EP3387355A1 - Behandlungsanlage und verfahren zum behandeln von werkstücken - Google Patents
Behandlungsanlage und verfahren zum behandeln von werkstückenInfo
- Publication number
- EP3387355A1 EP3387355A1 EP16819831.5A EP16819831A EP3387355A1 EP 3387355 A1 EP3387355 A1 EP 3387355A1 EP 16819831 A EP16819831 A EP 16819831A EP 3387355 A1 EP3387355 A1 EP 3387355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gas
- heat transfer
- heating
- treatment
- treatment plant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 273
- 239000007789 gas Substances 0.000 claims description 579
- 230000003134 recirculating effect Effects 0.000 claims description 22
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 9
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- 238000002156 mixing Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
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- 230000005855 radiation Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
- B05D3/0413—Heating with air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
- F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
- F24H3/087—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/10—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions
- F26B15/12—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined
- F26B15/14—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in a path composed of one or more straight lines, e.g. compound, the movement being in alternate horizontal and vertical directions the lines being all horizontal or slightly inclined the objects or batches of materials being carried by trays or racks or receptacles, which may be connected to endless chains or belts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/003—Supply-air or gas filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
- F26B2210/12—Vehicle bodies, e.g. after being painted
Definitions
- the present invention relates to a treatment plant and a process for treating workpieces.
- a treatment plant is used to dry coated vehicle bodies.
- the method for treating workpieces is thus in particular a method for
- Treatment plants and treatment processes are known in particular from EP 1 998 129 Bl, US 2006/0068094 A1, EP 1 302 737 A2 and WO 02/073109 AI.
- the present invention has for its object to provide a treatment plant, which is simple in construction and allows energy-efficient workpiece treatment.
- the treatment installation for treating workpieces comprises the following:
- a treatment room comprising a plurality of treatment room sections each associated with one of a plurality of separate circulating air modules of the treatment facility;
- a heating system comprising a Schumacher entry, wherein a plurality
- Circulation air modules are coupled to the Schwarzgas entry, in particular for heating the guided through the treatment chamber sections gas.
- the treatment plant according to the invention comprises a heating system with a Bank of Congress, which is coupled to the circulating air modules, the gas to be supplied to the treatment chamber sections can be heated easily and efficiently.
- the treatment plant can thereby be operated in a particularly energy-efficient manner.
- the Walkergas entry is preferably closed in itself, for example, annular closed, so that at least a partial gas flow of a guided in the Bankgas entry Bank Bank several times flows through the Schugas entry.
- the heating gas is preferably raw gas and / or clean gas which is suitable and / or intended for use in the treatment space, that is to say for the flow through the treatment space.
- the heating gas preferably has a temperature which is higher than the gas flow in the circulating air modules and / or treatment chamber sections, at least immediately upstream of the treatment space sections.
- the heating gas is not exhaust gas of a heating device of the heating system, in particular no combustion exhaust gas.
- a "self-contained Wiengas entry” is in particular a heating gas to understand in which at least a portion of a Schugasstroms is performed in a circuit. Independently of this, a continuous or phase-wise supply of fresh gas to the heating gas flow and / or removal of heating gas from the heating gas flow can preferably also be provided in the case of a self-contained heating gas duct.
- a feed of fresh gas and a discharge of heating gas are preferably dimensioned so that in a single pass of the Schugasstroms by the Schugas entry at least 40%, preferably at least about 50%, in particular at least about 80%, for example, at least about 90%, of the past at a certain point of the Schugas Entry stream of heating gas after complete passage again reach this point.
- the supply of fresh gas and / or the discharge of heating gas from the heating gas flow is preferably carried out exclusively in the treatment space sections and / or the recirculation modules of the treatment plant.
- the heating system is associated with a fresh gas supply and / or exhaust gas discharge, by means of which fresh gas can be supplied outside the treatment space sections and / or outside the recirculation modules or heating gas can be removed from the heating gas flow.
- the circulating air modules and / or the treatment chamber sections are preferably part of the heating gas guide.
- the heating gas can preferably be passed through the treatment chamber sections at least partially several times before it (again) flows through the part of the heating gas duct located outside the circulating air modules and / or outside the treatment chamber sections.
- the heating gas guide comprises a recirculating air guide, which is formed in sections by a plurality of recirculating air modules and / or treatment space sections arranged in parallel.
- a gas stream in a circulating air circulation is preferably feasible, to which heating gas can be supplied from the Schugas.
- a partial gas flow of the circulated gas flow of each circulating air module and / or treatment chamber section from the circulating air module and / or the treatment chamber section can be discharged, guided by the Kirgas Entry in a closed circuit and finally fed as part of the Schugasstroms again one or more circulating air modules and / or treatment room sections .
- the treatment plant comprises a conveying device, by means of which the workpieces can be supplied to the treatment space, can be discharged from the treatment space and / or can be conveyed through the treatment space in a conveying direction of the conveying device.
- the treatment space sections and / or the recirculation modules are preferably arranged successively in the conveying direction.
- the circulating air modules are independent recirculation modules.
- a circulating air module in particular each circulating air module, preferably comprises the following:
- a gas supply for supplying gas to the treatment space portion
- blower device for driving a (recirculation) gas flow
- separation device for separating impurities from the (circulating) gas stream
- a distribution device for distributing the (recirculation) gas flow to be supplied to the treatment space section to a plurality of inlet ports of the gas supply;
- a collecting device by means of which the (recirculation) gas flow discharged through a plurality of outlet openings (return openings) of the gas discharge from the treatment space can be brought together.
- Each circulating air module preferably forms, together with the associated treatment space section, a, in particular complete, section of the treatment plant.
- the term “circulating air” is not necessarily set to the gas "air”. Rather, the term “circulating air” preferably denotes a gas circulated in a cycle (circulating air circulation), which in particular is treated and / or reused several times.
- supply air supply air
- exhaust air exhaust air flow
- supply air supply air
- exhaust air exhaust air flow
- the heating system comprises a heater and a heat exchanger, by means of which heat generated in the heater is transferable to a guided in the Schugas Entry heating gas.
- the heat exchanger is arranged in particular in an exhaust gas line of the heating device in order to be able to use heat contained in the exhaust gas of the heating device for heating the heating gas.
- the treatment plant comprises a different and / or independent fresh gas supply from the heating system, by means of which fresh gas can be supplied to the treatment space.
- the fresh gas is preferably independent of a heating gas flow to that guided in the circulating air modules and / or treatment space sections
- the fresh gas flow is at least partially used as a lock gas flow and is supplied in this way to the treatment space. It may be advantageous if the treatment plant comprises a fresh gas feed, by means of which fresh gas can be supplied to a guided in the Schugas arrangement heating gas flow.
- the fresh gas supply is preferably controllable and / or controllable by means of a control device, in particular depending on a current heat demand in the treatment room.
- a fresh gas stream with at least approximately constant volume flow and / or mass flow can be fed to one or more locks, in particular an inlet lock and / or an outlet lock.
- a fresh gas flow with variable volume flow and / or mass flow can be fed to one or more locks, in particular an inlet lock and / or an outlet lock.
- An at least approximately constant volume flow and / or mass flow is in particular temporally independent of a current heat demand in the treatment room.
- a variable volume flow and / or mass flow is preferably adapted to and / or controlled and / or regulated as a function of a current heat demand in the treatment space.
- a fresh gas stream with at least approximately constant volumetric flow and / or mass flow can be fed to the heating gas flow.
- a fresh gas flow with variable volume flow and / or mass flow can be supplied to the heating gas flow.
- a fresh gas stream which in particular has an at least approximately constant volumetric flow and / or mass flow, is preferably chosen such that with this an average fresh air requirement of
- Treatment plant of at least about 30%, in particular at least about 40%, for example about 50%, is covered.
- This fresh gas stream is in particular a fresh gas stream supplied to one or more airlocks.
- Another fresh gas stream which in particular has a variable volumetric flow and / or mass flow, is preferably selected such that it covers an average fresh air requirement of the treatment plant of at least approximately 30%, in particular at least approximately 40%, for example approximately 50%.
- This fresh gas stream is in particular a fresh gas stream supplied centrally to the heating gas stream.
- the fresh gas supply is preferably coupled to a heat exchanger to the exhaust line of the heater, in particular to transfer heat from the exhaust gas of the heater to the fresh gas to be supplied by means of the fresh gas supply.
- the heat exchanger for heating the fresh gas is preferably one of the heat exchanger for heating the heating gas different heat exchanger.
- a common heat exchanger on the one hand for heating the fresh gas and on the other hand for heating the heating gas.
- the fresh gas supply and the Schugas entry then have a particular common heat exchanger on.
- a cold side of the heat exchanger is then preferably divided into a plurality of segments.
- the treatment plant preferably comprises one or more locks, which are designed in particular as fresh gas locks and through which fresh gas flows or can be flowed through.
- the treatment plant comprises one or more circulating air locks, which are traversed by circulating air, that is, a circulated gas flow in a circuit or can be flowed through.
- each recirculation air lock is assigned to a circulating air module.
- the treatment plant comprises recirculating air locks
- a fresh gas stream is added directly to the heating gas stream or is admixed.
- a separate fresh gas line for supplying fresh gas to the treatment room can be dispensed with.
- the heating gas duct may comprise a central heating gas duct in which heating gas can be guided or routed and by means of which heating gas can be supplied to the heating and cooling chamber from the plurality of circulating air modules and / or treatment chamber sections, the heating gas being conveyed directly or indirectly via the circulating air modules into the respective treatment chamber sections can be introduced.
- the heating gas guide thus preferably forms a supply air duct for supplying supply air to the circulating air circuits in the treatment space sections. Furthermore, it may be provided that the heating gas guide comprises a central heating gas line, in which heating gas is guided or can be guided and by means of which gas can be discharged from the circulating air modules and / or from the treatment space sections.
- the Walkergas entry thus preferably forms an exhaust duct for the removal of exhaust air from the guided in the circulating air in the circulation gas streams.
- the heating gas guide comprises a central heating gas line, by means of which a heating gas can be guided annularly from a heat exchanger for heating the heating gas to the several circulating air modules and / or treatment space sections and back again to the heat exchanger.
- the Walkergas entry comprises a central heating gas, by means of which gas, which serves in particular as a heating gas, from one or more Umbuchmodulen and / or treatment room sections dissipatable and for heating a heat exchanger fed and then back to the one or the several Umluftmodulen and / or treatment room sections is feasible.
- the guided in the Walkergas entry heating gas is preferably driven by means of exactly one fan or by means of several fans.
- the heating gas duct comprises a plurality of branches or branches for distributing a heating gas flow guided in the heating gas duct to the circulating air modules and / or treatment chamber sections.
- the heating gas guide comprises a main supply line extending along the circulating air modules and / or treatment space sections, from which parts of the heating gas stream can be branched off and fed to the respective circulating air modules and / or treatment space sections.
- the main supply line can run, for example, outside the treatment room, in particular outside all treatment room sections, and / or parallel to the conveying direction.
- the main supply line preferably extends at least approximately over an entire length of the treatment space, in particular in order to be able to supply all circulating air ducts with heating gas.
- the main supply line runs within the treatment space and / or parallel to the conveying direction.
- the main supply line can be arranged in an intermediate region between two conveying units of the conveying device running parallel to one another and parallel to the conveying direction.
- the main supply line is preferably integrated in a floor of the treatment room or arranged directly on the floor of the treatment room.
- main supply line extends below the workpieces to be treated and / or completely underneath the workpieces to be treated, in particular directly below the workpieces to be treated
- the main supply line can contribute in particular by heat radiation and / or by convection for heating the gas flow passed through the treatment space and / or for heating the workpieces to be treated.
- the main supply line extends in particular through all
- the main supply line is formed as a rectangular channel, which has a perpendicular to the conveying direction width which is at least three times, in particular at least five times, for example at least ten times, taken perpendicular to the conveying direction height of the main supply.
- main supply line opens via inlet valves directly into return lines of the circulating air modules and / or circulating air ducts.
- branches or branches of the heating gas stream is preferably divisible to ultimately obtain a plurality of supply air streams for supplying the heating gas to the circulating air modules and / or treatment space sections.
- the heating gas guide has a main branch, by means of which a total heating gas stream can be divided into a first partial heating gas stream and a second partial heating gas stream, the first partial heating gas stream having a first circulating air module or first to nth circulating air module and / or with respect to a conveying direction of a conveying device of the treatment plant. or first treatment room section or first to n-th treatment room section can be fed and wherein the second partial heating gas stream is preferably divisible to all other circulating air modules and / or treatment space sections.
- the first circulating air module is preferably a circulating air module assigned to a treatment chamber section. However, it can also be provided that this first circulating air module is a circulating air module assigned to a circulating airlock. It may be favorable if the heating gas guide comprises a plurality of mergings for merging a plurality of gas flows discharged from the circulating air modules and / or treatment chamber sections.
- exhaust air streams from the recirculation modules and / or treatment room sections can be brought together and reheated as BankgasgeInstitutstrom again and finally again the recirculation modules and / or treatment room sections fed.
- the heating gas duct has a main junction, by means of which an exhaust gas flow of a first recirculation module or first to nth circulating air module and / or first treatment compartment section or first to nth treatment chamber section with respect to a conveying direction of the conveying device of the treatment plant with an already combined exhaust gas flow all further circulating air modules and / or treatment room sections can be brought together.
- a main branch and / or a main junction can in particular serve to reduce channel cross sections of a main supply line and / or a main discharge line of the heating gas line, in particular in order not to have to pass the entire heating gas flow in a single flow direction through the main supply line and / or the main discharge line.
- each circulating air module and / or each treatment chamber section comprises an inlet valve and / or an outlet valve, by means of which a volume flow of the Um Kunststoffmodul and / or the treatment chamber section to be supplied Schugasstroms and / or a flow of a from the circulating air module and / or Treatment room section discharged gas flow controllable and / or regulated.
- a supply air flow and / or an exhaust air flow of the recirculated air flow guided in the respective circulating air module and / or treatment space section can thereby be controlled and / or regulated.
- the treatment plant preferably comprises a control device by means of which the volumetric flow of the heating gas flow to be supplied to the circulating air module and / or treatment space section and / or the volumetric flow of the gas flow discharged from the circulating air module and / or from the treatment space section can be controlled and / or regulated.
- control device by means of the control device by controlling the volume flows always so much heating gas to the respective circulating air module and / or
- the control device is preferably designed and set up such that the described functions can be carried out and / or that the described parameters are maintained, in particular kept at least approximately constant.
- the treatment system comprises a control device by means of which an at least approximately constant volume flow of the heating gas flow guided in the heating gas flow can be maintained.
- a fan driving the heating gas flow of the heating gas guide is controlled and / or regulated, for example by varying a drive power.
- the fan (or fan) for driving the Schugasstroms preferably comprises a frequency converter, via which the control and / or regulation can take place.
- a frequency converter via which the control and / or regulation can take place.
- fluctuations in the total energy demand of the treatment plant, in particular fluctuations in the heating demand can be compensated.
- a desired value and / or an actual value for a temperature of the heating gas flow can be adapted, in particular if a low volume flow of the heating gas flow has already been set with low heating demand, for example the volume flow has been reduced to a minimum.
- the temperature of the Schugasstroms is reduced with reduced heating demand.
- the flow rate is reduced by appropriate control and / or regulation of the blower.
- the treatment system comprises a control device, by means of which an at least approximately constant temperature of the guided in the Schugas entry Walkergasstrom can be maintained.
- a bypass volume flow past a heat exchanger for heating the heating gas flow is influenced, in particular selectively varied. For example, a ratio of the volume flow performed by the heat exchanger for heating the Schugasstroms be varied to the bypass volume flow to achieve the desired temperature of the guided in the Schugas entry Walkergasstrom.
- the heating gas guide comprises one or more bypass lines for bypassing all recirculation modules and / or treatment room sections.
- a reserve of Schugasstroms can be provided, in particular to an undesirable undersupply of individual air circulation modules and / or Prevent treatment room sections.
- an oversupply of heating gas in the main supply line of the heating gas duct can be maintained.
- the main supply line opens at a downstream end thereof and / or at a rear end thereof with respect to the conveying direction into the bypass line.
- the bypass line preferably opens at an upstream end of the main discharge line and / or at a rear end thereof with respect to the conveying direction into the main discharge line.
- a bypass line is arranged, for example, upstream of a plurality of, in particular all, branches and / or branches of the heating gas guide for supplying heating gas to the circulating air modules.
- a bypass line is arranged downstream of several, in particular all, merges of the heating gas guide for merging gas streams from the circulating air modules.
- bypass line is arranged downstream of several, in particular all, branches and / or branches of the heating gas duct for supplying heating gas to the circulating air modules.
- a bypass line upstream of several, in particular all, merges the Schugas entry for merging gas streams from the air circulation modules is arranged.
- hot gas can preferably be introduced directly into a discharge section of the heating gas line, in particular in order to always keep a temperature of the gas flow guided in the discharge section above a condensation temperature.
- the bypass line branches off at a front end, with respect to the conveying direction, of a feed section of the heating gas line from the feed section of the heating gas line.
- the bypass line preferably opens at a downstream end of the Hauptabterrorism exploit and / or at a front end with respect to the conveying direction thereof in the discharge section of the Schugas effet.
- a volume flow of the heating gas flow past the bypass ducts via the bypass line is preferably controllable and / or controllable by means of a bypass valve.
- a pressure in the main supply line of the heating gas is determined.
- a heating gas requirement can be determined from this.
- a delivery rate in particular a fan speed, a fan for driving the Schugasstroms controllable and / or controllable, in particular such that the pressure in the Mannzu melt is always within a predetermined pressure range.
- a reliable heat supply to the circulating air ducts can preferably be ensured without having to provide oversupply and having to bypass the circulating air ducts via a bypass line.
- the respective positions of the intake valves and / or the exhaust valves can be determined and in the control and / or regulation of the delivery rate, in particular the Venti lator loftiere, the blower for driving the Schugasstroms be considered.
- the respective temperatures of the gas flows in the circulating air ducts especially immediately downstream of the intake valves, in or on the intake valves and / or in or on the exhaust valves determined and in the control and / or regulation the delivery rate, in particular the fan speed, of the blower for driving the Schugasstroms are considered.
- the present invention further relates to a method for treating workpieces.
- the invention is in this respect the task of providing a method by which workpieces are easy and energy-efficient treatable.
- the method according to the invention preferably has one or more of the features and / or advantages described in connection with the treatment plant.
- the treatment facility preferably has one or more features and / or advantages which are described in connection with the method.
- a partial stream of each of these gas streams is removed from the respective gas stream and replaced by a partial stream of the heating gas stream.
- a valve may be a flap.
- the circulating air modules each comprise or form a recirculating air duct.
- a recirculating air duct it can also be provided that a
- Recirculation module is only part of a recirculation, namely that part which serves to drive the guided in the circulating air gas flow. The further part is then in particular the associated treatment room section.
- each circulating air module comprises at least one fan and an intake space arranged immediately upstream of the fan.
- the suction preferably opens a feed channel, via which heating gas from a Schugastechnisch the Schugas Entry, in particular a Main supply line to the circulating air module can be fed.
- the heating gas is preferably sucked by means of the at least one fan of the circulating air module from the Schugas effet.
- a main supply line for distributing the hot gas to the circulating air modules preferably extends parallel to a conveying direction of a conveying device of the treatment plant and / or over at least approximately an entire length of the treatment space.
- the main supply line is preferably arranged outside of a housing whose interior forms the treatment space.
- the heating system comprises a main discharge line which extends parallel to the conveying direction of a conveying device of the treatment plant and / or over at least approximately an entire length of the treatment space.
- the main discharge line is preferably the discharge of from the
- Umtionsmodulen and / or treatment room sections discharged gas streams.
- the main discharge line is preferably arranged within a housing surrounding the treatment space, in particular by division or separation of part of the interior of the housing.
- At least one outlet valve of each recirculation module or each treatment chamber section for discharging a gas flow from the guided in the circulating air module and / or the treatment chamber section gas stream is arranged in a partition which divides an interior of the housing into the treatment chamber and the main discharge.
- a transverse conveyance of the workpieces, in particular of the vehicle bodies is provided.
- a vehicle longitudinal axis of the vehicle bodies is preferably aligned horizontally and perpendicular to the conveying direction of the conveying device.
- a main flow direction of the gas flow guided through a treatment space section is at least approximately parallel to a vehicle longitudinal axis of the vehicle body conveyed through.
- the main flow direction is aligned substantially parallel to the vehicle longitudinal axis such that the vehicle body is flowed around from front to rear with the gas flow.
- the main flow direction is oriented so that the vehicle body is flowed around from behind to the front with the gas flow.
- a longitudinal promotion is provided, in which the vehicle longitudinal axis is aligned parallel to the conveying direction of the conveyor.
- the treatment plant comprises a main treatment plant and a pretreatment plant.
- the main treatment plant and the pretreatment plant each comprise a separate heating gas guide.
- a treatment plant which comprises both a main treatment plant and a pretreatment plant, comprises two mutually independent, self-contained heating gas ducts, which are in particular thermally coupled to a common heating device.
- the main treatment plant preferably comprises a heat exchanger for the thermal coupling of the main treatment plant with an exhaust gas outlet of the heating device.
- the pretreatment plant comprises a heat exchanger for the thermal coupling of the pretreatment plant with the exhaust gas discharge of the heater.
- the fresh gas supply for supplying fresh gas to a treatment room of the main treatment plant and / or to a treatment room of the pretreatment plant comprises a heat exchanger, by means of which the fresh gas supply is thermally coupled to the exhaust gas discharge of the heater.
- the one or more heat exchangers are preferably arranged on or in the exhaust gas outlet.
- the heat exchanger of the fresh gas supply is preferably arranged with respect to a flow direction of the exhaust gas in the exhaust gas outlet downstream or upstream of a heat exchanger of the main treatment plant and / or upstream or downstream of a heat exchanger of the pretreatment plant.
- a heat exchanger of the main treatment plant with respect to a flow direction of the exhaust gas in the exhaust gas outlet upstream or downstream of a heat exchanger of the pretreatment plant is arranged.
- the heat exchangers are coupled to the exhaust gas discharge of the heater so that the exhaust gas discharged from the heater first to the heat exchanger of the main treatment plant, then the heat exchanger of the Pre-treatment plant and then the heat exchanger of the fresh gas supply is supplied or can be supplied.
- An exhaust gas from the pretreatment plant and an exhaust gas from the main treatment plant can preferably be brought together and supplied to the heating device as a common exhaust gas stream.
- a heat exchanger of the heating device is designed in several stages.
- a medium to be supplied to the heat exchanger is preferably successively fed to a plurality of heat transfer stages.
- the heat transfer stages are preferably arranged in such a manner and / or connected to one another in a fluid-effective manner such that a medium to be supplied to the heat exchanger flows through the heat transfer stages one after the other.
- heat transfer stages of the heat exchanger are preferably arranged with respect to a flow direction of one or more media which are to be supplied to the heat exchanger, and / or spatially consecutive, in particular in a row sequentially.
- Heat exchanger arranged spatially sequentially in one direction and with a medium, in particular a first medium, are successively flowed through in this direction.
- the heat transfer stages are preferably connected to each other in a fluid-effective manner such that a second medium to be supplied to the heat exchanger flows through the heat transfer stages in a flow-through sequence which differs from a flow-through sequence of the first medium and / or of a flow-through order of the first medium opposite flow order differs.
- heat exchangers may be advantageous if a plurality of heat exchangers together form a heat exchanger device.
- the heat exchangers are then in particular spatially separated from each other and / or spatially adjacent heat transfer sections of the heat exchanger device.
- Each heat exchanger and / or each heat transfer section preferably each comprises a plurality of heat transfer stages.
- the heat transfer sections in particular all heat transfer stages of all heat transfer sections, are preferably arranged spatially in a row in succession and / or through a medium in succession.
- Heat source forming hot gas can be flowed through.
- the hot gas is in particular exhaust gas of a heating device, in particular a thermal exhaust gas purification device and / or one or more gas turbine devices.
- a plurality of heat sink-forming media in particular cold gases, are provided, which are to be heated by heat transfer from the hot gas.
- each heat exchanger and / or each heat transfer section is assigned a respective cold gas to be heated.
- Each cold gas is preferably heatable exclusively with a separate heat exchanger and / or heat transfer section.
- a cold gas may for example be a heating gas, in particular raw gas, circulating air, etc.
- a cold gas in particular another cold gas, may be fresh air.
- a heat exchanger and / or a heat transfer section such with the hot gas on the one hand and a cold gas, such as fresh air, on the other hand can flow, that the hot gas and the cold gas flow through the heat transfer section in countercurrent, in particular based on a flow order several heat transfer stages.
- a heat exchanger and / or a heat transfer section can be flowed through in such a way with the hot gas on the one hand and a cold gas on the other hand that the cold gas alternately flows through one or more hotter and one or more colder heat transfer stages with respect to the respective preceding heat transfer stage ,
- the hotter and colder heat transfer stages result from different positions of the heat transfer stages along a flow path of the hot gas.
- a heat exchanger and / or a heat exchanger device preferably comprises or is formed from one or more tube bundle heat exchangers, in particular combination tube bundle heat exchangers.
- the heat exchanger and / or the heat exchanger device preferably comprises a plurality of mutually parallel hollow cylindrical tubes for the passage of hot gas.
- the tubes are in particular flowed around by cold gas to transfer heat from the hot gas to the cold gas.
- a space surrounding the hollow cylindrical tubes is divided by means of a plurality of separating elements into a plurality of spaced apart regions. separated heat transfer areas.
- cold gas can be selectively brought into contact with the tubes at different positions along a longitudinal extension direction of the tubes, in particular in order to enable heat transfer with different outlet temperatures (temperature of the hot gas and / or the tube in the respective heat transfer area).
- overheating of the cold gas can preferably be avoided in order ultimately to produce undesirable processes in the cold gas, in particular cracking processes or other chemical and / or thermal effects
- the separating elements are in particular separating plates, which have openings for the passage and / or reception of the hollow cylindrical tubes.
- the openings are preferably designed to be complementary to the hollow cylindrical tubes, in particular in such a way that the partition plates can be pushed onto the hollow cylindrical tubes as accurately as possible.
- the heat transfer areas define and / or are in particular the heat transfer stages.
- the hollow cylindrical tubes of the tube bundle heat exchanger extend over several, in particular all, heat transfer sections for mutually different cold gases away.
- hollow cylindrical tubes of the shell and tube heat exchanger extend over several, in particular all, heat transfer stages of several, in particular all, heat transfer sections.
- the hot gas can be passed through all the heat transfer stages of all heat transfer sections exclusively by means of completely continuous tubes.
- the heat transfer regions are connected to one another in a fluid-efficient manner, in particular by means of a connecting gas guide, preferably in such a way that the cold gas can be passed successively through a plurality of heat transfer regions.
- the separating elements preferably prevent or minimize passage of gas between individual heat transfer areas along the longitudinal direction of the tubes.
- a pressure control and / or pressure regulation for example using a matched control device for controlling and / or regulating fans and / or blowers, a pressure gradient between adjacent heat transfer areas can be generated and / or maintained.
- the pressure gradient between adjacent heat transfer regions is preferably producible and / or maintainable such that colder cold gas flows with less condensation risk from a heat transfer region through a separator to an adjacent heat transfer region in which comparatively hotter cold gas with a higher condensation risk is arranged.
- the cold gases are in particular different from each other cold gases.
- a cold gas with a lower risk of condensation is in particular fresh air and / or air from a pre-dryer.
- a cold gas with a higher risk of condensation is in particular air from a main dryer.
- condensation risk in this description and the appended claims is to be understood to mean an inclination of the gas to partially condense on cooling from the respectively currently present temperature.
- the risk of condensation is the danger that, on contact and / or mixing of the cold gas with gas from an adjacent heat transfer area gaseous solvents condense out of the cold gas.
- two heat transfer areas are separated from each other by means of two separating elements, wherein between the two separating elements, a gap region is formed, which preferably sealing air, in particular fresh air, can be fed.
- sealing air in particular fresh air
- a direct heating can be provided.
- an exhaust gas purification upstream of the treatment chamber can then additionally be provided, for example in order to minimize the introduction of pollutants (in particular NOx and CO) or any other undesired loading of the treatment space with constituents of the initially produced exhaust gas.
- pollutants in particular NOx and CO
- direct heating is provided for one or more circulating air modules and / or circulating air ducts.
- this can be advantageous for a pre-dryer which, for example, adjoins a cathodic dip-coating system.
- an optimized lacquer crosslinking can be obtained.
- exhaust gas from a micro gas turbine can be used for such direct heating.
- a) exhaust gas of a burner device for example one or more micro gas turbines or a gas burner, by means of which in particular a base load is covered;
- auxiliary burner in particular a modulating and / or modulated fan burner, for example a so-called LowNOx burner, by means of which load changes and / or load peaks are compensated;
- this purge gas has a temperature between about 40 ° C and about 80 ° C.
- Such a heating gas stream can be used in particular for heating a pre-dryer.
- an indirect heating can be provided for one or more circulating air modules and / or circulating air ducts.
- this can be advantageous for a main dryer, which adjoins, for example, a cathodic dip-coating installation.
- a heat exchanger can be used for such indirect heating.
- the Walkergas entry comprises an exhaust fan, which in particular excess Heating gas, which was not needed in the recirculation modules and / or circulating air ducts and / or was passed to a environment of the treatment plant, in particular in the atmosphere emits.
- the exhaust fan may preferably ensure a desired exhaust air volume flow and / or Abluftmassenstrom from the pre-dryer, so that a volume flow of the example supplied in direct heating Schugasstroms on the one hand and a volume flow and / or mass flow of the discharged exhaust air are balanced.
- two or more volume flow probes in particular standard volume flow probes, can be used for this purpose, wherein one volume flow probe detects a volume flow and / or mass flow of a total supplied heating gas flow and / or one volume flow probe is the sum of the volume flow and / or mass flow of the excess heating gas flow and volume flow and / or or mass flow of exhaust air discharged from the treatment room and / or determined.
- the exhaust fan is preferably controlled so that the supplied volume flow and / or mass flow corresponds to the discharged volume flow and / or mass flow.
- an injector device is provided as an alternative or in addition to a blower of a respective circulating air module and / or a respective circulating air guide.
- one or more circulating air modules and / or one or more circulating air ducts each comprise one or more injector devices.
- An injector device preferably comprises an injector nozzle, by means of which a gas stream can be introduced into the treatment space.
- the injector nozzle makes it possible to supply the gas flow to the treatment space in accordance with the injector principle.
- the gas stream is preferably air, in particular superheated air.
- the gas stream is the heating gas stream.
- the gas flow is introduced into the treatment space by means of the injector nozzle at a flow rate of at least about 10 m / s, preferably at least about 15 m / s, for example about 20 m / s.
- the gas stream can preferably be introduced into the treatment space by means of the injector nozzle at a flow rate of at most approximately 40 m / s, preferably at most approximately 30 m / s, for example approximately 25 m / s.
- the gas stream can be introduced into the treatment space by means of the injector nozzle as a jet having a jet diameter of at most approximately 200 mm, preferably at most approximately 150 mm, for example approximately 100 mm.
- the gas stream can be introduced into the treatment space by means of the injector nozzle as a jet having a jet diameter of at least approximately 10 mm, preferably at least approximately 50 mm, for example approximately 80 mm.
- the gas stream is introduced into the treatment space by means of the injector nozzle at a temperature of at least about 150 ° C, preferably at least about 200 ° C, for example at least about 250 ° C.
- the gas flow by means of the injector nozzle with a temperature of at most about 500 ° C, preferably at most about 450 ° C, for example at most about 400 ° C, in the
- Treatment room is introduced.
- a gas flow supplied to the treatment space by means of an injector nozzle is directed or can be directed, in particular, onto the workpieces and / or into an interior of the workpieces to be treated.
- Figure 1 is a schematic representation of a first embodiment of a treatment plant, in which a self-contained heating gas guide and a fresh gas supply independent thereof are provided.
- FIG. 2 is a schematic representation corresponding to FIG. 1 of a second embodiment of a treatment plant, in which an optimized flow guidance of the heating gas duct is provided;
- FIG. 3 is a schematic illustration, corresponding to FIG. 1, of a third embodiment of a treatment plant, in which the fresh gas feed opens into the heating gas duct;
- FIG. 4 is a schematic perspective view of a circulating air module of a treatment plant, including a treatment room section of a treatment room of the treatment plant;
- Fig. 5 is a schematic side view of the treatment room section of Fig. 4;
- FIG. 6 is an enlarged view of a portion of the recirculation module of FIG. 4; FIG.
- FIG. 7 shows a schematic horizontal section through a subfloor structure of the circulating air module and of the treatment chamber section from FIG. 4;
- FIG. 8 shows a schematic vertical section through the circulating air module and the treatment space section from FIG. 4 along the line.
- FIG. 9 shows a schematic vertical section through the circulating air module and the treatment space section from FIG. 4 along the line
- FIG. 10 shows a schematic vertical section through the circulating air module and the treatment space section from FIG. 4 along the line
- FIG. 11 is a schematic representation corresponding to FIG. 1 of a fourth embodiment of a treatment plant in which a pretreatment plant is provided;
- FIG. 12 is a schematic illustration, corresponding to FIG. 1, of a fifth embodiment of a treatment plant, in which an additional or alternative bypass line is provided;
- FIG. 12 is a schematic illustration, corresponding to FIG. 1, of a fifth embodiment of a treatment plant, in which an additional or alternative bypass line is provided;
- FIG. 13 is a schematic representation corresponding to FIG. 1 of a sixth embodiment of a treatment plant which an additional or alternative bypass line is provided; a corresponding schematic representation of a seventh embodiment of a treatment plant, in which an alternative fresh air supply is provided; 9 shows a schematic representation of an alternative embodiment of a treatment plant, in which a main supply line guided under the workpieces to be treated and within the treatment space is provided; a first embodiment of a heat transfer device in which a cold gas to be heated is fed to varying hotter and colder heat transfer stages; 16 is a schematic representation corresponding to FIG.
- FIG. 16 of a second embodiment of a heat exchanger device in which two heat transfer sections are provided, wherein a separate cold gas can be supplied to each heat transfer section
- 16 shows a schematic representation of a third embodiment of a heat exchanger device in which three heat transfer sections are provided, wherein a middle heat transfer section can be flowed through by a first cold gas and wherein a first and a last heat transfer section can be flowed through by one and the same further cold gas
- Fig. FIG. 19 is a schematic illustration, corresponding to FIG. 16, of a fourth embodiment of a heat transfer device, in which three heat transfer sections are provided for three different cold gases;
- FIG. 20 is a schematic representation corresponding to FIG. 16 of a fifth embodiment of a heat transfer device, in which two heat transfer sections are separated from each other by means of two separating elements, wherein a
- Fig. 21 is a schematic perspective view of a sixth
- Embodiment of a heat transfer device comprising a plurality of heat exchanger tubes and a plurality of partition plates for separating different heat transfer sections of the heat transfer device.
- a first embodiment of a treatment plant designated as a whole as 100 schematically illustrated in FIG. 1 serves to treat workpieces 102.
- the treatment installation 100 is, for example, a drying installation 104 for drying workpieces 102.
- the workpieces 102 are, for example, vehicle bodies 106.
- the treatment plant 100 preferably serves to dry previously painted or otherwise treated vehicle bodies 106.
- the workpieces 102 can be conveyed by means of a conveying device 108 of the treatment installation 100 along a conveying direction 110 through a treatment space 112 of the treatment installation 100.
- the treatment space 112 comprises a plurality, for example at least four, in particular at least six, preferably exactly seven, treatment space sections 114 or is formed by these treatment space sections 114.
- Each treatment room section 114 is preferably associated with a separate circulating air module 116.
- each circulating air module 116 is preferably a gas flow in a circuit, in particular a circulating air guide 118, feasible and can be passed through the respective treatment chamber section 114.
- a circulating air module 116 and in each case a treatment space section 114 form a recirculating air guide 118.
- each recirculation module 116 includes one or more fans 120 for driving the recycled gas flow.
- Each recirculating air module 116 and / or each treatment space section 114 further preferably includes an inlet valve 122 and an outlet valve 124.
- a gas stream serving as a feed air stream can preferably be added to the gas stream guided in the circulating air guide 118.
- a part of the gas flow guided in the recirculating air guide 118 can be removed.
- an exchange of the guided gas flow in the circulating air guide 118 can thus be carried out.
- This replacement of the gas flow guided in the circulating air guide 118 serves, in particular, to control and / or regulate certain parameters of the gas flow guided in the circulating air guide 118.
- the gas flow guided in the recirculating air guide 118 can be heated by supplying heating gas.
- This heat input then in turn serves to heat the workpiece 102 to be treated, in particular to dry a workpiece 102 formed as a vehicle body 106.
- the gas to be supplied to each circulating air guide 118 is preferably a heating gas, which can be provided by means of a heating system 126 of the treatment system 100.
- the heating system 126 preferably comprises a heating device 128 which is designed, for example, as a thermal exhaust gas purification device 130.
- a hot exhaust gas can preferably be generated, which can be discharged from the heating device 128 via an exhaust gas outlet 132.
- the heating system 126 further includes at least one heat exchanger 134, which is thermally coupled to the exhaust conduit 132 to utilize the heat of the exhaust gas to heat another medium.
- This further medium is for example a heating gas, which is guided or feasible in a closed heating gas guide 136.
- the heating gas guide 136 is in particular a recirculating air duct, in which at least a majority of the heating gas guided therein is circulated or can be guided.
- the heating gas guide 136 preferably comprises a heating gas line 138 and one or more fans 120 for driving the fuel gas guided in the heating gas line 138.
- the exhaust gas discharge line 132 of the heating device 128 is thermally coupled to the heating gas line 138.
- the heating gas line 138 preferably comprises a feed section 140, which connects the heat exchanger 134 with the circulating air modules 116 and / or the treatment space sections 114.
- heated heating gas can be supplied to the circulating air guides 118 and thus to the treatment space sections 114.
- the heating gas line 138 further comprises a discharge section 142, via which gas discharged from the circulating air ducts 118 can be discharged and fed to the heat exchanger 134 for renewed heating thereof.
- the feed section 140 of the heating gas line 138 preferably comprises a plurality of branches 144 or branches 146 in order to distribute a total heating gas flow to the individual circulating air modules 116 and / or treatment space sections 114.
- the discharge section 142 preferably includes a plurality of mergers 148 for discharging the individual ones from the recirculating air ducts 118 (Part) merge gas streams and again as a common gas stream to the heat exchanger 134 to perform.
- the heating gas guide 136 preferably further comprises a bypass line 150, by means of which a partial gas flow of the over the feed section 140 of the Edelgastechnisch 138 Um Kunststoffesten 118 supplied Schwarzgasgethesestroms be passed to all Um Kunststoffmodulen 116 and / or treatment chamber sections 114 and the Abdenrabrough 142 fed directly.
- bypass line 150 By using such a bypass line 150, it is possible to provide an oversupply of heating gas upstream of the circulating air ducts 118 so that a sufficient amount of heating gas is always available even when the heating gas demand in the circulating air ducts 118 fluctuates.
- a volume flow of the heating gas flow past the bypass duct 150 via the bypass duct 150 is preferably controllable and / or controllable by means of a bypass valve 152.
- the hot gas guide 136 preferably comprises one or more control devices 154 for controlling and / or regulating the blowers 120 and / or the inlet valves 122 and / or the outlet valves 124 and / or the bypass valve 152 of the bypass line 150.
- a distribution of the heating gas flow to the circulating air ducts 118 can be controlled and / or regulated.
- the hot gas guide 136 may further comprise a bypass line 150 in the region of the heat exchanger 134.
- This bypass line 150 and by means of one of these bypass line 150 associated bypass valve 152 is preferably controllable and / or adjustable, which partial volume flow of Schwarzgasgelegistroms for heating the same passes through the heat exchanger 134 or is guided past this. In particular, this allows a constant temperature of the Schugasstroms downstream of the heat exchanger 134 and the bypass line 150 and / or upstream of the circulating air ducts 118 are controlled and / or regulated.
- the heating gas line 138 in particular the feed section 140 of the heating gas line 138, comprises a main feed line 156.
- This main supply line 156 preferably runs outside of the treatment space 112 parallel to the conveying direction 110.
- the main supply line 156 preferably extends at least approximately over an entire length of the treatment space 112 in order to be able to supply all the circulating air guides 118 with heating gas.
- the heating gas line 138 in particular the discharge section 142 of the heating gas line 138, preferably comprises a main discharge line 158.
- the main discharge line 158 is preferably located outside the treatment room 112 or integrated into it.
- the main discharge line 158 extends parallel to the conveying direction 110 and / or at least approximately over an entire length of the treatment space 112.
- the bypass line 150 for bypassing all recirculating air ducts 118 is preferably arranged on a rear end of the main supply line 156 and / or the main discharge line 158 with respect to the conveying direction 110 of the conveying device 108.
- the treatment plant 100 further comprises a fresh gas feed 160 for supplying fresh gas to the treatment space 112.
- the fresh gas feed 160 preferably comprises a fresh gas line 162 and a blower 120 for driving a fresh gas flow in the fresh gas line 162.
- the fresh gas feed 160 preferably comprises a heat exchanger 134, by means of which the fresh gas line 162 and the exhaust gas discharge line 132 of the heating device 128 are thermally coupled to one another.
- the fresh gas supplied via the fresh gas feed 160 can thereby be heated before it is fed to the treatment space 112.
- the fresh gas line 162 preferably opens into the treatment space 112 in the region of an inlet section 164, in which the workpieces 102 are guided into the treatment space 112, and / or in the region of an outlet section 166, in which the workpieces 102 are removed from the treatment space 112.
- an inlet lock 168 and / or an outlet lock 170 in the region of the outlet section 166 are provided in the region of the inlet section 164.
- one or more intermediate locks can be provided.
- the fresh gas supplied via the fresh gas feed 160 serves, in particular, as a lock gas with which it is possible to prevent gas guided in the circulating air guides 118 from passing through the inlet section 164 and / or the outlet portion 166 is discharged to the outside of an environment of the treatment plant 100.
- the volume flow of the fresh gas flow is preferably selected such that, starting from the inlet section 164 and / or the outlet section 166, a transverse flow occurs longitudinally or counter to the conveying direction 110 and thus transversely to the gas flows guided in the circulating air ducts 118.
- An upstream end of an exhaust outlet 172 of the treatment installation 100 is therefore preferably provided substantially centrally with respect to the conveying direction 110 at the treatment space 112.
- Treatment chamber 112 dischargeable and preferably directly to the heater 128 can be fed.
- the exhaust gas discharged from the treatment chamber 112 is solvent-containing
- the exhaust gas can be purified by means of the heating device 128 using energy contained in the exhaust gas and / or released during combustion.
- the treatment plant 100 described above functions as follows:
- the workpieces 102 For heating and / or drying the workpieces 102, they are conveyed by means of the conveying device 108 through the inlet lock 168 into the treatment space 112. In the treatment space 112, the workpieces 102 successively pass through the treatment space sections 114. Individual, several or all treatment chamber sections 114 are traversed by a circulating gas flow, which has a relation to the temperature of the workpiece 102 increased temperature, so that the workpiece 102 due to the flow around and / or
- the initially relatively cold workpiece 102 absorbs the greatest amount of heat, in particular in a first treatment chamber section 114 with respect to the conveying direction 110, so that the circulating air module 116 and / or the circulating air guide 118 of this first treatment chamber section 114 must provide the greatest heating power.
- the subsequent treatment space sections 114 preferably provide continuously lower heating powers.
- the respective heating power is provided by supplying heating gas from the heating system 126 to the respective circulating air module 116 and / or the respective treatment space section 114.
- This heating gas has an elevated temperature relative to the gas flow guided in the circulating air guide 118, in order ultimately to heat the entire gas flow guided in the circulating air guide 118 and thus also the workpiece 102.
- the heating gas is provided by being heated by means of a heat exchanger 134 using hot exhaust gas of the heater 128.
- the heating gas to a
- a corresponding partial gas volume flow of the gas flow guided in the circulating air guide 118 is preferably removed from the circulating air guide 118.
- fresh gas is supplied to the treatment space 112 via the fresh gas feed 160 and gas laden with the health-relevant substances is removed via the waste gas outlet 172.
- the discharged exhaust gas is then purified in the heater 128, in particular by burning the substances contained therein.
- Exhaust gas from the heater 128 is then removed via the exhaust gas outlet 132.
- the heat contained in this exhaust gas is used to heat the fresh gas supplied via the fresh gas feed 160 and / or the heating gas guided in the heating gas guide 136.
- FIG. 2 illustrated second embodiment of a treatment plant 100 differs from the first embodiment shown in FIG. 1 essentially in that the Bankgas Gustav 138 comprises a main branch 180 and / or a main merge 182.
- the main branch 180 is preferably used to supply the heated total heating gas flow already during the supply to the main supply line 156, on the one hand, to a first recirculating air guide 118 and 15 with respect to the conveying direction 110 on the other hand to distribute to all other circulating air ducts 118.
- a flow cross-section of the main supply line 156 can be minimized, since not the entire heating gas flow for all recirculating air ducts 118 has to be guided through the main supply line 156 along the conveying direction 110, for example.
- Umbuch Unit 118 which has to provide 118 compared to the other circulating air ducts, the largest heat output, branched off and fed against the conveying direction 110 to this circulating air guide 118.
- the main assembly 182 preferably serves to bring together a partial gas flow discharged from the first recirculating air guide 118 with respect to the conveying direction 110 with the partial gas streams which have been removed from all the other circulating air guides 118. As a result, preferably, a line cross-section of the main discharge line 158 can be minimized.
- the second embodiment of the treatment system 100 shown in FIG. 2 is identical in construction and function to the one shown in FIG. 1, so that reference is made to the above description thereof.
- a third embodiment of a treatment plant 100 shown in FIG. 3 differs from the one shown in FIG. 2 illustrated embodiment essentially in that the fresh gas supply 160 opens directly into the Schugas entry 136.
- the fresh gas to be supplied to the treatment space 112 is at the in Fig. 3 illustrated third embodiment of the treatment plant 100 consequently via the Schugas Gustav 138, in particular the Zuurerabites 140 of Schugas effet 138, to the circulating air ducts 118 and thus to the respective treatment chamber sections 114 fed.
- the inlet lock 168 and the outlet lock 170 are preferably flowed through by circulating air.
- separate recirculation air modules 116 or the circulating air modules 116 of the respectively adjacent treatment space sections 114 of the inlet lock 168 or the outlet lock 170 are preferably assigned.
- FIG. 3 illustrated third embodiment in terms of structure and function with the in FIG. 2 illustrated second embodiment, so that reference is made to the above description thereof in this regard.
- conditioned or unconditioned fresh air or other fresh gas is supplied to the Schugasstrom, in particular immediately upstream of a heat exchanger 134 for heating the Schugasstroms and / or immediately upstream of a blower 120 for driving the Schugasstroms in the Walkergas entry 136.
- This can be a separate fresh gas guide 160 is reduced to a minimum or avoided altogether.
- separate channels, lines and / or insulations for supplying fresh air or other fresh gas to the inlet section 164 and / or the outlet section 166 can preferably be saved.
- FIGS. 4 to 10 An embodiment of a circulating air guide 118 shown in FIGS. 4 to 10 is an example of a circulating air guide 118 of a treatment system 100 according to FIGS. 1, 2, 3 or 11.
- the circulating air module 116 of the circulating air guide 118 is assigned to a treatment space section 114 of the circulating air guide 118, so that this
- Treatment chamber section 114 can be flowed through with a guided in a recirculating air gas flow.
- Circulation air module 116 is coupled to a main supply line 156 of a treatment plant 100 in order to be able to supply the circulating air module 116 and / or the recirculating air guide 118 formed by the circulating air module 116 and / or the treatment space section 114 with heating gas.
- the recirculation module 116 includes one or more fans 120 for driving the gas flow in the recirculation guide 118.
- the circulating air guide 118 preferably includes the one or more fans 120, a pressure chamber 190, the treatment space portion 114, a return line 192, and / or a suction space 194.
- the pressure chamber 190 is disposed immediately downstream of the one or more fans 120 and preferably serves to equalize a gas flow to be supplied to the treatment space section 114 and distribute the gas flow to a plurality of supply ports 196 for supplying the gas flow to the treatment space section 114.
- the gas stream introduced into the treatment chamber section 114 via the supply openings 196 is preferably able to be diverted from the treatment chamber section 114 partially via one or more return openings 198 and fed to the suction chamber 194 via the return line 192.
- Another part of the gas flow supplied to the treatment space section 114 via the supply openings 196 is preferably via discharge openings 200 from the recirculation guide 118 and from the treatment chamber portion 114 can be discharged and the Hauptabdies Gustav 158 fed.
- the feed openings 196, the return openings 198 and / or the discharge openings 200 are preferably arranged such that preferably at least a majority of the gas flow guided through the treatment space section 114 is supplied or can be fed on one side of the workpiece 102 and on another side of the workpiece opposite this side Workpiece 102 is discharged from the treatment chamber portion 114 or is discharged. This results in an optimized flow through the treatment chamber section 114 and an optimized heating of the workpiece 102.
- feed openings 196 which are preferably arranged in a side wall of the treatment chamber section 114
- further feed openings 196 are provided, which are arranged in a bottom 202 bounding the treatment space section 114.
- the workpiece 102 can preferably be flowed from below by means of these additional feed openings 196.
- the supply of the gas stream to the feed openings 196 arranged in the bottom 202 takes place from the pressure chamber 190 via one or more floor channels 204 extending below the floor 202 or in the floor 202.
- two such bottom channels 204 are provided to supply the gas flow to the additional feed ports 196.
- the suction space 194 is preferably located immediately upstream of the one or more blowers 120 so that gas in the suction space 194 may be drawn in via the one or more blowers 120.
- the return line 192 opens into the suction chamber 194. Furthermore, it can be provided that the suction chamber 194 is formed by a downstream end of the return line 192.
- the supply of heating gas from the main supply line 156 into the recirculating air guide 118 takes place via the suction space 194.
- a feed channel 206 is provided which fluidly connects the main feed line 156 with the suction chamber 194.
- a valve in particular the inlet valve 122, is preferably arranged in the feed channel 206 or at one or both ends thereof (not shown in FIGS. 4 to 10).
- the valve is preferably the amount (the volume flow) of the circulating air guide 118 supplied hot gas controllable and / or regulated.
- the feed channel 206 preferably opens into the suction chamber 194, by means of the one or more blower 120 simple and energy efficient heating gas from the main supply line 156 to the guided in the circulating air guide 118 gas stream can be admixed.
- the subsequent flow through the one or more blower 120 and the pressure chamber 190 also preferably a uniform mixing of the supplied fuel gas and the guided in the circulating air guide 118 remaining gas flow is ensured.
- the gas stream supplied to the treatment chamber section 114 is therefore preferably a homogeneous gas stream with preferably constant temperature despite the mixing of the heating gas.
- heating gas from the main supply line 156 can be fed directly into a bottom channel 204 in order ultimately to separate individual regions of the treatment chamber section 114 by means of the additional supply openings 196. or the workpiece 102 to heat more than the other areas.
- the main discharge line 158 is preferably integrated into a housing 208 surrounding the treatment space section 114.
- the housing 208 is formed, for example, substantially cuboid.
- the main discharge line 158 is formed, for example, by separating part of the cuboidal interior of the housing 208. In particular, it may be provided here that an upper corner region of the interior of the housing 208 for producing the main discharge line 158 is divided off from the treatment space section 114.
- the main feed line 156 is preferably outside the
- the circulating air module 116 described above and the circulating air guide 118 realized thereby preferably operate as follows:
- a gas flow is driven and initially supplied to the pressure chamber 190.
- the gas stream is introduced into the treatment space section 114.
- At least one workpiece 102 is preferably arranged, which receives heat from the gas stream by flowing it with the gas stream and is heated thereby. In particular, the workpiece 102 is thereby dried.
- the gas passed through the treatment space section 114 is removed and fed to a suction space 194. From this suction space 194, the gas therein is finally drawn in again via the one or more fans 120, so that a circuit for the guided through the treatment space section 114 gas is formed.
- the recirculated gas cools off, in particular due to the heat transfer to the workpieces 102.
- This heating gas is provided via the main supply line 156 and, if necessary, branched off via the feed channel 206 and fed to the suction space 194. In particular, the heating gas is sucked by the connection of the feed channel 206 to the suction chamber 194 by means of the one or more blowers 120 as needed from the main supply line 156.
- a portion of the guided in the circulating air guide 118 gas stream discharged from the recirculating air guide 118 Preferably at the same time via the discharge openings 200, which in particular by valves, for example, one or more exhaust valves 124th are formed, a portion of the guided in the circulating air guide 118 gas stream discharged from the recirculating air guide 118.
- a total volume flow of the gas stream guided in the circulating air guide 118 can thereby be kept constant despite the supply of heating gas.
- the discharged gas is discharged via the main discharge line 158.
- a treatment plant 100 for example according to one of the FIGS. 1 to 3 or 11, several of the in Figs. 4 to 10 shown Um Kunststoffmodule 116 and / or treatment room sections 114.
- the recirculation modules 116 and / or treatment chamber sections 114 are preferably perpendicular to the conveying direction 110 with the guided in the respective circulating air guide 118 gas flow through.
- a cross flow between two or more circulating air modules 116 and / or circulating air ducts 118 is preferably minimal.
- a transverse flow with a component parallel to the conveying direction 110 only results from fresh gas supplied from the treatment space 112 and / or from the discharge of exhaust gas from the treatment space 112 (see in particular FIGS. 1 and 2).
- Treatment room sections 114 are particularly suitable for use in a so-called transverse driving manner, in which the workpieces 102, in particular the vehicle bodies 106, are conveyed transversely, in particular vertically, to the conveying direction 110 through the treatment space 112.
- a vehicle longitudinal axis is aligned horizontally and substantially perpendicular to the conveying direction 110.
- the described embodiments can also be used in a so-called longitudinal conveying of the workpieces 102, in which the vehicle longitudinal direction is aligned parallel to the conveying direction 110.
- FIG. 11 illustrated fourth embodiment of a treatment plant 100 differs from that shown in FIG. 1, essentially in that the treatment plant 100 comprises a main treatment plant 220 and a pretreatment plant 222.
- the main treatment plant 220 is, for example, a main dryer 224.
- the pre-treatment plant 222 is, for example, a pre-dryer 226.
- the main treatment plant 220 is formed substantially identical to the first embodiment of a treatment plant 100 described with reference to FIG. 1.
- the pretreatment plant 222 is thus an optional addition to a
- Treatment plant 100 according to one of the described embodiments, in particular the first embodiment.
- the pretreatment plant 222 is preferably also essentially a treatment plant 100 according to one of the described embodiments, in particular according to the first embodiment.
- the pretreatment plant 222 is smaller in size than the main treatment plant 220.
- the pretreatment plant 222 comprises a smaller treatment space 112 and / or preferably fewer treatment space sections 114 than the main treatment plant 220.
- a pretreatment system 222 may comprise only three or four treatment space sections 114.
- the pretreatment plant 222 preferably comprises a different and / or independent heating gas duct 136 from the heating gas duct 136 of the main treatment plant 220.
- the recirculating air modules 116 and / or treatment chamber sections 114 of the pretreatment plant 222 can be fed with heating gas independently of the heating gas guide 136 of the main treatment plant 220.
- the heating gas guide 136 of the pretreatment system 222 is preferably thermally coupled by means of a separate heat exchanger 134 with the exhaust gas discharge line 132 of the heating device 128.
- the heat exchanger 134 for thermal coupling of the pretreatment system 222 with the exhaust outlet 132 of the heater 128 may be arranged with respect to the flow direction of the exhaust gas of the heater 128 in the exhaust discharge 132 upstream or downstream of the heat exchanger 134 for thermal coupling of the main treatment plant 220 with the exhaust gas discharge 132 of the heater 128 ,
- the heat exchanger 134 of the pretreatment plant 222 is preferably arranged downstream of the heat exchanger 134 of the main treatment plant 220.
- the heat exchanger 134 for coupling the fresh gas feed 160 with the exhaust gas discharge line 132 of the heating device 128 is preferably arranged downstream of the heat exchanger 134 of the main treatment plant 220 and / or downstream of the heat exchanger 134 of the pretreatment plant 222.
- the heat exchanger 134 for coupling the fresh gas feed 160 with the exhaust gas discharge line 132 of the heating device 128 is preferably arranged downstream of the heat exchanger 134 of the main treatment plant 220 and / or downstream of the heat exchanger 134 of the pretreatment plant 222.
- the entire treatment plant 100 comprises a single heater 128, by means of which the heat for both the Schugas entry 136 of the main treatment plant 220 and the Schugas entry 136 of the pretreatment plant 222 can be provided.
- the treatment plant 100 may include a common fresh gas supply 160 for supplying fresh gas to both the treatment room 112 of the main treatment facility 220 and the treatment space 112 of the pretreatment facility 222.
- the treatment plant 100 comprises two fresh gas feeds 160, wherein a fresh gas feed 160 of the main treatment plant 220 and a further fresh gas feed 160 of the pretreatment plant 222 is assigned (not shown in the figures).
- An exhaust gas from the pretreatment plant 222 can preferably be fed to the exhaust gas removal 172 of the main treatment plant 220 by means of an exhaust gas discharge 172 of the pretreatment plant 222.
- the exhaust gas from the pretreatment plant 222 is thus preferably fed together with the exhaust gas from the main treatment plant 220 to the common heating device 128.
- the workpieces 102 to be treated are preferably conveyed by means of a conveying device 108, in particular a single conveying device 108, first through the treatment space 112 of the pretreatment plant 222 and subsequently through the treatment space 112 of the main treatment plant 220.
- the pretreatment plant 222 and the main treatment plant 220 are shown spaced from each other. This is preferably only to illustrate the operation. However, it may also be provided that the pretreatment plant 222 and the main treatment plant 220 are arranged directly one after the other. For example, a lock designed as an intermediate lock fluidically separate the otherwise immediately adjacent treatment rooms 112 from each other. This intermediate lock then also forms an outlet lock 170 of the pretreatment installation 222 and an inlet lock 168 of the main treatment installation 220.
- the pretreatment plant 222 is provided in addition to the main treatment plant 220 and includes a separate Bankgas operation 136, in particular with heavy evaporation of the workpieces to be treated 102 or otherwise heavy contamination of the guided through the treatment space sections 114 gas flows a simple and efficient subdivision of the total to Treatment plant 100 belonging treatment room 112 are realized.
- the treatment plant 100 in particular both the main treatment plant 220 and the pretreatment plant 222, each taken individually, in terms of structure and function with the first embodiment shown in FIG. 1 match, so that reference is made to the above description thereof.
- FIG. 12 illustrated fifth embodiment of a treatment plant 100 differs from that shown in FIG. 1, essentially by the fact that the heating gas duct 136 comprises an additional bypass line 150, by means of which a partial gas flow of the heating gas total flow to be supplied to the circulating air ducts 118 via the feed section 140 of the heating gas duct 138 can be conducted to all circulating air modules 116 and / or treatment chamber sections 114 and directly to the discharge section 142 can be fed.
- the additional bypass line 150 branches in particular upstream of the main supply line 156, in particular upstream of all the branch lines. tions 144 and / or branches 146, from the feed section 140 of Schugastechnisch 138 from.
- the additional bypass line 150 is preferably arranged at a front end of the main supply line 156 and / or the main discharge line 158, which is preferably in the region of an inlet section 164 of the treatment installation 100, with respect to the conveying direction 110 of the conveying device 108.
- a volume flow of the heating gas flow past the bypass duct 150 via the bypass duct 150 is preferably controllable and / or controllable by means of a bypass valve 152.
- the additional bypass line 150 opens into the discharge section 142, in particular downstream of the main discharge line 158, for example downstream of all mergers 148.
- a partial gas flow from the feed section 140, bypassing the main supply line 156 and the main discharge line 158, can preferably be guided past the circulating air modules 116 and / or circulating air ducts 118.
- relatively hot gas can be introduced directly into the discharge section 142 in order to heat the gas stream to be discharged in total by means of the discharge section 142.
- the gas stream is heated in particular to a temperature which prevents unwanted formation of condensation.
- the bypass valve 152 of the bypass line 150 and thus the supply of hot gas to the discharge section 142 are preferably controlled such that an actual temperature of the gas stream guided in the discharge section 142 always exceeds the condensation temperature.
- temperature is.
- a control is provided on the basis of a predetermined minimum temperature setpoint.
- Fig. 12 illustrated fifth embodiment of the treatment plant 100 with respect to structure and function with the first embodiment shown in FIG. 1, so that reference is made to the above description thereof in this regard.
- FIG. 13 illustrated sixth embodiment of a treatment plant 100 differs from the second embodiment shown in FIG. 2 essentially by the fact that according to the in Fig. 2. 12 illustrated fifth embodiment, an additional bypass line 150 is provided.
- the sixth embodiment of a treatment plant 100 thus agrees with respect to the basic structure and the basic function with the in FIG. 2 illustrated second embodiment, so that reference is made to the above description thereof in this regard.
- the sixth embodiment of a treatment plant 100 is identical to the fifth embodiment shown in FIG. 12, so that reference is made to the above description thereof.
- one or more bypass lines 150 may be added or deleted as needed.
- the in Fig. 3 illustrated embodiment of a treatment plant 100 as needed with an additional bypass line 150 according to the in Fig. Be provided 12 illustrated fifth embodiment.
- Fig. 14 illustrated seventh embodiment of a treatment plant 100 differs from the sixth embodiment shown in Fig. 13 essentially in that the fresh gas line 162 is a branch 146 comprises, by means of which optionally different volume flows and / or mass flows of the fresh gas as lock gas or as supplied in addition to the heating gas flow fresh gas can be fed.
- the fresh gas line 162 opens on the one hand into the inlet lock 168 and the outlet lock 170 and on the other hand into the Schugas entry 136, for example, in the discharge section 142 of the Bankgas entry 136th
- a constant fresh gas flow is used as a lock gas by means of such a fresh gas feed 160 and is thereby supplied to the treatment space 112.
- a variable proportion of the supplied fresh gas which depends in particular on the parameters varying in the treatment space 112, is preferably supplied to the heating gas flow in the heating gas guide 136.
- a supply upstream of the blower 120 and / or the heat exchanger 134 of the heating gas guide 136 is provided in order to be able to condition the hot gas stream mixed with fresh gas before it is supplied to the treatment space 112.
- the seventh embodiment of the treatment installation 100 shown in FIG. 14 is identical in construction and function to the one shown in FIG. 13, so that reference is made to the above description thereof.
- FIG. 15 An eighth embodiment of a treatment installation 100 shown in FIG. 15 differs from the embodiment illustrated particularly in FIGS. 4 to 10 essentially in that the main supply line 156 of the heating gas guide 136 runs within the treatment space 112.
- the main supply line 156 extends in particular below the workpieces 102 to be treated.
- the main supply line 156 is designed in particular as a, for example, flat, rectangular channel and fixed on a floor 202 of the treatment space 112.
- Such a configuration makes it possible in particular to dispense with thermal insulation of the main supply line 156.
- simple mixing flaps are provided as inlet valves 122 between the main feed line 156 and a return line 192 of each
- Umtionsmoduls 116 provided. Separate feed channels 206 may then also be dispensable.
- the main feed line 156 is arranged between two conveyor technology strands of the conveyor device 108.
- the main supply line 156 may serve as a radiating element for heating the workpieces 102 within the treatment space 112.
- a flow direction of the fuel gas guided in the main supply line 156 preferably corresponds to the conveying direction 110 of the conveying device 108.
- Treatment plant 100 in terms of structure and function with the in Figs. 4 to 10 illustrated embodiments, so that reference is made to the above description thereof in this regard.
- FIGS. 16-21 illustrate various embodiments of heat transfer devices 300 that may form and / or replace one or more of the heat exchangers 134 described above.
- a plurality of the above-described heat exchangers 134 are jointly formed by one of the heat transfer devices 300 described below.
- a first embodiment of a heat transfer device 300 shown in FIG. 16 comprises a plurality of heat transfer stages 302, through which a cold gas to be heated can be passed successively.
- a heat-emitting hot gas flows through the heat transfer stages 302 in succession.
- the hot gas flows through, for example, a plurality of hollow cylindrical tubes 304 which extend linearly through, for example, four heat transfer stages 302.
- the heat transfer stages 302 are, for example, a first heat transfer stage 302a, a second heat transfer stage 302b, a third heat transfer stage 302c and a fourth heat transfer stage 302d.
- a space 306 surrounding the hollow cylindrical tubes 304 is flowed through by the cold gas.
- the space 306 surrounding the hollow cylindrical tubes 304 is subdivided by means of a plurality of separating elements 308, resulting in the separate heat transfer stages 302.
- the separating elements 308 extend in particular substantially perpendicular to a longitudinal direction of the hollow cylindrical tubes 304.
- the heat transfer stages 302 are thus flowed through, in particular in the cross flow, on the one hand by the heat-emitting hot gas and the heat-absorbing cold gas.
- the heat transfer stages 302 may, for example, have different dimensions, in particular depending on the position of the separating elements 308 along the hollow cylindrical tubes 304.
- a comparatively narrow first heat transfer stage 302a may be provided, to which join three larger or wider heat transfer stages 302b, 302c, 302d.
- the heat transfer stages 302, in particular the chambers 306 of the heat transfer stages 302 which surround the hollow cylindrical pipes 304 and are separated from one another by means of the separating elements 308, are fluidly connected to one another by means of a gas guide 310 such that, for example, the cold gas can flow through the heat transfer stages 302 successively in a predetermined sequence.
- the cold gas flows first through the first heat transfer stage 302a and then successively through the fourth heat transfer stage 302d, then through the third heat transfer stage 302c and finally through the second heat transfer stage 302b.
- the temperature in the heat transfer stages 302 decreases from the first heat transfer stage 302a to the fourth heat transfer stage 302d.
- the cold gas thus flows through first the hottest heat transfer stage 302 and then the remaining Heat transfer stages 302 successively with increasing temperature level.
- a second embodiment of a heat transfer device 300 illustrated in FIG. 17 differs from the first embodiment shown in FIG. 16 essentially in that the heat transfer device 300 comprises two separate heat transfer sections 312.
- Each heat transfer section 312 is associated with another to be heated cold gas.
- a heat transfer section 312 for heating a heating gas flow Downstream thereof, for example, a heat transfer section 312 for heating a fresh gas flow is provided.
- the heat transfer sections 312 are each divided into three heat transfer stages 302 per se.
- the heat transfer section 312 for heating the heating gas stream is flowed through by the heating gas such that a first heat transfer step 302a, then a third heat transfer step 302c and finally a second heat transfer step 302b are flowed through in succession.
- the heat transferring stages 302 of the heat transferring section 312 for heating the fresh gas are preferably flown through in the same order by the hot gas and the cold gas, that is, successively the first heat transferring step 302a, then the second heat transferring step 302b and finally the third heat transferring step 302c.
- the illustrated in Fig. 17 second embodiment of the heat transfer device 300 is thus in particular a combined heat exchanger, by means of which two different cold gases are heated using a single hot gas.
- the heat transfer device 300 comprises one or more bypass lines 150, by means of which, for example hot gas at one or more heat transfer stages 302 can be moved past. Furthermore, as an alternative or in addition thereto, provision can also be made for one or more cold gas streams to be able to be conducted past the associated one or more heat transfer stages 302 by means of one or more bypass lines 150.
- bypass valve 152 For controlling the respective bypass volume flow, in particular a bypass valve 152 may be provided.
- the second embodiment of the heat exchanger device 300 shown in FIG. 17 is identical in construction and function to the first embodiment shown in FIG. 16, so that reference is made to the above description thereof.
- a third embodiment of a heat transfer device 300 illustrated in FIG. 18 essentially differs from the second embodiment shown in FIG. 17 in that two heat transfer sections 312 for heating a cold gas, in particular the fresh gas Are provided, wherein between these two heat transfer sections 312, a heat transfer section 312 for heating another cold gas, in particular the Schugasstroms, is provided.
- the first heat transfer stage 302a is arranged upstream of the entire heat transfer section 312 for heating the Schugasstroms, for example, with respect to the hot gas flow, while the two other heat transfer stages 302b, 302c are arranged for heating the Frischgasstroms downstream of the heat transfer section 312 for heating the Schugasstroms.
- overheating of the heating gas stream can be reduced by first cooling the hot gas stream with the fresh gas stream before it is used to heat the heating gas stream.
- the third embodiment of the heat transfer device 300 shown in FIG. 18 is identical in structure and function to the second embodiment shown in FIG. 17, so that reference is made to the above description thereof.
- a fourth embodiment of a heat transfer device 300 shown in FIG. 19 differs from the second embodiment shown in FIG. 17 essentially in that three heat transfer sections 312 are provided for three different cold gases.
- each heat transfer section 312 includes two heat transfer stages 302.
- a heat transfer section 312 for heating a heating gas flow for a main dryer there are preferably sequentially arranged a heat transfer section 312 for heating a heating gas flow for a main dryer, a heat transfer section 312 for heating a heating gas flow for a pre-dryer, and finally a heat transfer section 312 for heating a fresh gas flow.
- a pressure gradient within the entire heat transfer device 300, in particular within the entire space 306 surrounding the hollow cylindrical tubes 304, is preferably selected such that any leakage currents which flow through the separation elements 308 from one heat transfer stage 302 to the adjacent do not cause undesirable condensation.
- a pressure in the middle heat transfer section 312 is selected to be higher than in the adjacent heat transfer sections 312, so that the cold gas guided in the central heat transfer section 312, in particular the heating gas flow for the pre-dryer, enters the adjacent heat transfer sections 312 in the event of leaks and not the other way around.
- this can preferably be avoided that hot gas with high
- the fourth embodiment of the heat exchanger device 300 shown in FIG. 19 is the same in structure and function as the second embodiment shown in FIG. 17, so that reference is made to the above description thereof.
- a fifth embodiment of a heat transfer device 300 shown in FIG. 20 differs from that shown in FIG. 19 substantially by the fact that between two adjacent heat transfer sections 312, two separating elements 308 are arranged.
- a gap region 314 between the two separating elements 308 is then flushable with, for example, a sealing gas, for example blocking air, in particular fresh gas. This can effectively prevent unwanted gas exchange between adjacent heat transfer sections 312.
- a sealing gas for example blocking air, in particular fresh gas.
- FIG. 20 The fifth embodiment of the heat exchanger device 300 shown in FIG. 20 is identical in structure and function to the fourth embodiment shown in FIG. 19, so that reference is made to the above description thereof.
- Fig. 21 is a schematic perspective view of a heat transfer device 300.
- this illustration includes the hollow cylindrical tubes 304 and the separators 308.
- the separating elements 308 are provided with bushings 316 and / or receptacles 318 for the hollow cylindrical tubes 304. In particular, the separating elements 308 can be pushed onto a bundle of hollow cylindrical tubes 304.
- the separating elements 308 are in particular plate-shaped and flat.
- the in Fig. 21 illustrated embodiment of the heat transfer device 300 is in particular a tube bundle heat exchanger 320 and can for all The described heat exchanger 134 and / or heat exchanger devices 300 can be used.
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Abstract
Description
Claims
Priority Applications (1)
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PCT/EP2016/080699 WO2017098056A1 (de) | 2015-12-10 | 2016-12-12 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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EP20182366.3A Division EP3745066A3 (de) | 2015-12-10 | 2016-12-12 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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EP23212266.3A Pending EP4306889A3 (de) | 2015-12-10 | 2016-10-20 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
EP20179795.8A Active EP3730885B1 (de) | 2015-12-10 | 2016-10-20 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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EP16819831.5A Active EP3387355B1 (de) | 2015-12-10 | 2016-12-12 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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EP23212266.3A Pending EP4306889A3 (de) | 2015-12-10 | 2016-10-20 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
EP20179795.8A Active EP3730885B1 (de) | 2015-12-10 | 2016-10-20 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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EP20179791.7A Active EP3730884B1 (de) | 2015-12-10 | 2016-10-20 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
EP20182366.3A Pending EP3745066A3 (de) | 2015-12-10 | 2016-12-12 | Behandlungsanlage und verfahren zum behandeln von werkstücken |
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US (1) | US20180356154A1 (de) |
EP (7) | EP3387354B1 (de) |
JP (1) | JP6959233B2 (de) |
KR (1) | KR20180091880A (de) |
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DE102015214706A1 (de) * | 2015-07-31 | 2017-02-02 | Dürr Systems Ag | Behandlungsanlage und Verfahren zum Behandeln von Werkstücken |
DE102015214711A1 (de) | 2015-07-31 | 2017-02-02 | Dürr Systems Ag | Behandlungsanlage und Verfahren zum Behandeln von Werkstücken |
DE102016125060B4 (de) * | 2016-12-21 | 2023-02-16 | Eisenmann Gmbh | Vorrichtung zum Temperieren von Gegenständen |
DE102018113685A1 (de) * | 2018-06-08 | 2018-08-23 | Eisenmann Se | Anlage zum Trocknen von Fahrzeugkarosserien |
JP6796874B2 (ja) * | 2018-12-11 | 2020-12-09 | 株式会社桂精機製作所 | 乾燥装置 |
JP6765621B1 (ja) * | 2020-01-29 | 2020-10-07 | 株式会社N‘studio | 乾燥炉 |
DE102020213945A1 (de) * | 2020-11-05 | 2022-05-05 | Volkswagen Aktiengesellschaft | Vorrichtung und Verfahren zum Trocknen eines Werkstücks mit kaskadierender Wärmezufuhr |
CN114076513A (zh) * | 2021-11-26 | 2022-02-22 | 南京佩尔哲汽车内饰系统有限公司 | 基于汽车复合内饰板料的双面加热装置 |
CN115111899A (zh) * | 2021-12-01 | 2022-09-27 | 安徽唯甜生物科技开发有限公司 | 一种回转式甜叶菊叶片烘干箱 |
DE102022106284A1 (de) * | 2022-03-17 | 2023-09-21 | Dürr Systems Ag | Behandlungsanlage und Verfahren zum Behandeln von Werkstücken |
DE102022113079A1 (de) | 2022-05-24 | 2023-11-30 | Dürr Systems Ag | Umbausatz für eine Behandlungsanlage und Verfahren zum Umbau einer Behandlungsanlage |
DE102022113071A1 (de) * | 2022-05-24 | 2023-11-30 | Dürr Systems Ag | Umluftanlage, Behandlungsanlage und Verfahren zum Betreiben einer Umluftanlage |
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