B - Operations – Transporting – 27 – M
Patent
B - Operations, Transporting
27
M
B27M 1/02 (2006.01) B27K 3/10 (2006.01)
Patent
CA 2215988
A device for pressure treatment of wood elements comprises a pressure chamber (1) for accommodating the wood elements (5a, 5b, 5c) which are to be treated. The pressure chamber also accommodates a pressure medium which surrounds the wood elements on more than one side and, at least before the pressurization, a secondary medium in the form of a fluid. When the pressure medium is pressurized, the wood elements are subjected to a multilateral pressure, whereby they are permanently compressed. Further, the pressure chamber is provided with means (11a, 11b) for controlling the quantity of secondary medium which penetrates into the wood during the treatment. These means may consist of evacuating valves (11a) or of casings (11b) which surround the wood elements and which are impenetrable to the secondary medium.
La présente invention concerne un dispositif de traitement de pièces bois par pression, lequel dispositif comporte une chambre de pression (1) recevant les pièces de bois (5a, 5b, 5c) à traiter. La chambre de pression renferme également d'une part un milieu de pression enveloppant les pièces de bois sur plusieurs de leurs faces, et d'autre part, au moins avant la mise sous pression, un milieu secondaire à l'état de fluide. Une fois que le milieu de pression est mis sous pression, les pièces de bois subissent une pression multilatérale, ce qui fait qu'elles sont en permanence comprimées. En outre, la chambre de pression est équipée d'organes (11a, 11b) permettant de réguler la quantité de milieu secondaire qui pénètre dans le bois en cours de traitement. Ces organes peuvent être des soupapes d'échappement (11a) ou des caissons (11b) enveloppant les pièces de bois, caissons dans lesquels le milieu de pression secondaire ne peut pas pénétrer.
Hellgren Keijo
Johannisson Tom
Asea Brown Boveri Ab
Avure Technologies Ab
Robic
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