EP3765806A1 - Boîte à buses pour un dispositif de séchage servant à sécher des matériaux en forme de panneau - Google Patents

Boîte à buses pour un dispositif de séchage servant à sécher des matériaux en forme de panneau

Info

Publication number
EP3765806A1
EP3765806A1 EP19720360.7A EP19720360A EP3765806A1 EP 3765806 A1 EP3765806 A1 EP 3765806A1 EP 19720360 A EP19720360 A EP 19720360A EP 3765806 A1 EP3765806 A1 EP 3765806A1
Authority
EP
European Patent Office
Prior art keywords
drying
nozzle box
nozzle
air
plate
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
Application number
EP19720360.7A
Other languages
German (de)
English (en)
Other versions
EP3765806B1 (fr
Inventor
Christoph Straetmans
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.)
Grenzebach BSH GmbH
Original Assignee
Grenzebach BSH GmbH
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 Grenzebach BSH GmbH filed Critical Grenzebach BSH GmbH
Publication of EP3765806A1 publication Critical patent/EP3765806A1/fr
Application granted granted Critical
Publication of EP3765806B1 publication Critical patent/EP3765806B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
    • 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
    • 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
    • F26B15/122—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 material being carried by transversely moving rollers or rods which may rotate
    • 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
    • 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
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/283—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun in combination with convection

Definitions

  • the invention relates to a nozzle box, which is arranged in a drying device in the transverse direction to a drying device to be dried in the drying plate having a conical shape in at least one of the direction of flow of the drying air in the nozzle box and a nozzle-equipped, the plate facing the drying surface, wherein the drying air flows from a plurality of arranged in rows in the drying surface nozzles on the plate.
  • a drying device is used to dry plates, which can be guided in floors by a drying chamber covered by the drying device, wherein the plates are brought into the drying device by in a ceiling box generated and then introduced via a pressure chamber in the nozzle boxes drying air for drying in contact and the drying air after absorption of moisture from the plates via a suction chamber can be discharged.
  • the drying of plate-like materials such as gypsum boards is preferably carried out by a predominantly convective heat transfer in the form of the overflow of heated air.
  • the usually arranged over several floors plates are guided by means of conveyors such as roller conveyors or screen belts through the dryer.
  • drying systems are usually operated in recirculation mode.
  • the drying air is introduced several times to the plates and reheated after each contact. In this way, the air increasingly accumulates moisture, only a small portion of the drying air is discharged to the environment as exhaust air to dissipate moisture and fumes into the environment.
  • a distinguishing feature of various types of dryers is the type of air flow over the material to be dried.
  • the air can be fed to the plate essentially in the form of transverse ventilation, longitudinal ventilation, or so-called impingement jet ventilation.
  • the drying air In transverse ventilation, the drying air is passed from the side, transversely to the conveying direction of the plate-like material, over the material to be dried. As the drying air progressively cools as it travels across the drying stock, it results
  • the drying air is introduced from the side of the drying plant into nozzle boxes, also referred to as drying chambers, and blown through air outlet nozzles perpendicular to the surface of the material to be dried. From there, this air flows to the opposite side of the drying plant.
  • nozzle boxes also referred to as drying chambers
  • drying conditions can be adapted to the needs of the drying material.
  • the dryer is also, z. B. in product changes, excellent controllable.
  • Such a system is described in DE 19 46 696 A for drying plasterboard.
  • a dryer chamber is designed so that the highest possible heat input and the most uniform possible drying over the width of the material to be dried are guaranteed.
  • DE 26 13 512 A1 a drying plant is known in which a two-stage drying process is used.
  • the second drying stage is heated with the interposition of a heat exchanger from the exhaust air of the first dryer stage.
  • the panels are to be dried in the first dryer stage at high temperature and high humidity and in the second dryer stage at relatively low temperature and low humidity.
  • the first stage is here longitudinally ventilated, the second stage cross-ventilated.
  • a method for drying plates is known, which are guided in floors through a device divided into drying chambers device, wherein the plates are brought in a drying device by impact jet ventilation with the drying air in contact and the impingement jet ventilation by means of cross-ventilated nozzle boxes is guaranteed.
  • the drying apparatus is a main drying stage or a final drying stage in a drying plant.
  • a drying plant may have a plurality of drying zones operating on the principle of impingement jet ventilation, as known from DE 10 2005 017 187 B4.
  • An advantage of the inventively designed nozzle box proves a significant reduction of too heated zones of the plates in their side area.
  • a drying device equipped with nozzle boxes constructed according to the invention can be put into operation with less effort than conventional drying installations. The maintenance effort is reduced.
  • the air distribution over the a plurality of floors, each with juxtaposed nozzle boxes trained dryer room is improved. It causes a higher pressure loss at the nozzles; the circulating air of the drying air is reduced.
  • the device according to the invention makes it possible to gently dry plate-shaped materials with a lower expenditure of energy by means of impingement jet ventilation compared with the prior art.
  • the nozzles have a diameter of less than 10 mm, also a uniform drying is favored.
  • the speed of the drying air emerging from the nozzles is between 17 and 21 m / s.
  • the nozzles are arranged in three, extending in the longitudinal direction of the nozzle box rows.
  • the rows have a spacing of 55 mm to 80 mm.
  • the nozzle boxes are conical only in the vertical direction in space, or they are also conically constructed in a further, to the flow direction of the drying air in the nozzle boxes.
  • a radiation plate is additionally arranged on both its longitudinal sides of the nozzle rows in the direction of the plate to be dried. As a result, they improve the drying in the side area of the nozzle box, because they concentrate the radiant heat of the nozzle box in the direction of the gypsum board.
  • the distance of the nozzles to the plate is at least 22 mm and reaches a maximum value of 50 mm.
  • the invention also relates to a drying device for drying plates, which can be guided in floors by a drying space comprised by the drying device, wherein the plates in the drying device by in a ceiling box generated and then introduced via a pressure chamber in the nozzle boxes drying air for drying in contact can be brought and the drying air after absorption of moisture from the plates via a suction chamber can be discharged, wherein the drying device is characterized in that it comprises a plurality of nozzle box, which are constructed, as indicated above.
  • FIG. 1 shows a longitudinal section of a drying device with a pressure chamber, a drying room and a suction chamber
  • FIG. 2 is a side view of two nozzle boxes according to Figure 1, which are arranged one above the other between each to be dried plates,
  • Fig. 3 is a plan view of the one to be dried plate facing side of a biconical nozzle box and
  • Fig. 4 is an isometric view of a suction of the
  • a drying device (FIG. 1) of a cross-ventilated gypsum board cooler, drying air flows, the flow direction of which is indicated by arrows.
  • Preheated fresh air is fed to a burner 1 as combustion air 2.
  • the pressure chamber 5 is used to evenly distribute the air in the individual floors of a drying room 6.
  • the air is first pressed into the nozzle boxes 7, from which they over Hole nozzles, which are arranged on the top or bottom of the nozzle boxes, perpendicular to Plasterboard 8 or other, to be dried plates is blown.
  • the plates 8 rest on support rollers and are conveyed perpendicularly to the viewing plane of FIG. 1 by means of a transport device (not explained here in more detail).
  • the support rollers are arranged between and slightly above the nozzle boxes 7, so that the drying air flows between the support rollers on the plates 8.
  • the width of the pressure chamber 5 in relation to the width of the suction chamber 9 is greater.
  • baffles 12, 13, 14 and 15 may be provided;
  • an air rectifier 16 is also available.
  • FIG. 2 Two nozzle boxes 7 (FIG. 2) are each arranged between two plates 7 to be dried. At the suction chamber 9 side facing they are spaced apart by an element 17 serving for fastening.
  • Fig. 3 shows a biconical nozzle box 7 ', which, in contrast to the nozzle boxes 7, also in the plane provided with nozzles 18, from which the air flows to the plate 8 to be dried, also tapers to the side of the suction chamber 9.
  • each nozzle box 7 On each of a plate 8 side facing each nozzle box 7 is provided with arranged in three rows of nozzles 18, from which the drying air flows to the respective plate 8.
  • the nozzle boxes 7 above or below a strike plate 19 have a slot 20 through which contaminants can be removed from the nozzle box 7.
  • radiation plates 21 are arranged on each longitudinal side of the surface of the nozzle boxes 7, which faces the plate 8 to be dried.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Textile Engineering (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

L'invention concerne une boîte à buses (7, 7') disposée dans un dispositif de séchage dans la direction transversale par rapport à un panneau (8) à sécher dans le dispositif de séchage au moyen d'un air de séchage. Le boîtier à buses (7, 7') présente, au moins dans une direction perpendiculaire par rapport à la direction d'écoulement de l'air de séchage dans le boîtier à buses (7, 7'), une forme conique et une surface de séchage pourvue de buses (18) et tournée vers le panneau (8). L'air de séchage provenant d'une pluralité de buses (18) disposées en rangées dans la surface de séchage s'écoule sur le panneau (8). Le boîtier à buses (7, 7') est caractérisé en ce que le rapport de la somme des ouvertures des buses (18) par mètre carré par rapport à la surface de séchage est inférieur à 1,1 %.
EP19720360.7A 2018-03-15 2019-03-15 Boîte à buses pour un dispositif de séchage servant à sécher des matériaux en forme de panneau Active EP3765806B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018002073.9A DE102018002073A1 (de) 2018-03-15 2018-03-15 Düsenkasten für eine Trocknungsvorrichtung zum Trocknen von Gipsplatten
PCT/EP2019/000079 WO2019174784A1 (fr) 2018-03-15 2019-03-15 Boîte à buses pour un dispositif de séchage servant à sécher des matériaux en forme de panneau

Publications (2)

Publication Number Publication Date
EP3765806A1 true EP3765806A1 (fr) 2021-01-20
EP3765806B1 EP3765806B1 (fr) 2023-01-11

Family

ID=66334340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19720360.7A Active EP3765806B1 (fr) 2018-03-15 2019-03-15 Boîte à buses pour un dispositif de séchage servant à sécher des matériaux en forme de panneau

Country Status (11)

Country Link
US (1) US20210018265A1 (fr)
EP (1) EP3765806B1 (fr)
JP (1) JP7102655B2 (fr)
KR (1) KR20200130727A (fr)
CN (1) CN111886467A (fr)
BR (1) BR112020018342A2 (fr)
CA (1) CA3093483A1 (fr)
DE (1) DE102018002073A1 (fr)
EA (1) EA202092140A1 (fr)
ES (1) ES2939250T3 (fr)
WO (1) WO2019174784A1 (fr)

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1206718B (de) * 1959-04-22 1965-12-09 Beloit Iron Works Trockenvorrichtung fuer Faserstoffbahnen
US3529357A (en) * 1968-09-20 1970-09-22 Moore Dry Kiln Co Method and apparatus for high-speed drying of gypsum board
US3739490A (en) * 1971-06-01 1973-06-19 Weyerhaeuser Co Orifice pattern for jet dryers
DE2447779A1 (de) * 1973-10-10 1975-04-17 Beloit Corp Luftdruckaufprallvorrichtung zum trocknen einer papierbahn
US3936953A (en) * 1973-10-10 1976-02-10 Beloit Corporation Air impingement system
US3964656A (en) * 1975-04-14 1976-06-22 Tec Systems, Inc. Air bar assembly for web handling apparatus
DE2613512A1 (de) 1976-03-30 1977-10-06 Buettner Schilde Haas Ag Zweistufiges trocknungsverfahren und trocknungsanlage
US4428128A (en) * 1982-02-04 1984-01-31 The Coe Manufacturing Company Jet tube dryer retainer system
JPS62167161A (ja) * 1986-01-21 1987-07-23 Fuji Photo Film Co Ltd 空気吹出箱
JPH03291489A (ja) * 1990-04-09 1991-12-20 Hirano Tecseed Co Ltd 熱風乾燥装置
DE19701426C2 (de) * 1997-01-17 2002-07-11 Babcock Bsh Gmbh Trockner für band- oder plattenförmiges Gut
DE29701755U1 (de) * 1997-02-01 1997-04-17 Babcock Bsh Gmbh Vorrichtung zum Wärmebehandeln von durchlaufenden platten- oder bandförmigen Gütern
DE19837048C2 (de) * 1998-08-17 2000-11-30 Babcock Bsh Gmbh Düsenkasten für Durchlauftrockner, insbesondere für Furniertrockner
DE19922165C2 (de) * 1999-05-12 2001-08-30 Babcock Bsh Gmbh Trockner für band- oder plattenförmiges Gut
DE10146179C1 (de) * 2001-09-19 2002-10-31 Babcock Bsh Gmbh Anlage zum Trocknen von Gipskartonplatten
WO2004101238A2 (fr) * 2003-05-12 2004-11-25 Coe Manufacturing Company Secheur de plaquage
DE102005017187B4 (de) * 2005-04-13 2007-06-21 Lindauer Dornier Gmbh Durchlauftrockner in Mehretagenbauweise, insbesondere für plattenförmige Produkte
DE102009059822B4 (de) * 2009-12-21 2015-12-10 Grenzebach Bsh Gmbh Verfahren und Vorrichtung zum Trocknen von Gipsplatten
DE212013000118U1 (de) * 2012-05-15 2015-01-30 Andritz Technology And Asset Management Gmbh Zellstofftrockner mit Blaskästen zum Trocknen einer Zellstoffbahn
FI127350B (en) * 2015-09-07 2018-04-13 Raute Oyj Nozzle box and dryer using the same
KR101796489B1 (ko) * 2015-10-21 2017-11-10 재단법인 한국섬유기계융합연구원 고속 dtp 설비의 건조기용 열풍 건조노즐

Also Published As

Publication number Publication date
JP2021519909A (ja) 2021-08-12
CN111886467A (zh) 2020-11-03
KR20200130727A (ko) 2020-11-19
BR112020018342A2 (pt) 2020-12-29
DE102018002073A1 (de) 2019-09-19
WO2019174784A1 (fr) 2019-09-19
ES2939250T3 (es) 2023-04-20
US20210018265A1 (en) 2021-01-21
EP3765806B1 (fr) 2023-01-11
EA202092140A1 (ru) 2021-03-04
JP7102655B2 (ja) 2022-07-20
CA3093483A1 (fr) 2019-09-19

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