An atomizing injector includes a metering set having a swirl chamber, a spray orifice and one or more feed slots etched in a thin plate. The swirl chamber is etched in a first side of the plate and the spray orifice is etched through a second side to the center of the swirl chamber. Fuel feed slots
An atomizing injector includes a metering set having a swirl chamber, a spray orifice and one or more feed slots etched in a thin plate. The swirl chamber is etched in a first side of the plate and the spray orifice is etched through a second side to the center of the swirl chamber. Fuel feed slots extend non-radially to the swirl chamber. The injector also includes integral swirler structure. The swirler structure includes a cylindrical air swirler passage, also shaped by etching, through at least one other thin plate. The cylindrical air swirler passage is located in co-axial relation to the spray orifice of the plate of the fuel metering set such that fuel directed through the spray orifice passes through the air swirler passage and swirling air is imparted to the fuel such that the fuel has a swirling component of motion. At least one air feed slot is provided in fluid communication with the air swirler passage and extends in non-radial relation thereto. Air supply passages extend through the plates of the metering set and the swirler structure to feed the air feed slot in each plate of the swirler structure.
대표청구항▼
What is claimed is: 1. An injector, comprising: a metering set including a plate of etchable material, the plate having a first side and a second side, the first side having a bowl-shaped swirl chamber shaped by etching such that a first fluid to be dispensed from the injector can move therein in a
What is claimed is: 1. An injector, comprising: a metering set including a plate of etchable material, the plate having a first side and a second side, the first side having a bowl-shaped swirl chamber shaped by etching such that a first fluid to be dispensed from the injector can move therein in a vortex motion toward the center of the swirl chamber; an orifice in fluid communication with the center of the swirl chamber and extending substantially co-axial therewith to the second side such that first fluid to be dispensed from the injector can move from the swirl chamber to the orifice and then exit the orifice through the second side; at least one first feed slot in fluid communication with the swirl chamber and extending in non-radial relation thereto for supplying the first fluid to be dispensed through the injector; and a swirler assembly including a plate of etchable material, the plate of the swirler assembly arranged alongside the second side of the plate of the metering set, a swirler passage shaped by etching through the plate of the swirler assembly, the swirler passage located in relation to the orifice of the plate of the metering set such that the first fluid directed through the orifice passes through the swirler passage and a second, swirling fluid can be imparted to the first fluid to cause the first fluid to have a swirling component of motion; and at least one second feed slot in fluid communication with the swirler passage for supplying the second fluid to be swirled in the swirler passage. 2. The injector as in claim 1, wherein the swirler assembly includes multiple plates in surface-to-surface adjacent relation, each of said multiple plates having a portion of the swirler passage and each of the multiple plates including at least one second feed slot in fluid communication with the respective swirler portion for supplying multiple fluid streams to be swirled in the swirler passage. 3. The injector as in claim 2, wherein a fluid supply passage feeds all the at least one second feed slots of the multiple plates. 4. The injector as in claim 3, wherein the fluid supply passage extends axially through the multiple plates. 5. The injector as in claim 1, wherein the swirler assembly includes multiple plates in surface-to-surface adjacent relation, each of said multiple plates having a portion of the swirler passage and each of the multiple plates including a plurality of second fluid feed slots spaced around the swirler chamber in fluid communication with the respective swirler portion for supplying multiple fluid streams to be swirled in the swirler passage. 6. The injector as in claim 5, wherein a fluid supply passage feeds a second fluid feed slot in each plate of all the multiple plates. 7. The injector as in claim 6, wherein the fluid supply passage extends axially through the multiple plates. 8. The injector as in claim 1, wherein a fluid supply passage is in fluid communication with the at least one second feed slot, the fluid supply passage extending in axial relation thereto for supplying fluid to the at least one second fluid feed slot. 9. The injector as in claim 1, further including at least one fluid supply passage extending through said plate of the metering set and in fluid communication with the at least one second feed slot in the plate of the swirler assembly. 10. The injector as in claim 1, wherein the swirler passage of the swirler assembly has a larger dimension than the spray orifice in the metering set. 11. The injector as in claim 1, wherein the plate of the metering set and the plate of the swirler assembly are formed of metal. 12. The injector as in claim 1, wherein the at least one second feed slot is shaped by etching a first side of the swirler plate. 13. The injector as in claim 1, wherein the plate of the metering set is disposed in surface-to-surface adjacent relation to the plate of the swirler assembly. 14. The injector as in claim 1, wherein the at least one second feed slot extends in the plane of the plate of the swirler assembly. 15. The injector as in claim 4, wherein the at least one second feed slot in each plate of the swirler assembly extends in the plane of the respective plate. 16. The injector as in claim 7, wherein the feed slots in each plate of the swirler assembly extend in the plane of the respective plate. 17. An injector, comprising: a metering set including a plate of etchable material, the plate having a first, upstream side and a second, downstream side, the first side having a bowl-shaped swirl chamber shaped by etching such that a first fluid to be dispensed from the injector can move therein in a vortex motion toward the center of the swirl chamber; an orifice in fluid communication with the center of the swirl chamber and extending substantially co-axial therewith to the second side such that first fluid to be dispensed from the injector can move from the swirl chamber to the orifice and then exit the orifice through the second side; at least one first feed slot in fluid communication with the swirl chamber and extending in non-radial relation thereto for supplying the first fluid to be dispensed through the injector; and a swirler assembly including a plate of etchable material, the plate of the swirler assembly located downstream from the plate of the metering set, a swirler passage shaped by etching through the plate of the swirler assembly, the swirler passage located in relation to the orifice of the plate of the metering set such that the first fluid directed through the orifice passes through the swirler passage and a second fluid can be imparted to the first fluid to influence a component of motion of the first fluid; and at least one second feed slot in fluid communication with the swirler passage and extending in non-radial relation thereto, for supplying the second fluid to the swirler passage. 18. The injector as in claim 17, wherein the plate of the swirler assembly set is located in parallel, adjacent relation to the plate of the metering set. 19. The injector as in claim 17, wherein the swirler passage is cylindrical. 20. An injector, comprising: a first plate of etchable material, the first plate having a first, upstream side and a second, downstream side, the first side having a bowl-shaped swirl chamber shaped by etching such that a first fluid to be dispensed from the injector can move therein in a vortex motion toward the center of the swirl chamber; an orifice in fluid communication with the center of the swirl chamber and extending substantially co-axial therewith to the second side such that first fluid to be dispensed from the injector can move from the swirl chamber to the orifice and then exit the orifice through the second side; at least one first feed slot in fluid communication with the swirl chamber and extending in non-radial relation thereto for supplying the first fluid to be dispensed through the injector; and a second plate of etchable material, the second plate located downstream from the first plate, a passage shaped by etching through the second plate, the passage located in relation to the orifice of the first plate such that the first fluid directed through the orifice passes through the passage and a second fluid can be imparted to the first fluid; and at least one second feed slot in fluid communication with the passage for supplying the second fluid to the passage.
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이 특허에 인용된 특허 (18)
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