F - Mech Eng,Light,Heat,Weapons – 16 – C
Patent
F - Mech Eng,Light,Heat,Weapons
16
C
F16C 17/12 (2006.01) F16C 23/04 (2006.01) F16C 27/06 (2006.01)
Patent
CA 2496911
A foil-fluid bearing assembly (10) adapted for supporting a shaft (12) within an outer bearing housing (14). The foil-fluid bearing assembly (10) comprises a bearing sleeve (16) having an outer surface (20) and an inner circumferential surface (18) diametrically sized to receive the shaft (12) therewithin such that an annular clearance gap (24), radially defined between an outer surface (26) of the shaft (12) and the inner circumferential surface (18), is adapted for accommodating fluid therein and axially extends along a substantial portion of a length of the bearing sleeve (16), and has a foil element (28) disposed therewithin. Compliant bearing supports (30, 32) between the outer surface (20) of the bearing sleeve (16) and the outer bearing housing (14), comprises at least two independent compliant support elements (30, 32) respectively having a first and a second modulus of elasticity, wherein the first modulus of elasticity is less than the second modulus of elasticity. Angular misalignment capability for the foil-fluid bearing (10) is provided by the compliant support elements (30, 32).
L'invention concerne un ensemble (10) palier feuille et fluide conçu pour soutenir un arbre (12) à l'intérieur d'un corps (14) de palier externe. Cet ensemble palier (10) feuille et fluide comprend une chemise (16) d'arbre présentant une surface externe (20) et une surface périphérique interne (18) dont le diamètre est calculé de manière à entourer l'arbre (12) en ménageant un espace (24) radial annulaire entre la surface externe (26) de l'arbre et la surface (18) périphérique interne, conçu pour contenir un fluide, et s'étendant axialement le long d'une grande proportion de la longueur de la chemise (16) d'arbre, et dans lequel est en outre disposé un élément feuille (26). Des supports (30, 32) de palier flexibles placés entre la surface externe (20) de la chemise d'arbre et le corps (14) de palier externe, comprennent au moins deux éléments (30, 32) de support flexibles qui présentent un premier et un second module d'élasticité respectifs, le premier module d'élasticité étant inférieur au second module d'élasticité. Ces éléments de support souple permettent la compensation du désalignement angulaire du palier (10) feuille et fluide.
Dubreauil Jean
Leclair Denis
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Pratt & Whitney Canada Corp.
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