Embodiments of the invention relates to an injection element having an inner element with a first outlet opening and an outer element. The outer element includes at least one second outlet opening structured and arranged for receiving and injecting fuel in a combustion space, and arranged coaxially
Embodiments of the invention relates to an injection element having an inner element with a first outlet opening and an outer element. The outer element includes at least one second outlet opening structured and arranged for receiving and injecting fuel in a combustion space, and arranged coaxially to the first outlet opening. The outer element further includes third outlet openings composed of bores structured and arranged for forming a cooling liquid film layer, wherein the bores are arranged coaxially to the first outlet opening and the at least one second outlet opening.
대표청구항▼
1. An injection element, comprising: a front face surface;an inner element with a first outlet opening structured and arranged for receiving and injecting a first portion of fuel;an outer element, comprising: at least one second outlet opening structured and arranged for receiving and injecting a se
1. An injection element, comprising: a front face surface;an inner element with a first outlet opening structured and arranged for receiving and injecting a first portion of fuel;an outer element, comprising: at least one second outlet opening structured and arranged for receiving and injecting a second portion of fuel from the injection element into a combustion space, and arranged coaxially to the first outlet opening; andthird outlet openings radially beyond the at least one second outlet opening composed of bores structured and arranged for forming downstream of the injection element in a fuel-flow direction a cooling liquid film layer, wherein the bores are arranged along a ring, which is coaxial to the first outlet opening and the at least one second outlet opening, and the bores are structured and arranged to supply the cooling liquid film layer in an outwardly-directed direction relative to a longitudinal axis of the first outlet opening upon exiting the injection element,wherein at least two of the first outlet opening, the at least one second outlet opening and the third outlet openings are arranged on the front face surface,wherein the injection element is a rocket drive injection element,wherein the bores open to the combustion space, andwherein the second portion of fuel does not traverse the first outlet opening. 2. The injection element according to claim 1, wherein the outer element further comprises a swirler space in which the bores are located. 3. The injection element according to claim 2, wherein the swirler space comprises a tapering area in which the bores are located. 4. The injection element according to claim 2, wherein the bores are arranged and aligned in the outer element such that a cooling liquid film layer and a fuel injected into the combustion space do not touch one another or mix just after entry into the combustion space. 5. The injection element according to claim 1, wherein the outer element further comprises an annular gap, and wherein the bores connect with the annular gap to generate a swirl. 6. The injection element according to claim 1, wherein the bores are uniformly distributed over an entire circumference of the outer element. 7. The injection element according to claim 1, wherein the bores are uniformly distributed over a portion of an entire circumference of the outer element. 8. An injection element, comprising: a front face surface;an inner element with a first outlet opening;an outer element comprising component feed bores fluidly coupled to a first liquid source,the inner element further comprising bores fluidly coupled to a second liquid source and open to a combustion space, wherein the bores are arranged along a ring, which is coaxial to the first outlet opening to surround the first outlet opening,wherein the bores and the component feed bores are arranged such that liquid jets exiting from the bores mix with liquid jets exiting from the component feed bores,wherein at least two of the first outlet opening, the component feed bores, and the bores are arranged on the front face surface, andwherein the injection element is a rocket drive injection element. 9. The injection element according to claim 1, wherein the outer element is arranged coaxially with the inner element. 10. An injection element, comprising: a front face surface; an inner element comprising a first outlet opening; an outer element with at least one second outlet opening structured and arranged for receiving and injecting fuel from the injection element into a combustion space, and arranged coaxially to the first outlet opening;the inner element further comprising third outlet openings composed of bores fluidly coupled to a liquid source and structured and arranged for forming downstream of the injection element in a fuel-flow direction a cooling liquid film layer, wherein the bores are arranged along a ring, which is coaxial to the first outlet opening and the at least one second outlet opening to surround the first outlet opening, and the bores are structured and arranged to supply the cooling liquid film layer in an outwardly-directed direction relative to a longitudinal axis of the first outlet opening upon exiting the injection element,wherein at least two of the first outlet opening, the at least one second outlet opening and the third outlet openings are arranged on the front face surface,wherein the injection element is a rocket drive injection element, andwherein the bores open to the combustion space. 11. The injection element according to claim 10, wherein the bores are uniformly distributed over an entire circumference of the inner element. 12. The injection element according to claim 10, wherein the bores are uniformly distributed over a portion of an entire circumference of the inner element. 13. The injection element according to claim 10, wherein the outer element is arranged coaxially with the inner element. 14. A method of injecting fuel from an injection element into a combustion chamber comprising: guiding a first portion of fuel into the combustion chamber through a first outlet opening of the injection element;guiding a second portion of fuel into the combustion chamber through a second outlet opening of the injection element arranged coaxially with the first outlet opening; andforming downstream of the injection element in a fuel-flow direction a cooling liquid film layer in the combustion chamber through bores arranged to coaxially surround the first outlet opening, and structured and arranged to supply the cooling liquid film layer in an outwardly-directed direction relative to a longitudinal axis of the first outlet opening upon exiting the injection elementwherein the second portion of fuel does not traverse the first outlet opening. 15. The method according to claim 14, wherein the cooling liquid film layer is directed at least in part towards a combustion space inner wall. 16. The method of claim 14, wherein the bores are arranged to coaxially surround the second outlet opening. 17. The method of claim 14, wherein fuel for forming the cooling liquid film layer is supplied from the fuel guided to the first outlet opening. 18. The method of claim 14, wherein fuel for forming the cooling liquid film layer is supplied from the fuel guided to the second outlet opening. 19. The injection element according to claim 1 in combination with a combustion chamber, wherein the third outlet openings are structured and arranged for forming the cooling liquid film layer on a wall of the combustion chamber. 20. The injection element according to claim 10, in combination with a combustion chamber, wherein the third outlet openings are structured and arranged for forming the cooling liquid film layer on a wall of the combustion chamber. 21. The injection element according to claim 1, wherein each of the first outlet opening, the at least one second outlet opening and the third outlet openings are arranged on the front face surface. 22. The injection element according to claim 10, wherein each of the first outlet opening, the at least one second outlet opening and the third outlet openings are arranged on the front face surface. 23. The injection element according to claim 8, wherein the bores and the component feed bores are structured and arranged such that one liquid jet exiting from a respective bore mixes with two liquid jets exiting from two respective component feed bores such that three liquid jets intersect to form an unlike triplet. 24. The injection element according to claim 8, wherein the bores and the component feed bores are structured and arranged such that one liquid jet exiting from a respective bore mixes with one liquid jet exiting from a respective component feed bore such that two liquid jets intersect to form an unlike doublet.
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