F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 1/06 (2006.01) F04C 2/12 (2006.01) F04C 18/18 (2006.01) F16H 39/36 (2006.01) F16H 55/08 (2006.01)
Patent
CA 2384748
A kind of gear is provided with shorter teeth, transition teeth and at least one longer tooth. The cross-section of the longer tooth is of a hawk beak shape, and the profile of the longer tooth is smoothly connected in series by a convex section, a tip section, a concave section, and a leading section. The two sides of the longer tooth are each provided with a transition tooth which neighbors a shorter tooth on the opposite side of the longer tooth. The pair of engaging gears according to this invention have advantages of reducing the fluid leakage, canceling the inertia of the rotors, and minimizing the vibration and noise. This invention also discloses a fluid machine for conveying, compressing or expanding liquid or gaseous fluids, which includes a casing comprising a housing, an upper end cover and a lower end cover. At least one pair of engaging gears which includes one driving rotor according to this invention and one driven rotor according to this invention is accommodated in the housing. As a result, the leakage between the rotors can be reduced, therefore the compression ratio can be improved. In addition, over compression and under compression can be avoided in operation.
L'invention concerne un engrenage composé d'une petite roue, d'une roue de transition et d'une grande roue, l'extrémité de cette dernière adoptant la forme d'un bec d'aigle et la courbure de son profil reliant les lignes tracée de l'arrière, de la tête, de l'évidement et de l'encoche de l'engrenage. Les deux extrémités de la grande roue sont reliées par la roue de transition à la petite roue. Grâce à cet engrenage on peut réduire les fuites, équilibrer complètement la force d'inertie du rotor et diminuer les vibrations et le bruit. L'invention concerne également un appareil pour fluide utilisé pour transporter, comprimer ou gonfler un liquide ou un fluide et comprenant un boîtier formé d'un cylindre et de deux couvercles d'extrémité ainsi que le double engrenage doté d'au moins un rotor meneur et un rotor mené logés dans le boîtier. L'engrenage permet d'éviter les fuites entre les rotors, d'augmenter le rapport de pression et d'éviter la surcompression et la sous-compression.
Dennison Associates
Xiong Wei
LandOfFree
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