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473results about How to "Increase the curvature" patented technology

Bionic impeller for exhaust hood

ActiveCN104100570AEasy to processReduce leading edge pressure shockDomestic stoves or rangesPump componentsImpellerEngineering
The invention relates to a bionic impeller for an exhaust hood. The bionic impeller is applied to the exhaust hood and comprises a plurality of groups of annular end surfaces and blades. The corresponding blades are uniformly in bridge connection between each two groups of annular end surfaces. The bionic impeller is characterized in that the blades are bionic blades, the front edges of the bionic blades face a suction side of the exhaust hood and are of wavy structures, and the tail edges of the bionic blades face a blowout side of the exhaust hood and are of sawtooth structures. The bionic impeller has the advantages that pressure impact on the front edges of the blades and vortex-shedding frequencies of the tail edges of the blades can be reduced advantageously, and accordingly pneumatic noise generated when the impeller works can be reduced; extended areas of the blades can be reduced by 13.5% as compared with blades in original shapes, accordingly, the weight of the impeller can be reduced, loads on a motor can be decreased, and the efficiency of a fan can be improved advantageously.
Owner:HANGZHOU DE&E ELECTRICAL CO LTD

Solid-state imaging device, solid-state imaging device manufacturing method, electronic device, and lens array

ActiveUS20110073751A1Improve sensitivityFocus efficiency be improveTransistorSolid-state devicesMicrolensEngineering
A solid-state imaging device includes: multiple micro lenses, which are disposed in each of a first direction and a second direction orthogonal to the first direction, focus the incident light into the light-receiving surface; with the multiple micro lenses of which the planar shape is a shape including a portion divided by a side extending in the first direction and a side extending in the second direction being disposed arrayed mutually adjacent to each of the first direction and the second direction; and with the multiple micro lenses being formed so that the depth of a groove between micro lenses arrayed in a third direction is deeper than the depth of a groove between micro lenses arrayed in the first direction, and also the curvature of the lens surface in the third direction is higher than the curvature of the lens surface in the first direction.
Owner:SONY CORP

Conductive paste for solar cell and preparation method thereof

The invention provides a conductive paste and a preparation method thereof. The conductive paste comprises aluminum powder, an inorganic binding agent, an organic carrier and metal-glass composite powder, wherein the metal-glass composite powder is of nano-particles and a core-shell structure, glass is used as a core material, and metal is used as a shell material. The conductive paste disclosed by the invention is good in storage stability and less prone to sedimentation and agglomeration, and the conductive paste is less prone to leakage from a screen during screen printing; after sintering, an aluminum film is smooth in surface and grey white, and has no aluminum vesicles or aluminum beads; and furthermore, the part in contact and superimposition with a back silver electrode, of the aluminum film is wiped by a non-dust cloth, and wiping traces and powder dropping can be avoided. The series resistance of the produced solar cell is reduced obviously, a filling factor is increased obviously, and the average photoelectric conversion efficiency of a monocrystalline silicon cell piece can be above 18.20%. Simultaneously, the conductive paste disclosed by the invention is good in construction performance, a film layer formed after sintering is compact, the sintering thickness is uniform, the bending of a silicon chip is small, the sheet resistance is small and the open circuit voltage (Voc) of the formed cell is high.
Owner:BYD CO LTD

Non-ceramic hard armor composite

InactiveUS20060030226A1CheapIncrease protectionSynthetic resin layered productsWoven fabricsGramFiber
A hard armor composite includes a rigid non-ceramic facing and a ballistic fabric backing. The fabric backing is carried by the facing, and includes an array of bundled high-performance fibers. The fibers have a tensile strength greater than 7 grams per denier and a denier per filament ratio of less than 5.4.
Owner:ARMORWORKS ENTERPRISES +1
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