| 摘要 |
996,112. Gas turbine engines. ROLLS-ROYCE Ltd. Sept. 2, 1963, No. 34650/63. Heading F1G. [Also in Division F2] In a means for supplying lubricant to the bearing immediately rotation takes place and to ensure that a quantity of lubricant is retained so that the bearing can be lubricated during its period of rotation, the bearing is first freely supplied with lubricant through an aperture or apertures and then gradually supplied with lubricant through a selected aperture or apertures. In an embodiment, a gas turbine vertical lift engine 10 comprises a compressor 11, combustion equipment 12 and a turbine 13, the compressor and turbine being mounted on a shaft 15 which is supported by a ball bearing 16. An annular lubricant chamber 31 has an inner wall 32, an outer wall 33 and a base 34 and has a compartment 35 with a central portion 36 which communicates with an inlet duct 37 connected to a pump 40. The chamber 31 has also two portions 41 which are separated from the portion 36 by weirs 42; has compartments 43-46 which are formed by radial wall members 47; each wall 47 having an aperture 50 therein; and has a large compartment 51 positioned intermediate two compartments 46. The central portion 36 has in its base 34 two apertures 52 and each of the two compartments 46 has in its base 34 an aperture 53, the apertures 52, 53 allowing lubricant to flow to the bearing 16. The compartment 35 and portions 41 are covered by a plate 54 and a vent 55 is provided between the plate 54, and the inner wall 32 of the central portions 36, so that lubricant may be passed to, an annular space 56 which is formed between the inner wall 32 and the shaft 15. The annular space 56 is connected to the compartment 51 by apertures 60 in the wall 32 and lubricant is passed to the bearing 16 through apertures 61 in the base 34 of the compartment 51. In operation, the pump forces a single shot of lubricant through the duct 37 and into the central portion 36. A small proportion of the lubricant is retained in the portion 36 by the weirs 42 and is passed to the bearing 16 via the apertures 52 in the base 34. The greater part of the shot enters the portions 41 and passes through the apertures 50 in the walls 47, through compartments 43-45 and into the two compartments 46, from where it passes to the bearing 16 via apertures 53. If more than one shot of lubricant is inadvertently delivered to the portion 36, the excess lubricant is passed through the vent 55 and into the annular space 56, from where it is gradually fed to the bearing through the apertures 60, 61. |
