WO2000050207A3 - Method and apparatus for drying and/or thermally treating wood - Google Patents

Method and apparatus for drying and/or thermally treating wood Download PDF

Info

Publication number
WO2000050207A3
WO2000050207A3 PCT/FI2000/000132 FI0000132W WO0050207A3 WO 2000050207 A3 WO2000050207 A3 WO 2000050207A3 FI 0000132 W FI0000132 W FI 0000132W WO 0050207 A3 WO0050207 A3 WO 0050207A3
Authority
WO
WIPO (PCT)
Prior art keywords
drying
wood
thermally treating
chamber
drying chamber
Prior art date
Application number
PCT/FI2000/000132
Other languages
French (fr)
Other versions
WO2000050207A2 (en
Inventor
Arvo Ilmavirta
Original Assignee
Lahden Ammattikorkeakoulu
Arvo Ilmavirta
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
Priority claimed from FI990376A external-priority patent/FI106743B/en
Application filed by Lahden Ammattikorkeakoulu, Arvo Ilmavirta filed Critical Lahden Ammattikorkeakoulu
Priority to AU28077/00A priority Critical patent/AU2807700A/en
Priority to EP00906391A priority patent/EP1163481A2/en
Publication of WO2000050207A2 publication Critical patent/WO2000050207A2/en
Publication of WO2000050207A3 publication Critical patent/WO2000050207A3/en

Links

Classifications

    • 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
    • F26B5/048—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 in combination with heat developed by electro-magnetic means, e.g. microwave energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • 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

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)

Abstract

The invention relates to a method and an apparatus for drying and/or thermally treating wood, wherein a batch of wood (2) to be processed is placed in a drying chamber (1) that is divided off from its surroundings, and energy is supplied to the chamber to dry the wood. In order to provide rapid drying, a negative pressure is generated in the drying chamber (1), and the energy used in the drying is supplied to the drying chamber (1) in the form of high frequency energy. When the moisture content has almost dropped to the final moisture level, the negative pressure is eliminated from the drying chamber (1), whereupon the final drying and/or thermal treatment are carried out by means of heat.
PCT/FI2000/000132 1999-02-22 2000-02-21 Method and apparatus for drying and/or thermally treating wood WO2000050207A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU28077/00A AU2807700A (en) 1999-02-22 2000-02-21 Method and apparatus for drying and/or thermally treating wood
EP00906391A EP1163481A2 (en) 1999-02-22 2000-02-21 Method and apparatus for drying and/or thermally treating wood

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FI990376A FI106743B (en) 1999-02-22 1999-02-22 Method for drying wood material
FI990376 1999-02-22
FI991443 1999-06-24
FI991443A FI110891B (en) 1999-02-22 1999-06-24 Method and apparatus for drying and / or heat treating wood materials

Publications (2)

Publication Number Publication Date
WO2000050207A2 WO2000050207A2 (en) 2000-08-31
WO2000050207A3 true WO2000050207A3 (en) 2000-12-28

Family

ID=26160707

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2000/000132 WO2000050207A2 (en) 1999-02-22 2000-02-21 Method and apparatus for drying and/or thermally treating wood

Country Status (4)

Country Link
EP (1) EP1163481A2 (en)
AU (1) AU2807700A (en)
FI (1) FI110891B (en)
WO (1) WO2000050207A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI20002085A0 (en) 2000-09-21 2000-09-21 Lahden Ammattikorkeakoulu Method and system for drying material
CN100344929C (en) * 2003-04-24 2007-10-24 中国林业科学研究院木材工业研究所 Method and equipment for releasing internal stress through drying wood

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986268A (en) * 1973-09-17 1976-10-19 Drywood Corporation Process and apparatus for seasoning wood
US4466198A (en) * 1983-03-07 1984-08-21 Doll Brendan L Apparatus and method for drying lumber
DE3928941A1 (en) * 1988-09-16 1990-03-22 Cremona Angelo & Figlio Wood veneer-drying system - uses hot air followed by dielectric high-frequency drying area
WO1996001971A1 (en) * 1994-07-12 1996-01-25 Nauchno-Proizvodstvenny Tsentr Informatsionnykh I Promyshlennykh Tekhnology Rossiyskoi Akademii Nauk Vacuum-dielectric drying chamber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986268A (en) * 1973-09-17 1976-10-19 Drywood Corporation Process and apparatus for seasoning wood
US4466198A (en) * 1983-03-07 1984-08-21 Doll Brendan L Apparatus and method for drying lumber
DE3928941A1 (en) * 1988-09-16 1990-03-22 Cremona Angelo & Figlio Wood veneer-drying system - uses hot air followed by dielectric high-frequency drying area
WO1996001971A1 (en) * 1994-07-12 1996-01-25 Nauchno-Proizvodstvenny Tsentr Informatsionnykh I Promyshlennykh Tekhnology Rossiyskoi Akademii Nauk Vacuum-dielectric drying chamber

Also Published As

Publication number Publication date
WO2000050207A2 (en) 2000-08-31
FI110891B (en) 2003-04-15
FI991443A (en) 2000-08-23
EP1163481A2 (en) 2001-12-19
AU2807700A (en) 2000-09-14
FI991443A0 (en) 1999-06-24

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