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3828 results about "Mixing chamber" patented technology

Aerial engine lean premixed preevaporated low contamination combustion chamber

An aero-engine lean-oil premixed pre-evaporation low-pollution combustor consists of a head and a flame tube, the combustion gas is all supplied from the head of the combustor, and the cooling gas and mixed gas enter from the flame tube; the head is The double-ring cavity structure is divided into two stages, the pre-combustion stage and the main combustion stage. The pre-combustion stage is included, and the main combustion stage surrounds the pre-combustion stage. The pre-combustion stage includes a centrifugal nozzle and a swirler surrounding the centrifugal nozzle. After being sprayed out from the centrifugal nozzle, the fuel is sheared and broken by the air swirl from the swirler, mixed in the mixing chamber area of ​​the pre-combustion stage and then enters the combustion area Diffusion combustion is formed inside; the main combustion stage includes a direct air atomizing nozzle, a main swirler and a premixing ring chamber, the main swirler is located upstream of the nozzle, and the premixing ring chamber is located downstream of the nozzle, and the fuel goes first in the nozzle It is mixed and atomized with air, and then tangentially injected into the premixed ring cavity for premixed pre-evaporation, and enters the combustion area to form premixed combustion; in the downstream of the pre-combustion stage combustion and main combustion stage fuel outlets, contraction and expansion ports are used to prevent backflow fire and carbon buildup. The invention has a simple structure and can effectively reduce the pollution discharge of the aero-engine under the condition of ensuring the working state.
Owner:BEIHANG UNIV

Color-tunable illumination system

The invention relates to a color-tunable illumination system (10; 12; 14) and a luminaire. The color-tunable illumination system comprises a first light source comprising a first set of light emitting diodes (21, 24), and a second light source comprising a second set of light emitting diodes (31, 37, 34). Both the first and second light source emit light of substantially a first predefined color into a light mixing chamber (60). The light mixing chamber further comprises a first luminescent material (50) converting light of the first predefined color into light of a second predefined color. The first light source is positioned with respect to the first luminescent material for illuminating the first luminescent material with a first flux of light being part of the light emitted by the first light source into the light mixing chamber. The second light source is positioned with respect to the first luminescent material for illuminating the first luminescent material with a second flux of light being part of the light emitted by the second light source into the light mixing chamber. The first flux is different from the second flux. The effect of the measures according to the invention is that a change in the intensity of the light emitted by the first light source relative to the intensity of the light emitted by the second light source results in a change of the color emitted by the color-tunable illumination system.
Owner:SIGNIFY HLDG BV
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