Discrete jet atomizer
AssigneeDelavan Inc.
InventorsChien-Pei Mao, John Earl Short
Life of this patent
Estimating the term…
Abstract
An atomizer including a fuel output portion shaped to provide a fuel output and an air swirler portion shaped to direct streams of air at the fuel. The air swirler portion includes an outer opening and an inner opening located radially inwardly relative to the outer opening. The inner and outer openings are arranged such that an air stream passed through the inner opening does not intersect a conical section defined by an air stream passed through the outer opening unless both of said air streams are moving at least partially radially outwardly.
Claims31
An atomizer comprising:
- a fuel output portion shaped to provide an output of fuel;
- and
- an air swirler portion shaped to direct streams of air at said fuel, said air swirler portion including an outer opening and an inner opening located radially inwardly relative to said outer opening, said inner and outer openings being arranged such that an air stream passed through said inner opening does not intersect a body of rotation defined by an air stream passed through said outer opening unless both of said air streams are moving at least partially radially outwardly at said intersection.
An atomizer comprising:
- a fuel output portion shaped to provide an output of fuel;
- and
- an air swirler portion shaped to direct streams of air at said fuel, said air swirler portion including an outer opening and an inner opening radially spaced apart from a radial center of said atomizer by a radial offset distance, said inner and outer openings being arranged such that an air stream passed through one of said inner opening does not intersect a body of rotation defined by an air stream passed through one of said outer openings within an axial distance of at least about three times the radial offset distance measured from a front face of said atomizer.
An air swirler comprising:
- a swirler body;
- at least one set of outer openings located in said swirler body and arranged in a configuration;
- and
- at least one set of inner openings located in said swirler body and arranged in a configuration that is generally concentric with said set of outer openings, said inner and outer openings being arranged such that an air stream passed through one of said inner openings does not intersect an air stream passed through one of said outer openings when at least one of said air streams is moving at least partially inwardly.
An atomizer comprising:
- a fuel swirler portion shaped to create a film of fuel when fuel is introduced therein;
- and
- an air swirler portion shaped to direct streams of air at said fuel film, said air swirler portion including a set of outer opening arranged in a configuration and a set of inner opening arranged in a configuration that is generally concentric with said set of outer openings, said inner and outer openings being arranged such that an air stream passed through one of said inner openings does not intersect an air stream passed through one of said outer openings unless both of said air streams are moving at least partially radially outwardly at said intersection.
An atomizer comprising:
- a fuel output portion shaped to provide an output of fuel;
- and
- an air swirler portion shaped to direct streams of air at said fuel, said air swirler portion including an outer opening and an inner opening located radially inwardly relative to said outer opening, said inner and outer openings being arranged such that the projection on a plane of an air stream passed through said inner opening does not intersect the projection on said plane of an air stream passed through said outer opening unless both of said air streams are moving at least partially radially outwardly at said intersection.
A method for designing an air swirler having a body with a central axis, a front face, an inner opening and an outer opening comprising the steps of:
- selecting a radial offset of each opening relative to said central axis;
- selecting a pinch point distance for an air stream passed through each of said openings, said pinch point distance being located along said central axis and spaced from said front face;
- selecting an angular offset of each of said openings relative to said central axis;
- and
- using said radial offset, said pinch point and said angular offset to determine the projection of the path of air streams passing through said openings based upon a hyperbola equation.
Dependencies are inferred from the claim text.