(19)
(11) EP 1 439 359 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.05.2007 Bulletin 2007/19

(43) Date of publication A2:
21.07.2004 Bulletin 2004/30

(21) Application number: 03445138.5

(22) Date of filing: 26.11.2003
(51) International Patent Classification (IPC): 
F26B 3/02(2006.01)
 F26B 21/06(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 20.01.2003 SE 0300140

(71) Applicant: WSAB OY FINLAND
SF-11710 Riihimäki (FI)

(72) Inventors:
  • Wamming, Thomas
    931 38 Skelleftea (SE)
  • Jokinen, Pentti
    184 34 Aakersberga (SE)
  • Brands, Guntis
    6992 Chino (CH)

(74) Representative: Wiedemann, Bernd W 
Gislavägen 1
294 93 Sölvesborg
294 93 Sölvesborg (SE)

   


(54) A method for heating wood


(57) The present invention relates to a method of heating timber to a predetermined temperature in a preheating phase of a timber drying process. The timber is placed in an at least substantially closed chamber in which there is sustained an atmosphere that contains aqueous steam and has a wet temperature and a dry temperature. The method includes raising the wet and the dry temperature of the atmosphere. The method is characterised by raising the dry temperature in keeping with a rise in the wet temperature.







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