[go: up one dir, main page]

EP1319915A2 - Procédé de séchage de bois empilé - Google Patents

Procédé de séchage de bois empilé Download PDF

Info

Publication number
EP1319915A2
EP1319915A2 EP02450255A EP02450255A EP1319915A2 EP 1319915 A2 EP1319915 A2 EP 1319915A2 EP 02450255 A EP02450255 A EP 02450255A EP 02450255 A EP02450255 A EP 02450255A EP 1319915 A2 EP1319915 A2 EP 1319915A2
Authority
EP
European Patent Office
Prior art keywords
wood
drying
zone
drying gas
zones
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.)
Withdrawn
Application number
EP02450255A
Other languages
German (de)
English (en)
Other versions
EP1319915A3 (fr
Inventor
Kurt Ing. Mühlböck
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1319915A2 publication Critical patent/EP1319915A2/fr
Publication of EP1319915A3 publication Critical patent/EP1319915A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
    • F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
    • 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
    • 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
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • 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
    • F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
    • 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
    • F26B2210/16—Wood, e.g. lumber, timber

Definitions

  • the invention relates to a method for drying stacked Wood with the help of a drying gas in a circulating flow, the stacks of wood depending on the average Wood moisture in the respective zone with regard to its drying performance different partial flows of the drying gas be and on a device for performing the method.
  • Lumber is used to a large extent in wood drying plants a desired final moisture is dried, whereby the goal is always after The drying process is as uniform as possible Get wood cargo.
  • a load of timber is cut into introduced a treatment room and then at given Drying temperatures and dried at high humidity. Internally
  • the treatment room is equipped with fans for a circulating air flow for a heated one Drying gas generated by the lumber.
  • To ensure an even Temperature distribution in the treatment room may be necessary outside air introduced into the treatment room as evenly as possible distributed across the treatment room cross-section, which moreover a necessary prerequisite for an even distribution of air humidity within the chamber is.
  • each zone has its own temperature sensors and has its own actuators for associated heating registers or Heating register groups over which the temperature of the drying gas each Zone is regulated.
  • the heating register temperature is usually regulated such that the circulated in the treatment room and from the stack emerging drying gas is kept at a constant temperature, which leads to an equalization of the transferred heat output comes between the individual zones.
  • the evaporation of the wood Moisture in each zone corresponds to the amount of air circulated inversely proportional drop in temperature. With this type of scheme but it can happen that the inlet temperature is a permissible Temperature exceeds the limit, causing damage to the wood (Cracking or the like.) Comes.
  • Known devices for drying stacked lumber in a drying gas include under among others a drying chamber, fans for drying gas circulation and Heating registers for drying gas heating. To exchange the drying gas in the drying chamber, this is with an inlet and outlet for each Provide drying gas, with valves for regulation in the supply and discharge lines the exchange channels are provided.
  • These known devices However, they only have one zone, so that they are hardly even with them Wood moisture can be achieved after a drying process if the Load the treatment room with batches of wood of different moisture becomes.
  • the invention is therefore based on the object of a method of trained in such a way that extensive moisture compensation can be ensured in comparatively short periods of time, and while maintaining a predetermined final moisture.
  • a Device are created with which it is possible to make different woods Stack initial moisture into a treatment room without pre-sorting and still achieve an even average final moisture content of the wood load.
  • the invention solves this problem in that the wood stack in the Zone with the highest average wood moisture with a permissible greatest speed up to the fiber saturation point and the other zones in the sense of reaching the fiber saturation point in the wetest Zone predetermined period of time at different speeds be dried before the wood piles in a uniform circulation flow be dried to the specified final moisture and that for determination the average humidity used for the drying rates of the wood in a heating phase from the amount of heat supplied to the wood is determined.
  • the average humidity of the wood in a heating phase from the amount of heat supplied to the wood determined.
  • This amount of heat is known from the Darr mass (wood at 0% moisture) and the water contained in the wood supplied amount of heat together. With knowledge of the treatment room amount of wood introduced and the amount of heat supplied to the wood the moisture content of the wood can be determined.
  • the average moisture content of the wood is in zones during the heating phase of the circulating drying gas from the the amount of heat supplied to the wood during an observation period becomes.
  • the amount of heat supplied to the wood is determined, for example from the product of the temperature difference between stack entry and stack exit of the drying gas with the mass of the circulated Drying gas and a constant of the drying gas. It must thus only the temperature difference between the stack inlet and stack outlet with at least one temperature sensor each, with which a less complex, precise method for determining the supplied Amount of heat results.
  • the amount of heat supplied to the wood is even more precise To determine the drying gas from a heat exchanger amount of heat emitted and supplied to the wood from the product the temperature difference between the flow temperature and the return temperature of the heat exchanger with the mass of per unit time in the heat exchanger circulated heating medium and a material constant of the heating medium determined. To calculate the amount of heat supplied to the wood, either one way or the other are used.
  • the wood temperature or the stack exit temperature of the drying gas during the heating phase at least measured at one location per zone and fed to a storage unit become.
  • the mass of the water contained in the wood can then be determined from the during the observation period the amount of heat supplied to the wood and the Wood temperature difference and / or the drying gas temperature difference between Start and end of observation time with knowledge of the one to be dried Determine wood volume. Is a particularly precise determination of the wood moisture required, the temperature of the drying gas at stack entry and Stack exit, the temperature difference between flow temperature and return temperature of the heat exchanger and the wood temperature difference between a start of observation time and end of observation time for calculation the amount of heat supplied to the wood is taken into account.
  • the new method it is possible without additional wood moisture measuring points the initial moisture distribution between the individual zones to determine a treatment room.
  • the initial moisture content leaves according to the new procedure from the during the heating phase Wood supplied amount of heat and the associated temperature change of the Determine wood. It is essential for the method according to the invention that for an exact end result of the drying process not the determination an exact absolute moisture content of the wood in the individual zones is decisive, but only the relative differences between the individual zones must be determined.
  • An additional advantage is that the Determination of the differences between the individual zones in the maximum state Temperature differences between stack entry and exit occurs, which the best possible measurement accuracy is given. According to the invention after the end of the heating phase, the drying is started and the Drying process according to the humidest zone after one of the Operator selected drying schedule.
  • the assigned heating devices preferably in all zones the assigned heating devices to a predetermined Controlled stack outlet temperature of the drying gas.
  • the amount of steam emitted as quickly and easily as possible to be able to remove from the zone or the treatment room or to To be able to maintain the specified drying speed is according to the Invention proposed that each zone to be observed during the dry phase Drying speed over that replaced by a fresh gas Amount of drying gas is controlled.
  • each zone to be observed during the dry phase Drying speed over that replaced by a fresh gas Amount of drying gas is controlled.
  • each zone Differences in drying gas corresponding to initial moisture differences replaced.
  • the stack outlet temperature of the Drying gas in all zones either regulated to a uniform value, or else there is the same amount in each zone per time unit Drying gas exchanged and the stack outlet temperature of the Drying gas in all zones depending on the amount of steam to be removed controlled.
  • Devices for drying stacked wood in a dry gas have, for example, one in at least two zones for wood absorption divided treatment room and a control unit, which Drying gas per zone from at least one fan over at least a heat exchanger and a temperature sensor is circulated.
  • a control unit which Drying gas per zone from at least one fan over at least a heat exchanger and a temperature sensor is circulated.
  • the wood piles of a zone with the largest average Wood moisture at a maximum speed up to the fiber saturation point and the other zones in the same period with accordingly be dried at a lower speed to the fiber saturation point per zone is at least one inlet and one outlet for exchange provided by drying gas.
  • the in and out lines can the Exchange of air enriched with steam can be done easily without neighboring Zones.
  • the amount of drying gas exchanged To be able to regulate is a control valve in the inlet and / or outlet and / or a blower arranged.
  • the control of the valves or the output the blower takes place in such a way that, depending on the measured values of an air humidity measuring device a certain basic position is specified.
  • This Home position can be valid for all valves or fans in a zone and is overlaid with correction values determined from the initial moisture dries, for example, a zone with a low initial moisture level by exactly that slower amount that is necessary to reach the fiber saturation point at the same time how to reach the zone with a damp wood.
  • the exchanged Air volume in the individual zones exactly in relation to the respective one required drying performance are due to physical reasons in all Zones contain almost the same absolute drying gas moisture content. In order to is a single sensor for recording the absolute air humidity per treatment room sufficient.
  • drying rate also varies in this way be that the heating power via the detour one targeted at one different specified value for the outlet temperature of the air is varied. This takes advantage of the fact that given conditions and fresh gas exchange rates the speeds in each zone in mathematical formulated way of the difference of the outlet temperatures depend, with falling outlet temperatures at falling drying rates to lead.
  • the individual zones in sub-zones subdivided, for which subzones separate drying gas channels are arranged are.
  • the sub-zones are assigned, separated from each other controllable or regulatable heating register provided, which the Drying speeds in the individual sub-zones over the Regulate the drying gas temperature.
  • the middle, zone by zone, the wood or The amount of heat supplied to wood stacks is determined in a heating phase A.
  • the the amount of heat supplied to the wood can either be from the over a period of time determined temperature difference of the drying gas between stacking and exit or, for example, from measured differences in Flow and return temperatures of individual heating lines can be determined.
  • drying is started after the end of heating phase A and the drying process is carried out according to the wettest zone and the drying schedule chosen by the operator.
  • the exit temperature T from a stack of wood is regulated to the same setpoint in all zones, so that the drying rate is directly proportional to the amount of drying gas exchanged per zone. If air is used as the drying gas, only air enriched with steam has to be removed from the zone and fresh outside air has to be supplied to the zone.
  • the wood stacks in that zone with the highest average wood moisture are dried at a permissible maximum speed U1 up to the fiber saturation point F of the wood H1 and the other zones in the sense of reaching the fiber saturation point F in the drying interval t 1 specified by the wettest zone at a different speed U2 , before the wood stacks are dried in a uniform circulation flow to a predetermined final humidity E.
  • the wood H1 stored in zone 1 has an average initial moisture of 130% and the wood H2 stored in zone 2 has an average initial moisture of 100%.
  • the woods H1 and H2 of the two zones are dried down to the fiber saturation point F in the same drying interval t 1 , that is to say to about 30% moisture.
  • wood H1 must be dried faster than wood H2.
  • the procedure is basically on all drying goods and types of wood universal without knowledge of special material data and drying properties applicable. It is possible compared to the known plants Drying time, energy and additional effort, such as set-up time or the like, to save, since no drying time extensions to compensate for the uneven Moisture distribution or even post-drying are necessary, which makes the Efficiency of a drying system increases. But not just the uniformity of the drying result increases, but it also increases the Danger of under-drying and thus of cracking and deformation from which the committee is reduced. By the same dwell time of the Wood with the same drying conditions above and under fiber saturation the color result of the batch becomes more uniform.
  • the drying will be the same Temperature and with the same drying gas exchange per zone continued, to dry to the specified final moisture.
  • the device for drying stacked wood 1 consists of a treatment room 3 divided into several zones 2 and a control unit 4.
  • a drying gas preferably air of at least one fan 5 per zone 2 across heat exchanger 6 across Recirculated in the longitudinal direction of the treatment room 3.
  • the drying gas will promoted in the direction of arrow 7 by the fan 5 and there are several temperature sensors 8 arranged at the stack outlet, which temperature sensors 8 measure the stack outlet temperature of the drying gas.
  • a temperature sensor 8 per zone would suffice, but it has proven to be advantageous proven to provide multiple temperature sensors 8 and a middle one Determine outlet temperature.
  • the conveying direction of the fan 5 during the drying process be reversed several times.
  • each zone 2 at least one inlet and one outlet 10 for the exchange of Assigned drying gas.
  • a control valve 11 In the inlet and the outlet 10 is a control valve 11 and possibly a fan is provided with which the amount of the exchanged Drying gas can be adjusted.
  • the control valves 11, the Heat exchanger 6 and fans 5 are connected to the control unit via lines 12 connected.
  • the fan 5 or the fans 5 and the one or more heat exchangers 6 form a heating device for each zone 2 for the drying gas from the heaters of other zones 2 and at least partly by means of a false ceiling 14 from the treatment room 3 is separated to the flow behavior of the drying gas in the treatment room 3 to improve and influence each other To prevent drying gas from the individual zones 2.
  • the treatment room 3 has separation devices 15 in the form of Curtains or blinds or the like.
  • each sub-zone 16 is additionally arranged its own drying gas channels 17.
  • the individual sub-zones 16 are separately controllable or controllable heat exchanger 6 assigned to the individual sub-zones 16 to be able to regulate the supplied heating power separately.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
EP02450255A 2001-12-10 2002-11-06 Procédé de séchage de bois empilé Withdrawn EP1319915A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT19312001 2001-12-10
AT0193101A AT412741B (de) 2001-12-10 2001-12-10 Verfahren zum trocknen von gestapeltem holz

Publications (2)

Publication Number Publication Date
EP1319915A2 true EP1319915A2 (fr) 2003-06-18
EP1319915A3 EP1319915A3 (fr) 2006-08-02

Family

ID=3689355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02450255A Withdrawn EP1319915A3 (fr) 2001-12-10 2002-11-06 Procédé de séchage de bois empilé

Country Status (4)

Country Link
US (1) US6729043B2 (fr)
EP (1) EP1319915A3 (fr)
AT (1) AT412741B (fr)
CA (1) CA2413414C (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008061264A3 (fr) * 2006-11-21 2008-09-18 Kurt Muehlboeck Procédé de séchage de bois assemblé sous forme de piles
FR2919921A1 (fr) * 2007-08-06 2009-02-13 Groupe Solu Allience Sarl Dispositif pour le pre-sechage artificiel des bois
EP1748268A3 (fr) * 2005-07-29 2011-11-02 Josef Walderdorff Procédé de séchage de produits

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI118139B (fi) * 2005-02-22 2007-07-13 Valtion Teknillinen Menetelmä massiivipuuta käsittävän puukappaleen käsittelemiseksi
CA2502252A1 (fr) * 2005-03-24 2006-09-24 9051-8127 Quebec Inc. Stabilisateur d'empilages de bois
US7963048B2 (en) * 2005-05-23 2011-06-21 Pollard Levi A Dual path kiln
US7925975B2 (en) * 2006-03-10 2011-04-12 Microsoft Corporation Searching for commands to execute in applications
AT503026B1 (de) * 2006-04-12 2007-07-15 Muehlboeck Kurt Verfahren zum trocknen von in stapeln zusammengefasstem holz
US8201501B2 (en) 2009-09-04 2012-06-19 Tinsley Douglas M Dual path kiln improvement
RU2591372C2 (ru) * 2014-02-07 2016-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Братский государственный университет" Установка конвективной сушки
DE102015110750B4 (de) * 2014-07-07 2021-12-09 Hildebrand Holztechnik Gmbh Trocknungsvorrichtung
EP3190370A1 (fr) * 2016-01-05 2017-07-12 Hildebrand Holztechnik GmbH Dispositif de séchage
US10619921B2 (en) 2018-01-29 2020-04-14 Norev Dpk, Llc Dual path kiln and method of operating a dual path kiln to continuously dry lumber
CN115854680A (zh) * 2022-07-27 2023-03-28 格莱德(福建)生物科技有限公司 一种饲料生产过程中的恒温控制方法、设备及存储介质

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3738806A1 (de) 1987-11-15 1989-05-24 Lignomat Gmbh Trockenkammer zur behandlung von schnittholz
DE19522028A1 (de) 1995-06-17 1996-12-19 Brunner Reinhard Verfahren und eine Vorrichtung zum Trocknen von Schnittholz bei Unterdruck
DE29723003U1 (de) 1997-12-31 1998-05-20 Mühlböck, Kurt, Ing., Eberschwang Vorrichtung zum Trocknen von gestapeltem Schnittholz

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE521005C (de) * 1931-03-18 Fritz Haas Trockenanlage fuer Holz
DE962870C (de) * 1951-12-21 1957-04-25 Siemens Ag Verfahren und Einrichtung zur Behandlung von feuchtem Gut, insbesondere von Tabak- oder Teeblaettern
DE1294888B (de) * 1961-10-25 1969-05-08 Ewemaskiner Ab Verfahren und Vorrichtung zum Trocknen von Holz
SE319431B (fr) * 1966-11-14 1970-01-12 Svenska Flaektfabriken Ab
USRE28226E (en) * 1970-05-18 1974-11-05 Circulating air dryer
AT335918B (de) * 1974-07-11 1977-04-12 Vanicek Viktor Trocknungsanlage, insbesondere trocknungskanal
US4955146A (en) * 1988-09-01 1990-09-11 Boldesigns, Inc. Lumber drying kiln
US5197201A (en) * 1988-09-27 1993-03-30 Ekono Oy Process for drying timber
US5107607A (en) * 1990-01-22 1992-04-28 Mason Howard C Kiln for drying lumber
US5179789A (en) * 1990-08-01 1993-01-19 The Coe Manufacturing Company (Canada), Inc. Kiln with automatic control of heat distribution
US5416985A (en) * 1993-09-23 1995-05-23 Culp; George Center bridging panel for drying green lumber in a kiln chamber
SE510228C2 (sv) * 1997-08-14 1999-05-03 Sunds Defibrator Ind Ab Tvåstegsförfarande för torkning av träråvara
US5983521A (en) * 1997-10-10 1999-11-16 Beloit Technologies, Inc. Process for splitting recycled combustion gases in a drying system
US7257589B1 (en) * 1997-12-22 2007-08-14 Ricoh Company, Ltd. Techniques for targeting information to users
WO2000011421A1 (fr) * 1998-08-20 2000-03-02 Wee Hou Lim Chambre de sechage de bois d'oeuvre
US20020143562A1 (en) * 2001-04-02 2002-10-03 David Lawrence Automated legal action risk management

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3738806A1 (de) 1987-11-15 1989-05-24 Lignomat Gmbh Trockenkammer zur behandlung von schnittholz
DE19522028A1 (de) 1995-06-17 1996-12-19 Brunner Reinhard Verfahren und eine Vorrichtung zum Trocknen von Schnittholz bei Unterdruck
DE29723003U1 (de) 1997-12-31 1998-05-20 Mühlböck, Kurt, Ing., Eberschwang Vorrichtung zum Trocknen von gestapeltem Schnittholz

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1748268A3 (fr) * 2005-07-29 2011-11-02 Josef Walderdorff Procédé de séchage de produits
WO2008061264A3 (fr) * 2006-11-21 2008-09-18 Kurt Muehlboeck Procédé de séchage de bois assemblé sous forme de piles
FR2919921A1 (fr) * 2007-08-06 2009-02-13 Groupe Solu Allience Sarl Dispositif pour le pre-sechage artificiel des bois

Also Published As

Publication number Publication date
CA2413414A1 (fr) 2003-06-10
AT412741B (de) 2005-06-27
US6729043B2 (en) 2004-05-04
ATA19312001A (de) 2004-11-15
EP1319915A3 (fr) 2006-08-02
CA2413414C (fr) 2009-08-11
US20030106238A1 (en) 2003-06-12

Similar Documents

Publication Publication Date Title
DE2721965C2 (de) Verfahren zur Überwachung und Steuerung der Trocknung von Furnierblättern im Durchlaufverfahren
EP0834048B1 (fr) Procede et dispositif pour le sechage de bois debite avec une pression reduite
DE3446642C3 (de) Verfahren und Vorrichtung zum Behandeln von Tabakblättern
AT412741B (de) Verfahren zum trocknen von gestapeltem holz
DE69616076T2 (de) Verfahren zur holztrocknung
DE2806747C2 (de) Verfahren und Vorrichtung zum Trocknen eines feuchtigkeitsaufnehmenden Materials
EP1167908B1 (fr) Procédé et dispositif de séchage non-thermique d'objets peints fraíchement avec une peinture à base d'eau, notamment de carrosseries automobiles
DE4325915A1 (de) Verfahren zum Messen einer Feuchte einer Warenbahn an einem Durchströmungstrockner und Vorrichtung zur Durchführung des Verfahrens
DE19937901A1 (de) Trockner für eine Lackieranlage
DE60116563T2 (de) Verfahren und vorrichtung zum trocknen einer zellstoffbahn mit heissluft unterschiedlicher temperatur
DE2019369B2 (de) Verfahren zum Trocknen von Tabak und Trocknungsförderer
DE2902369A1 (de) Einrichtung zum entfeuchten und temperieren der in einer trocknungskammer fuer die holztrocknung bewegten kammerluft
DE68924974T2 (de) Verfahren zum trocknen von holz.
DE4204771B4 (de) Verfahren und Anordnung zum Betrieb eines dampfbeheizten Trockners
DE69603391T2 (de) Trockner für Tonwaren
EP2092258B1 (fr) Procédé de séchage de bois assemblé sous forme de piles
DE973047C (de) Verfahren und Vorrichtung zum Trocknen durchlaufenden Gutes, insbesondere von Gewebebahnen, mittels wesentlich kreisender Heissluft
DE873519C (de) Verfahren und Vorrichtung zum automatischen Steuern eines Trockners
DE2631485C3 (de) Vorrichtung zur Klimatisierung von Raumluft
EP2010849B1 (fr) Dispositif de cuisson d'une couche d'émail et procédé permettant la régulation de la chaleur
EP2181298B1 (fr) Procédé, four de séchage d'une bande de matériau avec de l'air chaud et utilisation du dispositif
EP4305231B1 (fr) Sèche-linge à condenseur ayant une pompe à chaleur et une partie d'air recyclé, et procédé pour faire fonctionner le sèche-linge à condenseur
EP0285762A2 (fr) Installation et procédé de séchage, éventuellement mûrissage d'aliments
DE926000C (de) Verfahren und Vorrichtung zum Steuern eines Trockenvorganges
DE102022210969B4 (de) Verfahren und Vorrichtung zur Steuerung einer Kühlung von oberflächenbeschichteten Gütern in einer Kühlzone einer Trocknungsanlage

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20070118

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

17Q First examination report despatched

Effective date: 20090720

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20110601