EP4006470A2 - Dispositif et procédé de séchage d'une pièce par fourniture de chaleur en cascade - Google Patents

Dispositif et procédé de séchage d'une pièce par fourniture de chaleur en cascade Download PDF

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Publication number
EP4006470A2
EP4006470A2 EP21203284.1A EP21203284A EP4006470A2 EP 4006470 A2 EP4006470 A2 EP 4006470A2 EP 21203284 A EP21203284 A EP 21203284A EP 4006470 A2 EP4006470 A2 EP 4006470A2
Authority
EP
European Patent Office
Prior art keywords
heating zone
zone
air
heating
exhaust air
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.)
Pending
Application number
EP21203284.1A
Other languages
German (de)
English (en)
Other versions
EP4006470A3 (fr
Inventor
Pascal Glett
Christian-André Meiners
Andreas Bürmann
Carsten Frerichs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP4006470A2 publication Critical patent/EP4006470A2/fr
Publication of EP4006470A3 publication Critical patent/EP4006470A3/fr
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/04—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour circulating over or surrounding the materials or objects to be dried
    • 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
    • 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
    • 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
    • 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 invention relates to a device and a method for drying a workpiece, the workpiece being moved through at least two heating zones.
  • the exhaust air from the warmer heating zone is fed to the cooler heating zone.
  • Painted workpieces must be dried. To do this, they are usually placed in drying systems, also known as drying tunnels, where they are gradually heated to the drying temperature in a heating area. The actual drying process requires a target temperature to be reached, which is maintained for a minimum period of time. This happens mainly in the holding zone. The workpiece is then gradually cooled in a cooling area. Both the heating area and the cooling area can each have a number of zones, to which individually tempered air is supplied. Design variables for drying systems are the amount of heat transferred and the required minimum amount of circulating air that is required for heat transfer at the surface of the workpiece.
  • each heating zone is assigned a heat exchanger that controls the temperature of the supplied air flow.
  • the heat is obtained from electrical energy, by burning fossil fuels or by recuperating process exhaust air.
  • the heated air is introduced into the heating zone by means of air conveying devices such as fans. These generate the air flows required in sections. Since a constant, always temperature-controlled afterflow of drying air must be ensured, the air is discharged from the respective heating zone and fed back to the heat exchanger in whole or in part and/or completely discharged from the system. As a result, each heating zone has to have a heat exchanger and an air conveying device, which requires a considerable amount of space and resources, and thus also costs.
  • one object of the invention is to provide a drying device or a drying method, so that the number and dimensioning, in particular, of the heat exchangers and the air conveying devices are optimized.
  • the device according to the invention can thus be part of a drying tunnel.
  • This can have further heating zones, each of which has its own heat exchanger and/or several heating zones connected to one another in the manner according to the invention.
  • the first heating zone is arranged in the drying device in relation to the direction of passage of the workpiece before the second heating zone, ie the workpiece passes through it first.
  • the temperature here is lower than in the second heating zone.
  • the first and the second heating zone can preferably be arranged adjacently, but one or more heating zones and/or (intermediate) holding zones can also be provided in between.
  • the workpiece can be a vehicle body, for example, but also any other workpiece that has a surface coating that has to be dried under the influence of temperature.
  • a heat exchanger is provided for heating the drying air flow for the second heating zone, the heat of which can be generated both separately and can also be obtained by recuperation from process exhaust air.
  • the heated air is introduced into the second heating zone by means of the second air conveying device, which can be designed, for example, as a fan.
  • the heat exchanger and the second air conveying device can be provided individually or in a common unit.
  • the heated air is now distributed around the workpiece to be dried by means of a distribution device.
  • the distribution can take place in layers and/or selectively.
  • the workpiece to be dried is preferably swept by the heated air from all directions as required, ie the air flow is adapted to the workpiece to be dried and the required drying process.
  • the supplied heated air is passed through a separator before it exits from the distribution device in order to prevent the supply and distribution of foreign bodies onto the workpiece to be dried.
  • this separator can also be provided elsewhere.
  • An exhaust air device is provided in the second heating zone in order to discharge the drying air after it has flowed around the workpiece to be dried. It can remove the drying air from the second heating zone in layers and/or selectively. The drying air is preferably sucked off by the exhaust air device.
  • the exhaust air device of the second heating zone is connected to the first heating zone in order to at least partially feed the drying air removed from the second heating zone to the first heating zone.
  • the first heating zone has a first air conveying device in order to convey the air flow into the first heating zone.
  • This first air conveying device can also be designed as a fan.
  • the exhaust air from the second heating zone does not have to be fed in full to the first heating zone; it can also be provided that some of it is discharged from the device.
  • the air is distributed in the first heating zone, preferably with a distribution device.
  • This distribution device can also supply air in layers and/or selectively into the first heating zone and advantageously also have a separator in order to remove foreign matter in the exhaust air of the second heating zone.
  • the exhaust air from the second heating zone is at a lower temperature than when it was tempered by the heat exchanger there, it is still sufficiently tempered to supply a heating zone with a lower temperature requirement.
  • This can be the adjacent heating zone, but it can also be any other heating zone in the heating area of the device for which the exhaust air temperature of the second heating zone is sufficient to heat the workpiece. If an (intermediate) holding zone with a lower temperature requirement is provided, part of the exhaust air from the second heating zone can optionally also be fed to this.
  • the interaction between the first and second heating zone ie the supply of exhaust air from the second heating zone into the first heating zone, is also referred to below as a cascade.
  • a device for drying a workpiece can be designed with a number of cascades.
  • the first air conveying device can also be made smaller, depending on the required circulating air flows, than would be necessary if unheated or less heated air was supplied.
  • a further advantage is that the temperature difference between the air supplied to the first heating zone and the workpiece to be heated is small, so that the thermal load on the workpiece is lower.
  • the first heating zone has an exhaust air device which is connected to the second heating zone in such a way that exhaust air from the first heating zone is at least partially fed to the heat exchanger of the second heating zone. Since the exhaust air from the first heating zone still has a comparatively high temperature, it has proven to be advantageous to feed it to the heat exchanger of the second heating zone and to heat it to the temperature required there. Compared to the supply of non-tempered air and its heating, considerable energy can be saved in this way.
  • an exhaust air device is provided and connected to the second heating zone, in particular to its heat exchanger. The air from the first heating zone can pass through the exhaust air device is discharged in layers and/or selectively from the first heating zone, in particular sucked off.
  • the device has a further heating zone which provides a lower temperature range than the first heating zone, the further heating zone has a further air conveying device and the exhaust air device of the first heating zone is connected to the further heating zone in such a way that exhaust air the first heating zone is to be fed at least partially into the further heating zone by means of the further air conveying device.
  • a further heating zone is therefore provided whose temperature requirement is lower than that of the first heating zone.
  • the workpiece to be dried first passes through this further heating zone before it is fed to the other two heating zones.
  • the first, second and further heating zones do not have to be adjacent to one another, even if this is definitely advantageous.
  • the further heating zone also has an air conveying device in order to introduce a stream of heated air into the further heating zone.
  • the exhaust air device of the first heating zone provides the exhaust air from the first heating zone, so that it is at least partially introduced into the further heating zone by means of the additional air conveying device.
  • the further heating zone can have an exhaust air device.
  • the air discharged from the further exhaust air device can be fed at least partially to the heat exchanger of the second heating zone.
  • exhaust air from a heating zone with a higher temperature requirement is applied to further heating zones, each with a lower temperature requirement, in order to save on further heat exchangers.
  • the condition for this is that the exhaust air still has a sufficient temperature for the heating zone to be supplied.
  • a cascade can thus be extended as required.
  • the device can have an inlet air lock which is connected to the exhaust air device of the first heating zone and/or to an exhaust air device of the further heating zone in such a way that the exhaust air of the first heating zone and/or the exhaust air of the further heating zone is at least partially fed to the entrance air lock .
  • the exhaust air from the first and/or the further exhaust air zone can be used to already provide a suitable input temperature in the input lock of the device for drying a workpiece, without having to provide a separate heat exchanger for this purpose.
  • an air conveying device may be required in the entry lock.
  • the exhaust air from the first and/or the further heating zone can be the only supply air for the entry lock, but it can also be fed to the entry lock mixed with fresh air.
  • the device has a device for thermal post-combustion, to which the exhaust air of at least one of the heating zones is to be fed.
  • organic compounds also referred to as VOC, volatile organic compound
  • Thermal post-combustion devices are used to remove these organic compounds from the exhaust air.
  • the exhaust air is subjected to thermal combustion at temperatures above 500°C.
  • the device for thermal post-combustion can be supplied with the air of one or more or each of the heating zones described, but at least the portion that is not supplied for another use in the device.
  • the device for thermal post-combustion is preferably connected to the heat exchanger of the second heating zone, so that the exhaust air from the device for thermal post-combustion is to be fed to the heat exchanger of the second heating zone.
  • the exhaust air from the device for thermal post-combustion can be used to heat the incoming air for the second heating zone, so that the energy requirement for heating the incoming air for the second heating zone can be reduced.
  • a zone separation is formed between the entry lock and the adjacent heating zone and/or between each two adjacent heating zones.
  • a lock can be understood to prevent or at least reduce the exchange of air and thus also the temperature between adjacent zones, in order to maintain the desired temperature regime along a device for drying a workpiece. This also serves to further save energy.
  • Adjacent heating zones in this context can be the first and the second heating zone and/or the first and the further heating zone, provided they are immediately adjacent, but it also includes heating zones or optionally (intermediate) holding zones which are not part of the cascade according to the invention .
  • a device for supplying fresh air can be arranged at a zone separation, before or after an air conveying device and/or on the heat exchanger of the second heating zone. This may include any of the zone separations along the workpiece drying apparatus and any of the air handling equipment employed therein.
  • a device for supplying fresh air serves to supply fresh air from the environment to the drying air flow. This can be done as part of a temperature adjustment, but also to replace air that has been removed from the system.
  • the fresh air can be supplied to the circulating air circuit at the points mentioned and preferably mixed with it using a mixing device.
  • the fresh air can be routed past a heat exchanger and tempered, or the device for supplying fresh air can preheat the fresh air.
  • a device for supplying fresh air to the heat exchanger of the second heating zone can be arranged in front of the heat exchanger there or can be integrated into it.
  • the device according to the invention can have a holding zone which provides a defined temperature range for drying the workpiece, the holding zone having a holding zone heat exchanger, a first holding zone air conveying device and a holding zone exhaust air device and the holding zone having a second holding zone air conveying device, and the holding zone exhaust air device such is connected to the second holding zone air conveying device, that the exhaust air from the holding zone exhaust air device is at least partially fed back to the holding zone by means of the second holding zone air conveying device and/or the holding zone exhaust air device is connected to an air conveying device of a heating zone in such a way that the exhaust air from the holding zone exhaust air device is at least partially conveyed to the heating zone by means of the air conveying device is to be supplied.
  • a cascade can therefore be formed within the holding zone and/or across between the holding zone and a heating zone.
  • a defined temperature range should be understood to mean a temperature span that must be maintained for a minimum period of time in order to dry the workpiece. This can be the highest temperature range within the drying system, but it can also be desirable to provide a lower temperature range in a holding zone. In terms of the second alternative of this embodiment, it can be assumed that the defined temperature range is at least higher than the temperature of at least one heating zone into which the exhaust air from the holding zone is to be routed.
  • the temperature loss of an exhaust air from the holding zone is very small compared to its inlet temperature, the temperature can still be sufficiently high that the exhaust air can be returned to the holding zone.
  • the drying air is increased to the required temperature by means of the holding zone heat exchanger and introduced into the holding zone by means of the first holding zone air conveying device.
  • the holding zone exhaust air device provided there discharges the air from the holding zone and is connected to a second holding zone air conveying device which at least partially feeds the exhaust air from the holding zone back to the holding zone.
  • This variant can also be used to advantage if the exhaust air from the holding zone can be reintroduced at the beginning or end of the holding zone, where a slightly lower temperature than in the rest of the holding zone is harmless in the immediate vicinity of the heating area or the cooling area.
  • the holding zone can also have a second holding zone exhaust air device, which supplies the exhaust air from the holding zone to its heat exchanger or to a thermal post-combustion unit.
  • the holding zone exhaust air device can be connected to any air conveying device of one of the heating zones present in the device for drying a workpiece and supply the holding zone exhaust air to this. This applies in particular to heating zones without their own heat exchanger.
  • the principle of the cascading supply of drying air can also be provided solely for the holding zone.
  • the invention also relates to a method in which a workpiece is moved through at least two heating zones, with a first heating zone providing a lower temperature range than a second heating zone, drying air being heated and introduced into the second heating zone, and the exhaust air from the second heating zone being used in the first heating zone is supplied.
  • the exhaust air from the warmer heating zone is thus fed to the cooler heating zone without being heated any further.
  • the method can be carried out with the device disclosed above.
  • the number of heat exchangers can be significantly reduced within a drying device, so that the space requirement and the costs for such a system decrease.
  • the energy requirement of the system is significantly reduced.
  • air conveying devices can be dimensioned smaller.
  • the thermal load on the workpiece can be lower if only small temperature differences occur in neighboring heating zones.
  • figure 1 shows schematically how a device 10 according to the invention for drying a workpiece, in particular a vehicle body after painting, can be configured.
  • the workpiece passes through the device 10 from left to right.
  • the device 10 is designed as a dryer tunnel with four heating zones 20, 30, 70.1 and 70.2, a holding zone 60, three cooling zones 76.1, 76.2, 76.3, an entry lock 50, an exit lock 74 and another lock 78.
  • the heating zones 70.1 and 70.2 are heating zones of the conventional type and are each connected to another heat exchanger 72.
  • the supply or the exchange of heated air in the heating zones 70.1 and 70.2 is illustrated by double arrows.
  • the inlet lock 50 and the outlet lock 74 are also supplied with heated supply air from heat exchangers 72 .
  • the first heat exchanger 72a in figure 1 shown on the far left, draws fresh air 56 which is then supplied to the entire system.
  • the dryer tunnel 10 is designed with a holding zone 60 and a device 54 for thermal post-combustion, so that the exhaust air from the holding zone 60 can be cleaned by thermal post-combustion.
  • the exhaust air from the device 54 for thermal post-combustion is guided along the heat exchanger 72 to the first heat exchanger 72a, in order to heat the fresh air 56 there and then to be discharged to the outside.
  • zone separations 52 are marked, which can also be provided between the remaining sections of the dryer tunnel 10 . They are intended to prevent excessive air and temperature equalization between the individual zones.
  • a cascade K is shown in each case in the area of the first and second heating zones 20, 30 and in the area of the holding zone 60. It can be seen here that the exhaust air from the cascade between the first and second heating zones 20, 30 is also fed to the air flow between the first heat exchanger 72a to the locks 50 and 74.
  • the configuration of the dryer tunnel 10 is to be understood merely as an example; it can have more heating or cooling zones or fewer, and heating zones can also optionally feed their exhaust air to the device 54 for thermal post-combustion. Intermediate holding zones can also be provided.
  • FIG 2 now shows a cascade K, namely a cascade between the first heating zone 20, the second heating zone 30 and a further heating zone 40 in simplified form. It can also be formed within the holding zone 60 in a similar manner, in particular with regard to the first and second heating zones 20, 30 in figure 2 shown. In this case, the zone separations 52 would be omitted.
  • process air and fresh air 56 are supplied to a heat exchanger 32, the heat from which can be provided, for example, by the device 54 for thermal post-combustion.
  • the heated drying air is then fed into the second heating zone 30 by the second air conveying device 34 .
  • Heat exchanger 32 and second air conveying device 34 are housed here in a common unit, which can also have its own internal fresh air supply 56 .
  • exhaust air 80 can be discharged from the unit or from the supply to the second heating zone 30 .
  • the heated dryer air is guided through a distribution device 90 with a separator 92, which causes the dryer air to be distributed in the second heating zone 30 as required.
  • the separator 92 prevents foreign bodies from getting into the second heating zone 30 on the workpiece to be dried.
  • An exhaust air device 36 of the second heating zone 30 then sucks off the dryer air.
  • the exhaust air device 36 is connected to the first air conveying device 22 of the first heating zone 20 so that the exhaust air from the second heating zone 30 can be guided into the first heating zone 20 in this way. This has a lower temperature requirement than the second heating zone 30.
  • the air is distributed in the heating zone 20 by means of a distribution device 90 with a separator 92.
  • the first heating zone 20 also has a first exhaust air device 24 which extracts the dryer air from the first heating zone 20 and partially feeds it to the heat exchanger 32 of the second heating zone 30 .
  • the other part is fed to the further heating zone 40, which has a lower temperature requirement than the first heating zone 20. It is guided by the additional air conveying device 42 into the additional heating zone 40 where it is distributed by a distribution device 90 together with a separator 92 .
  • the further heating zone 40 has a further exhaust air device 44 with which the dryer air can be drawn off from the further heating zone 40 . It is at least partially fed to the heat exchanger 32 .
  • Optional fresh air feeds 56 and possible starting points for exhaust air 80 are marked along the air ducts illustrated as arrows between the heating zones 20, 30, 40 and their components.
  • Zone separations 52 are provided between the heating zones 20, 30, which can be opened to allow the workpiece to be dried to pass through. There is also a minimal exchange of air between the zones, which is shown with horizontal double arrows. A fresh air supply 56 can optionally also be provided at the zone separations 52 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)
EP21203284.1A 2020-11-05 2021-10-18 Dispositif et procédé de séchage d'une pièce par fourniture de chaleur en cascade Pending EP4006470A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020213945.8A DE102020213945A1 (de) 2020-11-05 2020-11-05 Vorrichtung und Verfahren zum Trocknen eines Werkstücks mit kaskadierender Wärmezufuhr

Publications (2)

Publication Number Publication Date
EP4006470A2 true EP4006470A2 (fr) 2022-06-01
EP4006470A3 EP4006470A3 (fr) 2022-10-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21203284.1A Pending EP4006470A3 (fr) 2020-11-05 2021-10-18 Dispositif et procédé de séchage d'une pièce par fourniture de chaleur en cascade

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Country Link
EP (1) EP4006470A3 (fr)
CN (1) CN114433451A (fr)
DE (1) DE102020213945A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022113067A1 (de) * 2022-05-24 2023-11-30 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1198292B (de) 1962-02-17 1965-08-05 Berlin Lufttech Anlagen Verfahren und Vorrichtung zum Trocknen kolloidaler Schichten auf Bahnen
GB2123936B (en) * 1982-06-09 1985-10-30 Flakt Limited Paint curing apparatus
CN101703995B (zh) * 2008-10-24 2012-09-19 汕头市远东轻化装备有限公司 涂布复合机的烘干装置
US20100299956A1 (en) * 2009-05-29 2010-12-02 Recycled Energy Development, Llc Apparatus and Method for Drying Wallboard
DE102013004136A1 (de) * 2013-03-09 2014-09-11 Volkswagen Aktiengesellschaft Vorrichtung zum Trocknen eines Werkstücks und Verfahren zum Betrieb einer derartigen Vorrichtung
CN203610292U (zh) * 2013-11-27 2014-05-28 曲靖宏程工贸有限公司 一种涂布机烘箱系统
EP2924381A1 (fr) 2014-03-28 2015-09-30 Sabine Schindler Alimentation en air frais
DE102015017278B3 (de) * 2015-07-31 2019-04-04 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015017280B3 (de) 2015-07-31 2019-04-04 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
DE102015010717A1 (de) * 2015-08-17 2017-02-23 Eisenmann Se Filtereinsatztemperiereinrichtung, Vorrichtung zum Temperieren von Gegenständen sowie Verfahren hierfür
DE102015224916A1 (de) * 2015-12-10 2017-06-14 Dürr Systems Ag Behandlungsanlage und Verfahren zum Behandeln von Werkstücken
US20190041134A1 (en) * 2016-02-01 2019-02-07 Stela Laxhuber Gmbh Continuous flow dryer having at least two sections
CN205926241U (zh) * 2016-06-16 2017-02-08 珠海市椿田机械科技有限公司 一种表面烘干装置
JP6681853B2 (ja) * 2017-06-16 2020-04-15 株式会社大気社 塗装乾燥炉

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EP4006470A3 (fr) 2022-10-26
CN114433451A (zh) 2022-05-06
DE102020213945A1 (de) 2022-05-05

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