Device with a torque-proof first structural component and a second structural component that is connected at least in certain parts in a rotatable manner to the first structural component

Patent metadata

Field	Value
Publication number	US-10100918-B2
Application number	US-201514958363-A
Country	US
Kind code	B2
Filing date	Dec 3, 2015
Priority date	Dec 4, 2014
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A device with a torque-proof first structural component and a second structural component that is connected at least in certain areas in a rotatable manner to the first structural component, wherein hydraulic fluid can be guided to lubrication points via the first structural component and the second structural component. The second structural component is embodied with blade areas which are extending substantially at a defined angle in the radial direction inside the second structural component and between which transmission areas for hydraulic fluid of the second structural component are provided, with their flow cross sections decreasing in the transmission areas in the flow direction of the hydraulic fluid.

First claim

The invention claimed is:

1. A device comprising:
a fixed first structural component including a supply area for hydraulic fluid;
a second structural component that is connected at least in certain areas in a rotatable manner to the first structural component, the second structural component including a rotational axis and a transmission area for the hydraulic fluid,
an interface between the first structural component and the second structural component,
wherein the hydraulic fluid is guided to lubrication points via the first structural component and the second structural component,
wherein the second structural component includes a blade area extending in a radial direction inside the second structural component and including an input portion, an output portion and a plurality of blades positioned around a circumference of the second structural component, the plurality of blades extending between the input portion and the output portion at a defined angle with respect to the radial direction and forming a plurality of transmission areas between the plurality of blades, the blades shaped to continuously decrease flow cross-sections of the transmission areas in flow directions of the hydraulic fluid from the input portion to the output portion;
wherein the first structural component is arranged inside the second structural component and the hydraulic fluid is guided via the first structural component and the interface radially from the inside to an outside into the second structural component.

2. The device according to claim 1 , wherein the hydraulic fluid is guided in the radial direction through the transmission areas against a rotational direction of the second structural component.

3. The device according to claim 1 , and further comprising a sealing device sealing the interface against an environment of the first and second structural components, the interface comprising a transition area that is limited by areas of the first and second structural components which are overlapping in the radial direction and which carry the hydraulic fluid during operation, the transition area being connected to the supply area and to the transmission areas.

4. The device according to claim 3 , wherein the interface forms an area of a floating hydrodynamic bearing that carries the hydraulic fluid between the first and second structural components.

5. The device according to claim 3 , wherein the sealing device includes at least one thread area in an area of a surface of at least one chosen from the first structural component and the second structural component that faces a surface of the other of the at least one chosen from the first structural component and the second structural component.

6. The device according to claim 5 , and further comprising a recirculation area positioned adjacent the at least one thread area, the recirculation area leading to the interface and connecting the interface to an area of the at least one thread area that faces away from the interface.

7. The device according to claim 6 , wherein the recirculation area includes at least one chosen from a channel and a bore in at least one chosen from the first structural component and the second structural component.

8. The device according to claim 5 , wherein a pitch and a height of a turn of a thread of the at least one thread area increases with growing distance from the interface.

9. The device according to claim 5 , wherein the at least one thread area includes two thread areas and the transition area is arranged in an axial extension of the first and second structural components between the two thread areas.

10. The device according to claim 5 , wherein the at least one thread area comprises a multi-start thread.

11. The device according to claim 1 , and further comprising bolt elements positioned in slotted holes for supporting and fixing the first structural component.

12. The device according to claim 3 , wherein the supply area includes a plurality of oil supply areas arranged in a symmetrically distributed manner over a circumference of the first structural component.

13. The device according to claim 5 , and further comprising a further sealing device including a seal ring, provided on a side of the at least one thread area that faces away from the interface.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Venter Gideon

Classifications

• F04D29/086

  especially adapted for liquid pumps · CPC title

• F01D25/20

  using lubrication pumps · CPC title

• F05D2260/40311

  of the epicyclical, planetary or differential type · CPC title

• F16H57/0427

  on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force · CPC title

• Y02T50/671

  Cross-Sectional Technologies · mapped topic