초록 ▼

A multipoint injector includes a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores. A plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores. A plurality

A multipoint injector includes a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores. A plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores. A plurality of injection orifices are respectively aligned in fluid communication with the swirl chambers for issuing a swirling spray of fluid passing from each swirl chamber through each injection orifice.

대표청구항 ▼

1. A multipoint injector comprising: a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores, wherein a plurality of swirl chambers is defined on a radially outward surface of the nozzle body in fluid communication with the fluid inlet through the feed bores; anda

1. A multipoint injector comprising: a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores, wherein a plurality of swirl chambers is defined on a radially outward surface of the nozzle body in fluid communication with the fluid inlet through the feed bores; anda nozzle tip mounted to the nozzle body, wherein the nozzle tip defines a plurality of injection orifices, each injection orifice aligned in fluid communication with a respective one of the swirl chambers for issuing a swirling spray of fluid passing from the swirl chamber through the injection orifice, wherein each respective swirl chamber is in fluid communication with two opposed tangential feed slots each in fluid communication with a separate one of the feed bores, wherein the feed slots are configured to convey fluid from the feed bores into the swirl chambers to induce swirl on fluids within the swirl chambers, wherein the swirl chambers and feed slots form a circumferential channel all the way around the nozzle body, and wherein there is a circumferential pattern around the circumferential channel with one feed bore between each adjacent pair of swirl chambers, and with one swirl chamber between each adjacent pair of feed bores. 2. A multipoint injector comprising: a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores, wherein a plurality of swirl chambers is defined on a radially outward surface of the nozzle body in fluid communication with the fluid inlet through the feed bores; anda nozzle tip mounted to the nozzle body, wherein the nozzle tip defines a plurality of injection orifices, each injection orifice aligned in fluid communication with a respective one of the swirl chambers for issuing a swirling spray of fluid passing from the swirl chamber through the injection orifice, wherein each respective swirl chamber is in fluid communication with two opposed tangential feed slots each in fluid communication with a separate one of the feed bores, wherein the feed slots are configured to convey fluid from the feed bores into the swirl chambers to induce swirl on fluids within the swirl chambers, wherein the swirl chambers and feed slots form a circumferential channel all the way around the nozzle body, and wherein the circumferential channel is at a first axial location on the nozzle body, and wherein a second circumferential channel is at a second axial location spaced apart from the first axial location, the second circumferential channel including a plurality of swirl chambers and respective feed bores in fluid communication through respective feed slots, and wherein the nozzle tip includes a respective injection orifice in fluid communication with each swirl chamber of the second circumferential channel. 3. A multipoint injector as recited in claim 2, wherein the feed bores of the second circumferential channel are in fluid communication with the fluid inlet of the nozzle body, both circumferential channels forming a single injection circuit. 4. A multipoint injector as recited in claim 2, wherein the feed bores of the second circumferential channel are in fluid isolation from the feed bores of the circumferential channel at the first axial location, with the first and second circumferential channels forming separate injection circuits. 5. A multipoint injector as recited in claim 2, wherein the swirl chambers and injection orifices of the circumferential channel at the first axial location are circumferentially offset from the swirl chambers and injection orifices of the second circumferential channel for providing a substantially uniform spray distribution circumferentially. 6. A multipoint injector as recited in claim 2, wherein each of the circumferential channels includes eight swirl chambers for a total of sixteen swirl chambers, and wherein the nozzle tip includes sixteen injection orifices corresponding to the sixteen swirl chambers of the nozzle body. 7. A multipoint injector as recited in claim 1, further comprising a timing pin aligning the swirl chambers of the nozzle body to the respective injection orifices of the nozzle tip. 8. A multipoint injector as recited in claim 1, wherein at least one heat shielding pocket is defined between the nozzle body and the nozzle tip. 9. A multipoint injector as recited in claim 1, wherein at least one braze joint mounts the nozzle body to the nozzle tip. 10. A multipoint injector as recited in claim 1, wherein the nozzle tip defines a central bore with a vent for venting the central bore. 11. A multipoint injector as recited in claim 1, wherein the feed bores are each defined radially relative to an axis defined by the fluid inlet. 12. A multipoint injector comprising: a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores, wherein a plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores, and wherein a plurality of injection orifices are respectively aligned in fluid communication with the swirl chambers for issuing a swirling spray of fluid passing from each swirl chamber through each injection orifice, wherein each respective swirl chamber is in fluid communication with two opposed tangential feed slots each in fluid communication with a separate one of the feed bores, wherein the feed slots are configured to convey fluid from the feed bores into the swirl chambers to induce swirl on fluids within the swirl chambers, wherein the swirl chambers and feed slots form a circumferential channel all the way around the nozzle body, and wherein there is a circumferential pattern around the circumferential channel with one feed bore between each adjacent pair of swirl chambers, and with one swirl chamber between each adjacent pair of feed bores. 13. A multipoint injector comprising: a nozzle body defining a fluid inlet in fluid communication with a plurality of feed bores, wherein a plurality of swirl chambers is defined radially outward from the fluid inlet of the nozzle body in fluid communication with the fluid inlet through the feed bores, and wherein a plurality of injection orifices are respectively aligned in fluid communication with the swirl chambers for issuing a swirling spray of fluid passing from each swirl chamber through each injection orifice, wherein each respective swirl chamber is in fluid communication with two opposed tangential feed slots each in fluid communication with a separate one of the feed bores, wherein the feed slots are configured to convey fluid from the feed bores into the swirl chambers to induce swirl on fluids within the swirl chambers, wherein the swirl chambers and feed slots form a circumferential channel all the way around the nozzle body, and wherein the circumferential channel is at a first axial location on the nozzle body, and wherein a second circumferential channel is at a second axial location spaced apart from the first axial location, the second circumferential channel including a plurality of swirl chambers and respective feed bores in fluid communication through respective feed slots, and wherein the nozzle tip includes a respective injection orifice in fluid communication with each swirl chamber of the second circumferential channel.