggregaten can be fed.

One or more Umluftaggregate and / or one or more purge gas units preferably each comprise one or more heat exchangers, which on the one hand, a gas stream to be supplied to the treatment chamber and on the other hand, a hot gas stream, in particular a hot gas stream originating from the heater, can be supplied.

By means of the one or more heat exchangers, a gas flow to be supplied to the treatment space is preferably indirectly heatable.

The heating device can be, for example, a thermal exhaust gas purification device, in particular for the purification of exhaust gas discharged from the treatment chamber.

By means of suitable valves and / or flaps, a desired heating effect in the individual circulating air units and / or purge gas units can preferably be set in a targeted manner, in particular controlled and / or regulated.

Further preferred features and / or advantages of the invention are the subject of the following description and the drawings of exemplary embodiments.

• 1 eine schematische Darstellung der Funktionsweise einer ersten Ausführungsform einer Behandlungsanlage zum Behandeln von Werkstücken;
• 2 eine schematische perspektivische teilweise geschnittene Darstellung einer zweiten Ausführungsform einer Behandlungsanlage;
• 3 eine weitere schematische perspektivische Schnittdarstellung der Behandlungsanlage aus 2;
• 4 eine weitere schematische perspektivische Schnittdarstellung der Behandlungsanlage aus 2;
• 5 einen horizontalen Schnitt durch die Behandlungsanlage aus 2;
• 6 einen schrägen Schnitt durch die Behandlungsanlage aus 2;
• 7 einen horizontalen Schnitt durch mehrere Module der Behandlungsanlage aus 2;
• 8 einen schematischen vertikalen Schnitt durch die Behandlungsanlage aus 2, wobei ein Werkstück in einem Behandlungsraum der Behandlungsanlage angeordnet ist;
• 9 eine der 8 entsprechende schematische Darstellung der Behandlungsanlage aus 2, wobei ein anders geformtes und/oder dimensioniertes Werkstück in dem Behandlungsraum angeordnet ist;
• 10 eine schematische perspektivische Darstellung von Einlassöffnungen und einer Auslassöffnung der Behandlungsanlage sowie eines zu behandelnden Werkstücks;
• 11 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, bei welcher eine Querförderung und eine Gaszufuhr durch eine Deckenwand vorgesehen sind;
• 12 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, bei welcher eine Querförderung und eine Gaszuführung durch eine vertikale Seitenwand vorgesehen sind;
• 13 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine Gaszuführung durch eine konturangepasste Trennwand vorgesehen sind;
• 14 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine horizontale Gaszuführung zu einem unteren Vorderbereich des Werkstücks vorgesehen sind;
• 15 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und drei Einlassöffnungen zur Gaszuführung durch eine Bodenwand der Behandlungsanlage vorgesehen sind;
• 16 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine Gasabführung über eine in der Bodenwand angeordnete Auslassöffnung vorgesehen sind;
• 17 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine Gasabführung über eine in einer Seitenwand angeordnete Auslassöffnung vorgesehen sind;
• 18 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine längs der Förderrichtung erfolgende seitliche Gasabführung vorgesehen sind;
• 19 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Querförderung und eine Gaszuführung sowie eine Gasabführung derart vorgesehen sind, dass eine im Wesentlichen diagonale Durchströmung des Behandlungsraums erfolgt;
• 20 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Längsförderung und eine Gaszuführung gemäß der Ausführungsform in 11 vorgesehen sind;
• 21 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Längsförderung und eine Gaszuführung gemäß der in 15 dargestellten Ausführungsform vorgesehen sind;
• 22 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Längsförderung und eine Gasabführung gemäß der in 16 dargestellten Ausführungsform vorgesehen sind;
• 23 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Längsförderung und eine senkrecht zur Förderrichtung gerichtete seitliche Gasabführung vorgesehen sind;
• 24 einen schematischen vertikalen Schnitt durch eine Behandlungsanlage, wobei eine Längsförderung und eine Gaszuführung gemäß der in 19 dargestellten Ausführungsform vorgesehen sind;
• 25 eine schematische perspektivische teiltransparente Darstellung einer kaskadierten Gasführung;
• 26 eine schematische Darstellung einer alternativen Ausführungsform einer Gasführung der Behandlungsanlage;
• 27 eine schematische Darstellung einer weiteren alternativen Ausführungsform einer Gasführung der Behandlungsanlage;
• 28 eine schematische Draufsicht auf eine Fördervorrichtung, welche eine Umsetzvorrichtung umfasst;
• 29 eine schematische Draufsicht auf eine Fördervorrichtung, bei welcher zwei Umsetzvorrichtungen vorgesehen sind;
• 30 eine schematische Draufsicht auf eine weitere Ausführungsform einer Fördervorrichtung, bei welcher zwei Rotationsvorrichtungen vorgesehen sind;
• 31 eine schematische Seitenansicht einer weiteren Ausführungsform einer Fördervorrichtung, bei welcher eine Rotationsvorrichtung, eine Hebevorrichtung und eine Umsetzvorrichtung vorgesehen sind; und
• 32 eine schematische Draufsicht auf eine weitere alternative Ausführungsform einer Fördervorrichtung, bei welcher eine in einem Behandlungsraum angeordnete Rotationsvorrichtung vorgesehen ist.

In the drawings show:

• 1 a schematic representation of the operation of a first embodiment of a treatment plant for the treatment of workpieces;
• 2 a schematic perspective partially sectioned view of a second embodiment of a treatment plant;
• 3 another schematic perspective sectional view of the treatment plant 2 ;
• 4 another schematic perspective sectional view of the treatment plant 2 ;
• 5 a horizontal section through the treatment plant 2 ;
• 6 an oblique section through the treatment plant 2 ;
• 7 a horizontal section through several modules of the treatment plant 2 ;
• 8th a schematic vertical section through the treatment plant 2 wherein a workpiece is arranged in a treatment room of the treatment plant;
• 9 one of the 8th corresponding schematic representation of the treatment plant 2 wherein a differently shaped and / or dimensioned workpiece is arranged in the treatment space;
• 10 a schematic perspective view of inlet openings and an outlet opening of the treatment plant and a workpiece to be treated;
• 11 a schematic vertical section through a treatment plant, in which a cross-promotion and a gas supply are provided by a ceiling wall;
• 12 a schematic vertical section through a treatment plant, in which a transverse conveying and a gas supply are provided by a vertical side wall;
• 13 a schematic vertical section through a treatment plant, wherein a transverse conveying and a gas supply are provided by a contour-adapted partition wall;
• 14 a schematic vertical section through a treatment plant, wherein a transverse conveying and a horizontal gas supply are provided to a lower front region of the workpiece;
• 15 a schematic vertical section through a treatment plant, wherein a transverse conveying and three inlet openings to Gas supply are provided by a bottom wall of the treatment plant;
• 16 a schematic vertical section through a treatment plant, wherein a transverse conveying and a gas discharge over a disposed in the bottom wall outlet opening are provided;
• 17 a schematic vertical section through a treatment plant, wherein a transverse conveying and a gas discharge over an arranged in a side wall outlet opening are provided;
• 18 a schematic vertical section through a treatment plant, wherein a transverse conveying and along the conveying direction taking place lateral gas discharge are provided;
• 19 a schematic vertical section through a treatment plant, wherein a transverse conveying and a gas supply and a gas discharge are provided such that a substantially diagonal flow through the treatment space takes place;
• 20 a schematic vertical section through a treatment plant, wherein a longitudinal conveyor and a gas supply according to the embodiment in 11 are provided;
• 21 a schematic vertical section through a treatment plant, wherein a longitudinal conveyor and a gas supply according to the in 15 illustrated embodiment are provided;
• 22 a schematic vertical section through a treatment plant, wherein a longitudinal conveying and a gas discharge according to the in 16 illustrated embodiment are provided;
• 23 a schematic vertical section through a treatment plant, wherein a longitudinal conveying and a direction perpendicular to the conveying direction lateral gas discharge are provided;
• 24 a schematic vertical section through a treatment plant, wherein a longitudinal conveyor and a gas supply according to the in 19 illustrated embodiment are provided;
• 25 a schematic perspective partially transparent representation of a cascaded gas guide;
• 26 a schematic representation of an alternative embodiment of a gas duct of the treatment plant;
• 27 a schematic representation of another alternative embodiment of a gas duct of the treatment plant;
• 28 a schematic plan view of a conveyor, which comprises a transfer device;
• 29 a schematic plan view of a conveying device, in which two transfer devices are provided;
• 30 a schematic plan view of another embodiment of a conveying device, in which two rotating devices are provided;
• 31 a schematic side view of another embodiment of a conveying device in which a rotary device, a lifting device and a transfer device are provided; and
• 32 a schematic plan view of a further alternative embodiment of a conveying device, in which a arranged in a treatment room rotation device is provided.

Identical or functionally equivalent elements are provided with the same reference numerals in all figures.

An in 1 illustrated embodiment of a whole with 100 designated treatment plant is for example a dryer plant 102 for drying coated workpieces 104 ,

The workpieces 104 are for example vehicle bodies 106 , The coating is, for example, a paint job.

The treatment plant 100 includes a housing 108 which is a treatment room 110 surrounds.

The treatment room 110 serves to accommodate one or more workpieces 104 ,

In particular, the workpieces 104 along a conveying direction 112 through the treatment room 110 hindurchförderbar.

The treatment plant 100 For this purpose, in particular comprises a conveying device 114 , For example, a chain conveyor.

The workpieces 104 are preferably by means of a skid or skidlos on the conveyor 114 can be arranged and with the same along the conveying direction 112 movable.

The housing 108 includes two with respect to the conveying direction 112 lateral side walls 116 , one with respect to a direction of gravity 118 Bottom wall arranged below 120 and one with respect to the direction of gravity 118 overhead ceiling 122 ,

The housing 108 is in particular formed substantially cuboid.

For efficient treatment of the workpiece 104 is the treatment room 110 preferably a gas stream fed.

This includes the treatment plant 100 a gas supply 124 ,

The gas supply 124 preferably comprises a plurality of inlet openings 126 which, for example, in a side wall 116 or a partition to be described 128 of the housing 108 are arranged.

Furthermore, the treatment plant includes 100 preferably a gas discharge 130 , which in particular several outlet openings 132 includes.

The outlet openings 132 For example, in a sidewall 116 and / or in the bottom wall 120 be arranged.

In further embodiments, the inlet openings 126 and the outlet openings 132 but also be positioned differently. For example, an arrangement of inlet openings 126 and / or outlet openings 132 in the ceiling wall 122 be provided.

In the sense of optimum flow through the workpieces 104 with the gas flow are the inlet openings 126 on the one hand and the outlet openings 132 on the other hand preferably on opposite sides of the workpiece 104 arranged.

In particular, the inlet openings 126 on the one hand and the outlet openings 132 on the other hand on opposite sides of a workpiece transverse center plane 134 , a vertical longitudinal center plane 136 the treatment room 110 and / or a diagonal plane 138 the treatment room 110 arranged.

The workpiece crossmember plane 134 is in particular a plane which is perpendicular to a workpiece longitudinal direction 140 is aligned and by a respect to the workpiece longitudinal direction 140 centered geometric center or Schwerkpunkt the workpiece 104 runs.

The workpiece longitudinal direction 140 is in particular a vehicle longitudinal direction, along which a vehicle body 106 comprehensive vehicle travels in a straight line.

The vertical longitudinal center plane 136 the treatment room 110 is preferably a plane which is parallel to the conveying direction 112 and along the direction of gravity 118 runs. The vertical longitudinal center plane 136 cuts the treatment room 110 preferably in two equal half-spaces 142 , Alternatively or additionally, it can be provided that the vertical longitudinal center plane 136 through a geometric center of the treatment room 110 runs, in particular based on a maximum or average horizontal transverse extent of the treatment room 110 in a direction perpendicular to the conveying direction 112 and horizontal direction.

The treatment plant 100 preferably comprises a housing 108 whose interior 144 is divided into two parts. In particular, the interior is 144 by means of the partition 128 in one hand, the treatment room 110 and on the other hand, a distribution room 146 a distributor device 148 the treatment plant 100 divided.

The partition 128 runs preferably parallel to the conveying direction 112 and is preferably at least partially to a contour of the workpiece 104 customized.

In particular, the partition wall comprises 128 a vertical section 150 , which is in the vertical direction 118 in front of a vehicle front 152 as a vehicle body shop 106 trained workpiece 104 extends.

Alternatively or additionally, it can be provided that the partition 128 a horizontal section 154 comprising, which is substantially horizontal and at least approximately along a front hood 156 as the vehicle body 106 trained workpiece 104 extends.

Furthermore, it can be alternatively or additionally provided that the partition 128 a sloping section 158 includes, which obliquely to the direction of gravity 118 is aligned and at least approximately parallel to an A-pillar 160 as the vehicle body 106 trained workpiece 104 runs.

In an alternative embodiment of the treatment plant 100 can be a partition 128 Furthermore, be provided such that this to the contour of a vehicle rear 162 as the vehicle body 106 trained workpiece 104 is adjusted.

In particular, the vertical section runs 150 the partition 128 then in the vertical direction along the rear of the vehicle 162 ,

Furthermore, it can then be provided that the horizontal section 154 the partition 128 at least approximately along a rear hood 164 as the vehicle body 106 trained workpiece 104 extends.

In addition, it can be provided that the oblique section 158 the partition 128 then substantially parallel to a C-pillar 166 as the vehicle body 106 trained workpiece 104 runs.

By means of the gas supply 124 and the gas discharge 130 is the treatment room 110 preferably substantially diagonally and transversely, in particular perpendicular, to the conveying direction 112 perfused with a gas stream.

The inlet openings 126 and the outlet openings 132 are preferably arranged such that a workpiece interior 168 preferably at least in sections along the workpiece longitudinal direction 140 flows through the gas stream.

For this purpose, in particular, an inlet opening 126 in the sloping section 158 the partition 128 provided such that through this inlet opening 126 in the treatment room 110 inflowing gas flow into an inlet opening 170 of the workpiece 104 is directed.

The entrance opening 170 is in particular one between two A-pillars 160 as the vehicle body 106 trained workpiece 104 arranged opening for the arrangement of a windscreen.

Alternatively, it can also be an inlet opening 170 between two C-pillars 166 and / or D-pillars (not shown).

By means of the inlet openings 126 is thus in particular a gas flow directly into the workpiece interior 168 directable.

One or more in the vertical section 150 arranged inlet openings 126 are preferably used to supply the gas flow to the vehicle front 152 in a substantially horizontal direction.

One or more outlet openings 172 of the workpiece 104 are preferably in the area of the vehicle rear 162 arranged.

In the rear of the vehicle 162 near areas of the sidewall 116 and / or the bottom wall 120 are preferably the one or more outlet openings 132 arranged to direct a gas flow through the one or more outlet openings 172 from the workpiece 104 to be able to pay.

The workpiece 104 , in particular the vehicle body 106 is thus preferably in the workpiece longitudinal direction 140 from the front to the back flowed through with a gas stream.

Alternatively, however, an opposite flow can also be provided.

Due to the selected flow through the workpiece 104 can preferably be avoided that the workpiece 104 , in particular the vehicle body 106 in a roof area 174 is undesirably heated. In addition, this can preferably thereby a uniform supply of heat to the workpiece 104 be effected.

The actual supply of heat takes place in particular by transfer of heat from the supplied gas stream to the workpiece 104 ,

The gas stream is thus in particular a heated gas stream, if this via the inlet openings 126 the treatment room 110 is supplied.

To provide the gas flow includes the treatment plant 100 preferably a blower device 176 , a heater 178 , a separator 180 and / or one or more valves 182 ,

By means of the blower device 176 In particular, the gas flow is drivable.

By means of the heater 178 the gas stream is preferably directly or indirectly heated. The heater 178 may in particular comprise a thermal exhaust gas purification device, a regenerative thermal oxidation device, a support burner, a micro gas turbine and / or another combustion device.

The separation device 180 is preferably used to remove impurities from the gas stream, in particular to an undesirable loading of the coated workpiece 104 with impurities to avoid.

The separation device 180 is for example a filter device.

The one or more valves 182 are preferably used for the selective supply of fresh air, the discharge of exhaust air and / or the complete or partial recirculation.

In this specification and the appended claims, the term "air" is not necessarily used to refer to the atmospheric nitrogen-oxygen mixture. Rather, in general, any gas can be provided. In particular, the term "circulating air" preferably only designates a guidance of a gas flow in a closed circuit.

Preferably, the treatment plant comprises 100 as a feed valve 184 trained valve 182 ,

By means of the feed valve 184 A fresh air stream can preferably be supplied.

Further, preferably, a discharge valve 186 be provided. By means of the discharge valve 186 in particular, the gas stream can be discharged and / or released to the environment.

By means of a recirculation valve 188 trained valve 182 the gas stream may preferably be circulated. In particular, a predetermined amount of gas is then several times through the treatment room 110 passed.

By suitable position of the valves 182 can also be provided a regular gas supply and regular gas discharge to always at least a portion of the through the treatment room 110 to replace gas passed through. In particular, this can avoid an undesirably high pollutant concentration.

An efficient gas routing is possible in particular when the via the outlet openings 132 discharged partial gas streams, for example by means of a collection device 190 , in particular a collecting channel 192 , brought together and then continued together.

The collection channel 192 in particular, a discharge channel 194 be.

By means of a return channel 195 the merged partial gas streams are preferably jointly continued, in particular the discharge valve 186 can be supplied and delivered to the environment or, in particular via the blower device 176 , again the treatment room 110 fed.

Especially if the valves 182 are set so that at least a majority of the through the treatment room 110 guided gas flow is conducted in a recirculation loop, which is in 1 represented part of the treatment plant 100 a recirculation module 196 ,

If, however, essentially only fresh air or fresh gas to the treatment room 110 is fed, the in 1 represented part of the treatment plant 100 preferably a rinsing module 198 ,

In the 1 illustrated treatment plant 100 works in particular as follows:

By means of the blower device 176 is a gas flow in the distribution room 146 initiated and there the inlet openings 126 fed.

About the inlet openings 126 the gas stream then enters the treatment room 110 ,

The inlet openings 126 are arranged and / or formed, for example, that the gas stream, for example in the form of several partial gas streams targeted into the workpiece interior 168 of the workpiece 104 can flow in.

The gas stream then flows through the workpiece interior 168 at least approximately along the workpiece longitudinal direction 140 and then gets over the outlet openings 132 from the treatment room 110 dissipated.

By such a flow through the workpieces 104 In particular, a uniform heat transfer from the gas stream to the one or more workpieces 104 be enabled. In this way, overheated areas and too cool areas of the respective workpiece can preferably be achieved 104 be avoided.

How out 1 shows, the workpieces are 104 in the conveying direction 112 through the treatment room 110 guided, in particular such that the workpiece longitudinal direction 140 perpendicular to the conveying direction 112 is aligned.

Preferably, there is a clocked promotion of the workpieces 104 provided so that these at regular intervals in preferred holding positions relative to the inlet openings 126 and outlet openings 132 be stopped.

In particular, in the case of a continuously maintained gas flow, the preferred throughflow or purging of the workpieces can thereby be achieved 104 be guaranteed.

One in the 2 to 10 illustrated second embodiment of a treatment plant 100 corresponds in terms of structure and function essentially the treatment plant 100 according to the in 1 illustrated first embodiment.

In particular 7 can be seen, includes the treatment plant 100 several modules, for example recirculation modules 196 , which along the conveying direction 112 are arranged consecutively.

For example, there are three air circulation modules 196 provided, which each have a heating zone 200 the treatment room 110 form. For example, three more air circulation modules 196 form, for example, three holding zones 202 the treatment room 110 , Furthermore, not shown cooling zones by further air circulation modules 196 be formed.

A heating zone 200 in particular, serves to supply heat to the workpiece 104 such that it heats up.

In the holding zone 202 a heat supply is preferably such that an already existing temperature of the workpiece 104 is kept constant.

The heating zones 200 and the holding zones 202 together preferably form a heat section 204 the treatment room 110 ,

In this heat section 204 Preferably, most of the conversion process of the coating of the workpiece takes place 104 to bring the coating in the long-term stable state. In particular, crosslinking of lacquer and / or evaporation of solvents takes place here.

As 7 it can be seen, preferably comprises each module, in particular each circulating air module 196 , a separate air circulating unit 206 for driving a Umluftgasstroms in the respective circulating air module 196 ,

Each circulating air unit 206 preferably comprises a blower device 176 , a heater 178 , a separator 180 and / or one or more valves 182 , in particular a feed valve 184 , a drain valve 186 and / or a recirculation valve 188 ,

The circulating air unit 206 is in particular on a side wall 116 of the housing 108 the treatment plant 100 , in particular of the respective circulating air module 196 , docked. A side wall 116 of the housing 108 preferably forms a side wall at the same time 116 of the respective Umluftaggregats 206 , Preferably, then simple passage openings in the side wall 116 sufficient to a fluid connection between the respective Umluftaggregat 206 and the associated section of the treatment room 110 and / or the respective distribution room 146 manufacture.

By using several modules, especially recirculation modules 196 , and / or several separate Umluftaggregate 206 may preferably be a simple modular structure of the treatment plant 100 be enabled. Furthermore, this is preferably an efficient operation of the treatment plant 100 possible.

As in particular the 4 to 7 it can be seen, the heater can 178 For example, a central heating device 178 be, in which several heat exchangers 179 the heat transfer in the individual air circulation modules 196 Serve while the actual heat generation (heating power) in a central heating device 178 , For example, a thermal emission control device 181 , he follows.

The circulating air units 206 are then for example by means of a hot gas line 183 (please refer 4 ) with each other and with the thermal exhaust gas purification device 181 connected, so that in the thermal emission control device 181 produced hot gas targeted, in particular controlled and / or regulated, the individual heat exchangers 179 in the circulating air units 206 can be fed.

That in the thermal emission control device 181 produced hot gas is in particular exhaust gas from the thermal emission control device 181 , This exhaust gas is in particular a purified exhaust gas, which is thus also referred to as clean gas.

The hot gas line 183 is thus in particular a clean gas line 185 ,

By means of the heat exchanger 179 is that the treatment room 110 supplied gas preferably indirectly heated.

As in particular the 8th to 10 can be seen, for example, be provided that the workpieces 104 by means of one skid each 208 are included.

The treatment plant 100 is preferably suitable for selectively treating workpieces 104 different type and / or size (see in particular the 8th and 9 ).

By suitable positioning and / or promotion of the workpieces 104 can preferably also with different workpieces 104 a uniform flow with the gas stream can be ensured.

In particular, the workpieces 104 preferably always positionable such that in the oblique section 158 the partition 128 arranged inlet openings 126 always through an entrance opening 170 into the workpiece interior 168 are directed.

Incidentally, the right in the 2 to 10 illustrated embodiment of a treatment plant 100 in terms of structure and function with the in 1 illustrated embodiment, so that reference is made to the above description in this respect.

In the 11 to 24 are different embodiments of treatment plants 100 which are essentially only with regard to the arrangement of the inlet openings 126 , the outlet openings 132 , the dividing wall 128 and / or the conveyor 114 different from each other and from the above embodiments.

For the essential structure of the in the 11 to 24 illustrated embodiments of treatment plants 100 Therefore, reference is made to the above statements.

In the 11 to 19 are embodiments of treatment plants 100 shown, in which a cross-promotion is provided. In such a cross-promotion is in particular a promotion means of the conveyor 114 provided such that the workpiece longitudinal direction 140 transverse, in particular perpendicular, to the conveying direction 112 is aligned.

In the embodiments according to the 20 to 24 however, a longitudinal promotion is provided. In such a longitudinal conveying is the workpiece longitudinal direction 140 parallel to the conveying direction 112 aligned.

The 11 to 15 . 20 and 21 show different variants for supplying a gas stream to the treatment room 110 ,

The 16 to 18 . 22 and 23 show different variants for the removal of the gas flow from the treatment room 110 ,

The 19 and 24 show exemplary complete flows, in particular together with a variant of a gas supply and a variant of a gas discharge, wherein, for example, as a vehicle body 106 trained workpiece 104 along the workpiece longitudinal direction 140 flows from back to front with the gas flow.

In principle, all variants of the gas supply can be combined with all variants of the gas removal.

Preferably, however, is a supply of gas flow on one side of the workpiece 104 and a discharge of the gas flow on a side opposite this side of the workpiece 104 intended.

In 11 is at least one inlet opening 126 in a ceiling wall 122 of the housing 108 intended. The inlet opening 126 is designed such that a thereby flowing gas flow through the inlet opening 170 into the workpiece interior 168 of the workpiece 104 can flow.

According to 12 is an oblique supply of the gas flow in a direction of gravity 118 upper area of a vertical sidewall 116 intended. The gas flow strikes in particular obliquely from above on the front hood 156 of the workpiece 104 on and then the entrance opening 170 of the workpiece interior 168 fed.

According to 13 is at least one in the sloping section 158 a partition 128 arranged inlet opening 126 intended.

According to 14 is one in a direction of gravity 118 lower area of a vertical sidewall 116 arranged inlet opening 126 intended.

According to 15 are three along the workpiece longitudinal direction 140 distributed inlet openings 126 in the bottom wall 120 intended. The workpiece 104 is in particular contrary to the direction of gravity 118 from bottom to top with the gas flow through.

According to 16 is an outlet opening 132 in the area of the rear of the vehicle 162 in the bottom wall 120 of the housing 108 intended.

According to 17 is at least one outlet opening 132 in the area of the rear of the vehicle 162 in the sidewall 116 intended.

According to 18 is a gas discharge in a direction parallel to the conveying direction 112 extending direction, in particular with respect to the workpiece longitudinal direction 140 to one or both sides of the workpiece 104 , intended. In particular, outlet openings 132 in the area of the rear of the vehicle 162 intended.

According to 19 is an inlet opening 126 in the ceiling wall 122 provided such that a Gas stream in an inlet opening 170 between two C-pillars 166 as the vehicle body 106 trained workpiece 104 is directed.

The through the workpiece interior 168 passed gas stream is finally in a direction of gravity 118 lower area of a vertical sidewall 116 via an outlet opening arranged there 132 from the treatment room 110 dischargeable.

The gas supply according to 20 equals that of 11 ,

The gas supply according to 21 equals that of 15 ,

The gas discharge according to 22 equals that of 16 ,

The gas discharge according to 23 equals that of 18 ,

The flow through the workpiece 104 according to 19 is also in the variant according to 24 intended.

As already mentioned, in the embodiments of the treatment plant 100 according to the 20 to 24 However, no cross-promotion, but a longitudinal promotion provided.

As in particular from 24 shows, this means that the inlet openings 126 on the one hand and the outlet openings 132 on the other hand along the conveying direction 112 offset from one another.

Because the direction in which the gas stream flows in, to the one or more inlet openings 170 the workpieces 104 adapted, would be with continuous promotion of the workpieces 104 For example, a heavily overheated roof area 174 result.

The workpieces 104 are therefore by means of the conveying direction 114 preferably clocked promoted and in particular at preferred holding positions, such as in 24 shown, stopped.

In these holding positions then the desired flow through the workpiece interior 168 ,

An in 25 illustrated further embodiment of a treatment plant 100 differs from the example in 1 illustrated first embodiment essentially in that the treatment plant 100 a lock 210 includes.

Furthermore, the treatment plant includes 100 a recirculation module 196 and a rinsing module 198 ,

In particular, it is provided that the recirculation module 196 , the flushing module 198 and the lock 210 in this order along the conveying direction 112 are arranged consecutively.

The treatment plant 100 preferably comprises a gas guide such that the lock 210 unloaded gas, for example, a fresh air flow, can be fed.

The lock 210 is thus in particular an airlock.

Through the lock 210 gas passed through, in particular a lock gas flow, is by means of the gas flow of the treatment plant 100 preferably the flushing module 198 fed.

In particular, the gas stream is in the rinsing module 198 as purge gas flow through the treatment room 110 , in particular the workpiece interior 168 , passed through to dissipate previously contained impurities as completely as possible and from the workpiece interior 168 and / or the treatment room 110 to remove. The impurities are especially solvent vapors.

The from the flushing module 198 discharged purge gas stream can preferably be used further. For example, this at least partially as a supply air to a circulating air module 196 be added. Furthermore, a feed to an (not shown) exhaust gas purification device may be provided.

Through the described gas routing of the treatment plant 100 In particular, an energy-efficient operation of the treatment plant 100 be enabled.

Incidentally, the in 25 illustrated embodiment of a treatment plant 100 preferably with regard to structure and function with in 1 illustrated first embodiment, so that reference is made to the above description in this respect.

An in 26 schematically illustrated further embodiment of a treatment plant 100 is different from the one in 25 illustrated embodiment essentially in that the treatment plant 100 next to one by one or more air circulation modules 196 formed heat section 204 one for example by a flushing module 198 formed rinse section 212 and a cooling section 214 includes.

Furthermore, preferably two locks 210 provided, with a lock 210 the heat section 204 from the rinse section 212 separates. The further lock 210 separates the rinse section 212 from the cooling section 214 ,

The heat section 204 a lock 210 , the rinse section 212 , the further lock 210 and the cooling section 214 are preferably in this order with respect to the conveying direction 112 arranged consecutively.

In the 26 illustrated treatment plant 100 preferably comprises a gas supply, in which a fresh air gas flow of a lock 210 or the rinsing section 212 can be fed.

A through the rinse section 212 passed purge gas stream is preferably the heat section 204 fed. In particular, there is a supply to a rinsing section 212 opposite end 216 of the heat section 204 intended.

A discharge of the through the heating section 204 passed gas stream is preferably carried out at a rinsing section 212 facing the end 218 of the heat section 204 ,

Incidentally, the in 26 illustrated embodiment of a treatment plant 100 in terms of structure and function with the in 25 and / or one of the in the 1 to 24 illustrated embodiments, so that reference is made to the foregoing description in this respect.

An in 27 illustrated embodiment of a treatment plant 100 is different from the one in 26 illustrated embodiment essentially in that the treatment plant 100 two heat sections 204 includes, between which one by means of two locks 210 separated rinsing section 212 is arranged.

Another lock 210 is preferably between with respect to the conveying direction 112 rear heat section 204 and the cooling section 214 arranged.

At the in 27 illustrated embodiment of the treatment plant 100 is preferably provided that through the flushing section 212 passed through purge gas stream is divided and in each case a partial gas flow at a the rinsing section 212 opposite end 216 of each heat section 204 is supplied.

The discharge of the through the respective heat section 204 passed gas stream then takes place at the end 218 of each heat section 204 which is the rinse section 212 is arranged facing.

Due to the selected gas guide results in the in 27 illustrated embodiment of the treatment plant 100 a flow through the respect to the conveying direction 112 front heat section 204 preferably in the conveying direction 112 while in terms of the conveying direction 112 rear heat section 204 preferably counter to the conveying direction 112 is flowed through. This results in particular in an enrichment of solvent with respect to the conveying direction 112 front part of the treatment plant 100 , in particular before the rinsing section 212 , By guiding the gas flow in countercurrent with respect to the conveying direction 112 rear heat section 204 preferably results in a particularly low discharge of solvent to the environment.

Incidentally, the in 27 illustrated embodiment of a treatment plant 100 in terms of structure and function with the in 26 illustrated embodiment, so that reference is made to the above description in this respect.

In the 28 to 32 are different variants of conveyors 114 shown.

These different variants of the conveyor 114 may preferably in all illustrated and described variants of treatment plants 100 be used.

In particular, the conveying devices 114 while promoting the workpieces 104 along an entire conveyor line 220 intended.

This total conveyor line 220 preferably extends through all sections of the treatment plant 100 , in particular by the heat section 204 , a rinse section 212 and / or a cooling section 214 or through several of the mentioned sections 204 . 212 . 214 ,

In addition, by means of the respective conveyor 114 also passing through one or more locks 210 intended.

At the in 28 illustrated embodiment of a conveyor 114 is provided that the conveying device 114 a transfer device 222 includes.

By means of such a transfer device 222 is in particular a connection between two, for example, at an angle of 90 ° clashing sub-conveyor lines 224 the total distance 220 produced.

By means of the transfer device 222 is in particular a transfer of the workpieces 104 from a partial conveyor line 224 to the other part of the conveyor line 224 so possible that the workpieces 104 a global rotational orientation relative to the treatment plant 100 keep unchanged.

If, for example, in a first part of the conveyor line 224a a longitudinal conveying of the workpieces 104 is provided and this Teilförderstrecke 224a on a perpendicular thereto second partial conveyor line 224b meets, results in unchanged Drehausrichtung the workpieces 104 in the area of the second partial conveyor line 224b a cross promotion.

A conveyor 114 according to the in 28 embodiment shown is particularly suitable when a lock 210 must be traversed with the least possible cross-section, but after a cross-promotion is preferred.

An in 29 illustrated embodiment of a conveyor 114 is different from the one in 28 illustrated embodiment essentially in that three partial conveyor lines 224 and two transfer devices 222 are provided. By means of the conveyor 114 is in particular initially a cross-promotion of the workpieces 104 in a longitudinal promotion of the same implementable, for example, this by a lock 210 pass therethrough. Following are the workpieces 104 particularly realizable again to allow further cross-promotion.

Incidentally, the in 29 illustrated embodiment in terms of structure and function with the in 28 illustrated embodiment, so that reference is made to the above description in this respect.

By means of a conveyor 114 according to the in 29 illustrated embodiment, in particular a lateral offset of the workpieces 104 (In a direction perpendicular to the conveying direction) can be realized.

It may further be provided that a conveying device 114 essentially two conveyors 114 according to the in 29 illustrated embodiment, which are arranged and designed such that the workpieces 104 initially offset laterally and then back to an original conveyor line can be brought.

An in 30 illustrated further embodiment of a conveyor 114 is different from the one in 28 illustrated embodiment essentially in that the conveying device 114 two rotary devices 226 includes.

By means of each rotation device 226 are the workpieces 104 preferably about a vertical axis of rotation 228 rotatable.

By means of the rotation device 226 is thus a global rotational alignment of the workpieces 104 relative to the treatment plant 100 changeable, in particular without a general conveying direction 112 in two by means of the respective rotary device 226 interconnected sub-conveyor lines 224 to change.

At the in 30 illustrated embodiment of the treatment plant 100 is provided in particular that the workpieces 104 initially perpendicular to the conveying direction 112 be promoted aligned, that is, there is a cross-promotion provided. By means of a rotary device 226 is then preferably in front of a lock 210 a rotation of the workpieces 104 carried out in order to convert the cross-conveyor into a longitudinal conveyor. The workpieces 104 are then in this longitudinal orientation through the lock 210 passed through and then by means of another rotary device 226 rotated again to ultimately continue the cross-promotion.

The conveying direction 112 preferably does not change.

Incidentally, the in 30 illustrated embodiment of a conveyor 114 preferably with regard to structure and function with in 28 illustrated embodiment, so that reference is made to the above description in this respect.

An in 31 illustrated embodiment of a conveyor 114 is different from the one in 28 illustrated embodiment essentially in that the conveying device 114 both a rotating device 226 , as well as a transfer device 222 and a lifting device 230 includes.

This conveyor 114 is especially in a treatment plant 100 usable, which is designed as a so-called A-dryer.

It may be beneficial if the treatment facility 100 a heat section 204 and / or a rinsing section 212 includes, which with respect to the direction of gravity 118 , in particular completely, above a cooling section 214 is arranged. This can cause unwanted heat leakage from the heating section 204 be avoided or at least reduced.

The workpieces 104 are preferably along a first part of the conveyor line 224 through the heat section 204 durchförderbar and the rinsing section 212 fed.

The rinse section 212 is preferably by means of two mechanical separating elements 232 from the heating section 204 and / or the cooling section 214 severable.

A separator 232 For example, it may be formed as a rolling gate or lifting gate, which is located between the heating section 204 and the rinse section 212 can be introduced.

Another separating element 232 is for example a bottom plate 234 the lifting device 230 ,

The bottom plate 234 in particular closes an interior of the flushing section 212 in the direction of gravity 118 down from when the lifting device 230 is in a raised position, for example, workpieces 104 at the level of the heat section 204 to be able to record.

For the transfer of workpieces 104 in the area of the rinsing section 212 may optionally be a transfer device 222 be provided.

By means of the lifting device 230 are the workpieces 104 from the level of the heat section 204 to the level of the cooling section 214 lowered and then, in particular by means of an optional transfer device 222 , to another sub-conveyor line 224 übergebbar.

It can be provided that by means of one or more rotary devices 226 a global rotational alignment of the workpieces 104 relative to the treatment plant 100 is changed.

For example, a rotating device 226 together with the lifting device 230 an integrated handling device 236 form.

This can be provided in particular that the workpieces 104 during lifting or lowering by means of the lifting device 230 at the same time about a vertical axis of rotation 228 to be turned around.

Another rotation device 226 , which for example in the cooling section 214 Furthermore, the optimized conveying of the workpieces can be arranged 104 in this cooling section 214 serve.

Incidentally, the in 31 illustrated embodiment of a conveyor 114 and / or the entire treatment facility 100 with respect to structure and function optionally with one or more of the embodiments described above, so that reference is made to the above description thereof in this regard.

An in 32 illustrated embodiment of a conveyor 114 is different from the one in 30 illustrated embodiment essentially in that only a rotation device 226 is provided.

With regard to the conveying direction 112 in front of the lock 210 is thus preferably a longitudinal promotion of the workpieces 104 provided to the workpieces 104 with the smallest possible cross section through the lock 210 to be able to lead through. After the lock 210 is then preferably by means of the rotary device 226 the longitudinal funding can be implemented in a cross promotion.

Incidentally, the in 32 illustrated embodiment of a conveyor 114 in terms of structure and function with the in 30 illustrated embodiment, so that reference is made to the above description in this respect.

Claims (25)

Treatment plant (100) for treating workpieces (104) formed as vehicle bodies (106), wherein the treatment plant (100) comprises a treatment space (110) and a conveying device (114) by means of which the workpieces (104) are conveyed in a conveying direction (112). through the treatment space (110), characterized in that the treatment plant (100) comprises a plurality of inlet openings (126) for supplying gas to the treatment space (110) and a plurality of outlet openings (132) for removing gas from the treatment space (110) which are arranged on opposite sides of the workpiece (104), wherein a flow through the treatment space (110) is provided such that at least 70% of the gas flowing through the inlet openings (126) through the outlet openings (132) from the treatment space (110 ) are dischargeable, wherein the workpieces (104) by means of the conveying device (114) can be received and at least absch are conveyed through the treatment space (110) in such a way that a longitudinal direction (140) of the workpieces (104) is oriented transversely to the conveying direction (112), wherein the inlet openings (126) and the Outlet openings (132) are arranged so that the treatment space (110) is substantially perpendicular to the conveying direction (112) through which gas can flow. Treatment plant (100) after Claim 1 characterized in that the treatment plant (100) comprises at least one inlet port (126) for supplying gas to the treatment space (110) and at least one outlet port (132) for discharging gas from the treatment space (110) which are on opposite sides the at least one inlet opening (126) on the one hand and the at least one outlet opening (132) on the other hand are arranged on mutually different sides of a vertical workpiece transverse center plane (134). Treatment plant (100) according to one of Claims 1 or 2 , characterized in that at least one inlet opening (126) and at least one outlet opening (132) are arranged at a distance from each other which is at least 60%, in particular at least 80%, of an overall length of the workpiece (104) taken along a workpiece longitudinal direction (140). is. Treatment plant (100) according to one of Claims 1 to 3 characterized in that the treatment plant (100) comprises at least one inlet port (126) for supplying gas to the treatment space (110) and at least one outlet port (132) for discharging gas from the treatment space (110), the at least one inlet port (126) on the one hand and the at least one outlet opening (132) on the other hand with respect to a vertical longitudinal center plane (136) of the treatment chamber (110) on different sides of the treatment chamber (110) are arranged. Treatment plant (100) according to one of Claims 1 to 4 characterized in that the treatment plant (100) comprises one or more inlet openings (126) for supplying gas to the treatment space (110) and / or one or more outlet openings (132) for discharging gas from the treatment space (110) the one or more inlet openings (126) are arranged in one of two half-spaces (142) of the treatment space (110) divided by a vertical, horizontal or oblique longitudinal center plane (136) and / or wherein the one or more outlet openings (132 ) in one, in particular further, of the two by the vertical, horizontal or obliquely thereto extending longitudinal center plane (136) divided half spaces (142) of the treatment chamber (110) are arranged. Treatment plant (100) according to one of Claims 1 to 5 characterized in that the treatment plant (100) comprises a plurality of inlet openings (126) for supplying gas to the treatment space (110) and a plurality of outlet openings (132) for removing gas from the treatment space (110), the inlet openings (126) on the one hand and the outlet openings (132), on the other hand, are at least approximately opposite each other with respect to a diagonal plane (138), the diagonal plane (138) extending parallel to the conveying direction (112) and substantially diagonally through the treatment space (110). Treatment plant (100) according to one of Claims 1 to 6 characterized in that the treatment plant (100) comprises a plurality of inlet openings (126) for supplying gas to the treatment space (110) and a plurality of outlet openings (132) for removing gas from the treatment space (110), the inlet openings (126) and the outlet openings (132) are arranged so that the treatment space (110) can be flowed through at least approximately diagonally with gas. Treatment plant (100) according to one of Claims 1 to 7 characterized in that the treatment plant (100) comprises at least one circulating air module (196), each circulating air module (196) preferably comprising: - a gas supply (124) for supplying gas to the treatment space (110); and / or - a gas discharge (130) for removing gas from the treatment space (110); and / or - a blower device (176) for driving a recirculating gas flow; and or - a separator (180) for separating contaminants from the recirculating gas stream; and / or - a distributor device (148) for distributing the recirculation gas flow to be supplied to the treatment space (110) to a plurality of inlet openings (126) of the gas feed (124); and / or - a collecting device (190), by means of which the through-air gas flow discharged through a plurality of outlet openings (132) of the gas discharge (130) out of the treatment space (110) can be brought together. Treatment plant (100) according to one of Claims 1 to 8th characterized in that the treatment plant (100) comprises at least one rinsing module (198), each rinsing module (198) preferably comprising: - a gas supply (124) for supplying gas to the treatment space (110); and / or - a gas discharge (130) for removing gas from the treatment space (110); and / or - a blower device (176) for driving a purge gas stream; and / or - a separation device (180) for separating contaminants from the purge gas stream; and / or - a distributor device (148) for distributing the purge gas stream to be supplied to the treatment space (110) to a plurality of inlet openings (126) of the gas feed (124); and / or - a collecting device (190), by means of which the purge gas stream discharged from the treatment space (110) through a plurality of outlet openings (132) of the gas discharge (130) can be brought together. Treatment plant (100) according to one of Claims 8 or 9 , characterized in that the distributor device (148) is separated from the treatment space (110) by means of a dividing wall (128), wherein at least one inlet opening (126), in particular all inlet openings (126), are preferably formed in the dividing wall (128). Treatment plant (100) after Claim 10 , characterized in that the partition (128) is at least partially formed following a workpiece contour. Treatment plant (100) according to one of Claims 10 or 11 , characterized in that the partition wall (128) has an at least approximately parallel to a vehicle front (152) or a vehicle rear (162) of a vehicle body (106) extending substantially vertical portion (150), at least approximately parallel to a front hood (156) or rear hood (164) of the vehicle body (106) extending substantially horizontal portion (154) and / or at least approximately parallel to A-pillars (160) or C-pillars (166) of the vehicle body (106) extending oblique portion (158) includes. Treatment plant (100) after Claim 12 , characterized in that the partition wall (128) comprises a plurality of inlet openings (126) in the substantially vertical section (150) and / or a plurality of inlet openings extending at least approximately parallel to a vehicle front (152) or a vehicle rear end (162) of a vehicle body (106) (126) in which at least approximately parallel to A-pillars (160) or C-pillars (166) of the vehicle body (106) extending oblique portion (158). Treatment plant (100) according to one of Claims 8 to 13 , characterized in that the treatment plant (100) comprises a plurality of rinsing modules (198) and / or a plurality of circulating air modules (196), each circulating air module (196) forming a heating zone (200) or holding zone (202) of the treatment chamber (110). Treatment plant (100) according to one of Claims 8 to 14 characterized in that the collection device (190) comprises a collection channel (192) arranged preferably outside the treatment space (110), into which a plurality of outlet openings (132) open, and / or that the collection device (190) comprises a return channel (195), by means of which the recirculated-air gas stream or purge gas stream discharged from the treatment chamber (110) through a plurality of outlet openings (132) can be guided to the blower device (176), to the separation device (180) and / or to the distributor device (148). Treatment plant (100) according to one of Claims 1 to 15 characterized in that the treatment plant (100) comprises at least one inlet port (126) for supplying gas to the treatment space (110) and at least one outlet port (132) for discharging gas from the treatment space (110) which are on opposite sides of the workpiece (104) are arranged, wherein a flow through the treatment space (110) is provided such that at least 90% of the at least one inlet opening (126) flowing gas through this at least one outlet opening (132) from the treatment chamber (110) can be discharged are. Treatment plant (100) according to one of Claims 1 to 16 , characterized in that the treatment plant (100) at least one outlet opening (132) for discharging gas from the treatment chamber (110), which in a treatment space (110) defining the bottom wall (120) or side wall (116) is arranged. Treatment plant (100) according to one of Claims 1 to 17 , characterized in that the conveying device (114) comprises a rotation device (226), by means of which a Drehausrichtung the workpieces (104) about a vertical axis of rotation (228) is variable. Treatment plant (100) according to one of Claims 1 to 18 , characterized in that the conveying device (114) comprises a lifting device (230), by means of which the workpieces (104) from a first level to a second level can be raised and / or lowered from the second level to the first level. Treatment plant (100) according to one of Claims 1 to 19 , characterized in that the conveying device (114) comprises a transfer device (222), by means of which the workpieces (104) from a sub-conveying section (224) to another sub-conveying section (224) can be transferred, wherein the conveying directions (112) in the two sub-conveying sections (224) are different from each other and wherein a global rotational orientation of the workpieces (104) relative to the treatment plant (100) in both sub-conveyor lines (224) is identical. Treatment plant (100) according to one of Claims 1 to 20 , characterized in that the conveying device (114) comprises a rotary device (226), by means of which a rotational orientation of the workpieces (104) about a vertical axis of rotation (228) is variable, and a lifting device (230), by means of which the workpieces (104) can be raised from a first level to a second level and / or lowered from the second level to the first level, wherein the rotary device (226) and the lifting device (230) act as an integrated handling device (236) for handling the workpieces (104) between two partial conveyor sections (224) are formed. A method of treating workpieces (104) formed as vehicle bodies (106), for example, for drying coated vehicle bodies (106), the method comprising: passing workpieces (104) through the treatment space (110) in a conveying direction (112) the conveyor device (114), characterized in that gas is supplied by means of a plurality of inlet openings (126) to the treatment chamber (110) and discharged through a plurality of outlet openings (132) from the treatment chamber (110), wherein the inlet openings (126) on the one hand and the outlet openings (132) on the other side on opposite sides of the workpiece (104), wherein a flow through the treatment chamber (110) is provided such that at least 70% of the gas flowing through the inlet openings (126) gas through the outlet openings (132) from the treatment space (110) are discharged, the workpieces (104) by means of F conveying device (114) are at least partially conveyed through the treatment space (110) such that a longitudinal direction (140) of the workpieces (104) is oriented transversely to the conveying direction (112), wherein the inlet openings (126) and the outlet openings (132) are arranged are that the treatment chamber (110) is flowed through substantially perpendicular to the conveying direction (112) with gas. Method according to Claim 22 characterized in that gas is supplied to the treatment space (110) by means of at least one inlet opening (126) and gas is removed from the treatment space (110) by means of at least one outlet opening (132), the feed on the one hand and the discharge on the other side a vertical workpiece transverse center plane (134) takes place. Method according to one of Claims 22 or 23 , characterized in that the workpieces (104) discontinuously and / or clocked by the treatment chamber (110) are conveyed, wherein the workpieces (104) are stopped at one or more holding positions and are flowed through with a gas stream. Method according to one of Claims 22 to 24 , characterized in that the workpieces (104) are flowed through at least in sections or at least partially in a workpiece longitudinal direction (140) with a gas stream.

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