US 11,939,917 B2
Apparatus for oil lubrication of a rotationally fixed connection between two shafts
Jürgen Beier, Schulzendorf (DE)
Assigned to ROLLS-ROYCE DEUTSCHLAND LTD & CO KG, Blankenfelde-Mahlow (DE)
Filed by ROLLS-ROYCE DEUTSCHLAND LTD & CO KG, Blankenfelde-Mahlow (DE)
Filed on Jul. 20, 2022, as Appl. No. 17/869,246.
Claims priority of application No. 10 2021 118 933.0 (DE), filed on Jul. 21, 2021.
Prior Publication US 2023/0025047 A1, Jan. 26, 2023
Int. Cl. F02C 7/06 (2006.01); F02C 7/28 (2006.01); F02C 7/36 (2006.01)
CPC F02C 7/06 (2013.01) [F02C 7/28 (2013.01); F02C 7/36 (2013.01); F05D 2240/61 (2013.01); F05D 2250/231 (2013.01); F05D 2250/291 (2013.01); F05D 2260/36 (2013.01); F05D 2260/98 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An apparatus for oil lubrication of a rotationally fixed connection between two shafts, comprising:
the two shafts including a first shaft and a second shaft, with the first shaft engaging with a shaft region in a hollow-cylindrical shaft region of the second shaft, and the two shafts are operatively connected to each other in a form-fitting manner in an overlapping region,
wherein oil is introduced in an axial direction through a central opening into a first chamber in a hollow-cylindrical region of the second shaft, the first chamber being fluidically connected to a second chamber in the hollow-cylindrical region of the second shaft by a first fluidic connection,
wherein the second chamber is fluidically connectable to a third chamber by a second fluidic connection,
wherein the third chamber is arranged in the overlapping region between the first shaft and the second shaft, and
a sealing element, wherein the second fluidic connection between the second chamber and the third chamber is separated above a defined oil volume in the second chamber and above a rotational speed threshold of the two shafts via thea sealing element which is reversibly deformable at least in regions by the defined oil volume in the second chamber and a centrifugal force acting thereon and, in a deformed state, seals the second fluidic connection between the second chamber and the third chamber in relation to the second chamber.