Aircraft Engine Deaerator Swirler for Air-Oil Separation

The patent replaces the static gravitational separation system with a dynamic centrifugal separation system. The swirler cavity and swirling conduit portion create rotational motion that generates centrifugal force, substituting the need for a large static reservoir with a compact dynamic mechanism that achieves separation through centrifugal acceleration rather than gravitational settling over time.

The patent changes the separation mechanism from gravitational (static) to centrifugal (dynamic). By introducing rotational motion and changing the physical parameter from gravity-based settling to centrifugal force-based separation, the system achieves effective air-oil separation in a much smaller, lighter configuration suitable for aircraft engines.

The patent introduces dynamic elements to the deaerator system. The swirling conduit portion and swirler cavity create continuous rotational motion, transforming a static separation process into a dynamic one. This dynamic approach maintains effective separation under the varying conditions of aircraft engine operation, where oil return characteristics change with engine power and operating state.

The patent utilizes fluid dynamics and hydraulic principles to achieve separation. The swirling conduit portion and swirler cavity are designed to create specific flow patterns and centrifugal forces that separate air from oil based on density differences. The system exploits pneumatic and hydraulic effects rather than mechanical moving parts, achieving high separation efficiency in a reliable manner.

The patent divides the deaerator into distinct functional segments: the swirling conduit portion that generates rotational flow, the swirler cavity that maintains the vortex, and the separation zone where air and oil are divided into radial and axial segments. This segmentation allows each component to perform its specific function efficiently while keeping the overall design manageable and maintainable.

The swirling conduit portion and swirler cavity are designed to generate and maintain centrifugal separation automatically based on the incoming oil flow characteristics. The system self-regulates the separation process through its geometric design, requiring no external control mechanisms or additional complexity. The centrifugal separation occurs naturally as oil enters the swirler, with air and oil automatically separating based on density and centrifugal force.