EP0498961B1 - Dispositif de séchage du bois - Google Patents

Dispositif de séchage du bois Download PDF

Info

Publication number
EP0498961B1
EP0498961B1 EP91121843A EP91121843A EP0498961B1 EP 0498961 B1 EP0498961 B1 EP 0498961B1 EP 91121843 A EP91121843 A EP 91121843A EP 91121843 A EP91121843 A EP 91121843A EP 0498961 B1 EP0498961 B1 EP 0498961B1
Authority
EP
European Patent Office
Prior art keywords
air
drying
circulating
fans
wood
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.)
Expired - Lifetime
Application number
EP91121843A
Other languages
German (de)
English (en)
Other versions
EP0498961A1 (fr
Inventor
Josef Kronseder
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
Priority to AT91121843T priority Critical patent/ATE102336T1/de
Publication of EP0498961A1 publication Critical patent/EP0498961A1/fr
Application granted granted Critical
Publication of EP0498961B1 publication Critical patent/EP0498961B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F26B21/00—Arrangements for supplying or controlling air or other gases for drying solid materials or objects
    • F26B21/20—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
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • 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

Definitions

  • the invention relates to a device for drying wood or other goods, with an elongated, cylindrical outer housing and a front cover, an elongated cylindrical heating shield arranged coaxially inside the housing, which encloses the actual drying chamber and on the outside with the
  • the inner casing of the circulating air duct is limited, as well as with a vacuum device and an air circulation device on the end face opposite the sealing cover.
  • Such a device is known from DE-A-35 43 248.
  • the air warmed up by the heating shield is blown lengthways through the wood stacked in the drying room enclosed by the heating shield.
  • the wood has to be re-stacked from the storage location, since it is usually stored on continuous strips.
  • the object of the present invention is to redesign a device known for longitudinal ventilation with simple means in such a way that the introduced wood can be dried more quickly and more uniformly without the wood being stacked for a drying cycle got to.
  • the drying space is closed at the end toward the air circulation device with a partition wall covering the end of the heating shield, that the space between the heating shield and the outer housing is divided by radial partition walls into an upper, a lower and two lateral air circulation ducts and that Heating shield in the area of the side air circulation ducts, which are sealed off from the closure cover, has air slots for cross ventilation of the wood stacked in the drying space, and the drying air is returned from the loading end of the drying space to the air circulation device via the upper air circulation duct.
  • the heating shield has transverse slots on one side only in the front area of one side air circulation duct and on the other side only in the rear area of the opposite air circulation duct.
  • the recirculating air duct located below has an elongated cooling register and can be acted upon parallel to the lateral recirculating air ducts, so that part of the circulated air is always recooled and freed from the water vapor carried by falling below the dew point.
  • the air circulation device consists of a plurality of separately controllable fans.
  • a method for operating such a drying device has proven particularly expedient, in which, according to the invention, the air is circulated only by a part of the fans in the warm-up phase and by a larger number of fans in the dry phase with the generation of a vacuum.
  • the drying device has an outer cylindrical housing 1 with an end closure cover 2 as the loading opening and a closed end wall 3, on the inside of which an air circulation device 4 in the form of several fans is arranged.
  • An elongated cylindrical heating shield 5 is arranged inside the cylindrical insulated housing 1 and coaxially therewith, which consists of a double jacket with heating pipes in between and which is heated from the outside via a heating boiler.
  • the interior of this heating shield 5 forms the actual drying chamber 6, in which, as can be seen from FIG. 2, corresponding long timber 7 is stacked on a carriage 8 and is retracted via the opened closure cover 2.
  • the drying chamber 6 or the heating shield 5 is closed on its inner end face opposite the fans 4 with a closed end wall 9. Furthermore, the annular space enclosed by the outer jacket of the heating shield 5 and by the inner surface of the housing 1 - as can be seen in particular from the cross section according to FIG. 2 - is divided by radial partition walls 10, 11, 12, 13, so that an upper air circulation duct 14, two side air ducts 15 and 16 and a lower air duct 17 are formed.
  • the side air circulation ducts at the end of the heating shield 5 on the cover side are sealed off via corresponding transverse walls 18 and 19 from the front space 20 between the closure cover 2 and the end of the heating shield 5, while the actual drying space 6 and the upper and lower air circulation ducts 14 and 17 lead to the end space 20 are open.
  • the heating shield 5 has air slots 21 and 22 leading radially inwards in the area covered laterally by the air circulation ducts 15 and 16 for transverse ventilation of the wood stack 7. It is included for optimal airflow and swirling Of particular advantage if, for example, starting from the left air circulation duct 15, the air slots 21 are only provided in the front half of the heating shield 5 adjacent to the fans 4, while on the opposite side, starting from the air circulation duct 16, the air slots 22 are only provided in the rear half of the heating shield 5 are provided. This means that the cross-flowing air does not encounter a counterflow, but can extend over the entire width of the stack.
  • a vacuum pump 24 is also provided for generating a vacuum in the drying room 6.
  • cooling registers 25 are arranged in the lower air circulation duct 17 in order to cool back part of the moisture-laden air and, in doing so, to achieve a precipitation of the water vapor loading by falling below the dew point.
  • a part of the circulating air is conveyed by the fans 4 practically in a bypass through the lower circulating air duct 17 to the front space 20, this proportion of air sweeping along the cooling register 25, is cooled there and releases a large part of the absorbed moisture.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Molecular Biology (AREA)
  • Drying Of Solid Materials (AREA)

Claims (7)

  1. Installation de séchage du bois ou d'autres produits, comprenant une enveloppe (1) extérieure, oblongue, cylindrique et un couvercle (2) de fermeture du côté frontal, un bouclier (6) de chauffage qui entoure la chambre de séchage proprement dite et dont la face extérieure délimite, avec la surface latérale intérieure de l'enveloppe, des canaux de circulation de l'air, ainsi qu'un dispositif de mise sous vide et un dispositif (4) de recirculation de l'air sur le côté frontal opposé au couvercle (7) de fermeture, caractérisée en ce que la chambre de séchage (6) est fermée du côté frontal en direction du dispositif (4) de recirculation de l'air par une paroi frontale (6) recouvrant l'extrémité (5) du bouclier thermique, en ce que l'intervalle compris entre le bouclier thermique (5) et l'enveloppe (1) est subdivisé par des cloisons (10,11,12,13) radiales en un canal (14) supérieur, en un canal (17) inférieur et en deux canaux (15,16) latéraux de recirculation de l'air, et en ce que le bouclier thermique (5) comporte, dans la région des canaux (15,16) de recirculation de l'air fermés latéralement en direction du couvercle (2) de fermeture, des fentes (21,22) d'aération transversales du bois (7) empilé dans la chambre (6) de séchage, et l'air de séchage est recyclé de l'extrémité de chargement (20) de la chambre (6) de séchage au dispositif (4) de recirculation de l'air en passant par le canal (14) supérieur de recirculation de l'air.
  2. Dispositif de séchage suivant la revendication 1, caractérisé en ce que le bouclier (5) thermique comporte des fentes (21,22) transversales d'un côté que dans la partie avant de l'un des canaux (15) latéraux de recirculation de l'air, et de l'autre côté que dans la partie arrière du canal (16) opposé de recirculation de l'air.
  3. Dispositif de séchage suivant la revendication 2, caractérisé en ce que la surface de passage et le nombre des fentes (21,22) transversales sont réglables.
  4. Dispositif de séchage suivant la revendication 1, caractérisé en ce que le canal (17) inférieur de recirculation de l'air comporte un registre de refroidissement oblong et peut être alimenté parallèlement aux canaux (15,16) latéraux de recirculation de l'air.
  5. Dispositif de séchage suivant la revendication 1, caractérisé en ce que le dispositif (4) de recirculation de l'air est constitué de plusieurs ventilateurs pouvant être commandés indépendamment.
  6. Procédé pour faire fonctionner un dispositif de séchage suivant l'une des revendications 1 à 5, caractérisé en ce qu'il consiste à ne faire recirculer l'air dans la phase de chauffage que par une partie des ventilateurs, et dans la phase de séchage avec production d'un vide par un plus grand nombre de ventilateurs.
  7. Procédé suivant la revendication 6, caractérisé en ce que le passage de l'air peut passer d'un fonctionnement en aspiration à un fonctionnement en refoulement par inversion des ventilateurs.
EP91121843A 1991-02-15 1991-12-19 Dispositif de séchage du bois Expired - Lifetime EP0498961B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91121843T ATE102336T1 (de) 1991-02-15 1991-12-19 Vorrichtung zum trocknen von holz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4104768 1991-02-15
DE4104768A DE4104768C1 (fr) 1991-02-15 1991-02-15

Publications (2)

Publication Number Publication Date
EP0498961A1 EP0498961A1 (fr) 1992-08-19
EP0498961B1 true EP0498961B1 (fr) 1994-03-02

Family

ID=6425167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121843A Expired - Lifetime EP0498961B1 (fr) 1991-02-15 1991-12-19 Dispositif de séchage du bois

Country Status (3)

Country Link
EP (1) EP0498961B1 (fr)
AT (1) ATE102336T1 (fr)
DE (2) DE4104768C1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19543412A1 (de) * 1995-11-21 1997-05-22 Waldner Gmbh & Co Hermann Trockner, insbesondere für die chemische oder pharmazeutische Industrie

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR986549A (fr) * 1949-03-11 1951-08-01 Perfectionnements aux séchoirs à bois
IT1032926B (it) * 1975-05-19 1979-06-20 Pagnozzi Ernesto Guglielmo Procedimento a vuoto per essiccare legname massiccio particolarmente per essiccare legname delicato e o facilmente collassabile
IT1071276B (it) * 1976-05-12 1985-04-02 Pagnozzi Ernesto Guglielmo Perfezionamenti nei procedimenti e negli impianti di essiccazione del legname..particolarmente negli impianti che impiegano il vuoto
JPS53103261A (en) * 1977-02-19 1978-09-08 Kitagawa Iron Works Co Method of drying wooden products and apparatus therefor
ES8604347A1 (es) * 1984-10-18 1986-02-01 Aranguren Ind Sa Maquina para el secado de la madera.
DE3543248A1 (de) * 1985-12-06 1987-06-11 Josef Kronseder Vorrichtung zum trocknen von holz
FR2614682A1 (fr) * 1987-04-30 1988-11-04 Giuliani Lando Procede et dispositif de sechage d'un corps dans lequel une partie de l'humidite a extraire est retenue dans des cellules fermees
DE8812056U1 (de) * 1988-09-23 1989-01-19 Wolf Stahlbau Gmbh U. Co Kg, 8069 Geisenfeld Vorrichtung zum Trocknen von Hopfen in Hopfentrocknungsanlagen
DE9005827U1 (de) * 1990-05-22 1990-08-23 Kronseder, Josef, 8313 Vilsbiburg Vorrichtung zum Trocknen von Holz

Also Published As

Publication number Publication date
DE4104768C1 (fr) 1992-03-12
ATE102336T1 (de) 1994-03-15
DE59101105D1 (de) 1994-04-07
EP0498961A1 (fr) 1992-08-19

Similar Documents

Publication Publication Date Title
DE4208913C2 (de) Vorrichtung zum Trocknen von Schnittholz
DE3027900C2 (de) Luftgekühlter Wärmetauscher für Haushalt-Wäschetrockner
EP0167899B1 (fr) Dispositif de séchage, notamment pour le bois de charpente
DE4228699C2 (de) Vorrichtung zum chargenweisen Trocknen von Schnittholz
DE3543248C2 (fr)
DE3134506C2 (fr)
EP0592973B1 (fr) Dispositif de séchage du bois ou d'autres matériaux solides
EP0498961B1 (fr) Dispositif de séchage du bois
EP0141227B1 (fr) Séchoir vertical
EP4056940A1 (fr) Dispositif et procédé de séchage d'objets et/ou de matières, en particulier de bois
DE3013703A1 (de) Trockenverfahren mit energierueckgewinnung mittelsn waermepumpe
DE3900074C2 (de) Wäschetrockner
DE19743378A1 (de) Hordentrockner
DE1927839A1 (de) Trockenanlage fuer keramische,insbesondere grobkeramische Erzeugnisse
EP0082358B1 (fr) Séchoir à tambour
EP0437272A1 (fr) Séchoir vertical
EP0458219A1 (fr) Dispositif pour le séchage du bois
DE3714519A1 (de) Vortrocknungsofen fuer holz
DE69303990T2 (de) Energiesparender Wäschetrockner
DD207113A3 (de) Heissmuldenmangel, insbesondere mehrmuldenmangel
DE29611521U1 (de) Vorrichtung zum Trocknen von Holz
DE3710787A1 (de) Vorrichtung zur waermebehandlung von textilbahnen und dgl.
DE102024131491A1 (de) Trockner für eine textile Warenbahn
DE69510042T2 (de) Verfahren und vorrichtung zum trocknen von holz
DE3616411A1 (de) Verfahren und vorrichtung zur konvektiven trocknung und kuehlung rieselfaehiger schuettgueter

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

Kind code of ref document: A1

Designated state(s): AT CH DE FR IT LI

17P Request for examination filed

Effective date: 19920904

17Q First examination report despatched

Effective date: 19930426

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR IT LI

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19940302

REF Corresponds to:

Ref document number: 102336

Country of ref document: AT

Date of ref document: 19940315

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59101105

Country of ref document: DE

Date of ref document: 19940407

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19941231

Ref country code: LI

Effective date: 19941231

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19991217

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19991220

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20000105

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20001219

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20011002