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392results about How to "Improve area utilization" patented technology

Wireless charging coil manufacturing method and wireless charging structure

The invention discloses a wireless charging coil manufacturing method. The wireless charging coil manufacturing method comprises the following steps that (1), a plastic part is prepared, and laser-activated coatings are prepared; (2), to-be-processed areas of the obverse side and the reverse side of the plastic part are each coated with one layer of laser-activated coating; (3), a spiral coil slot and feed point slots are formed in the obverse side of the plastic part through laser, through holes are formed in an internal end point and the second feed point slot, and a pattern slot is formed in the reverse side of the plastic part through laser; (4), the plastic part processed in the third step is washed; (5), chemical copper plating and electrical copper plating are sequentially formed in the slots in the surfaces of the plastic part. A wireless charging structure comprises the plastic part, coil patterns, the two feed points and conducting wire patterns, wherein the coil patterns, the two feed points and the conducting wire patterns are directly formed on the plastic part through the wireless charging coil manufacturing method. The wireless charging coil manufacturing method and the wireless charging structure can meet the development requirements of lightness, thinness and reliability of electronic equipment, the manufacturing process is simple, and the cost of manufactured products is low.
Owner:GUANGDONG JANUS SMART GRP CO LTD

Device and method for combined ejection refrigeration and vapor compression refrigeration cycle

The invention relates to a device and a method for the combined ejection refrigeration and vapor compression refrigeration cycle, aiming at improving the running efficiency of the refrigeration system and solving the problems that the unit power and the unit condensation rate of the compressor increase and the air transmission rate and the refrigeration coefficient decrease due to the regenerative cycle adopted in the vapor compression refrigeration cycle to make the refrigerant have a certain supercooling degree. On the vapor compression refrigeration cycle side, the air exhaust opening of a compressor (2) is connected with the refrigerant inlet of a generator (5), the refrigerant inlet of the generator (5) is connected with the inlet of a first condenser (3), the outlet of the first condenser (3) is connected with the refrigerant inlet of a supercooler (6), the refrigerant outlet of the supercooler (6) is connected with the refrigerant inlet of an evaporator (1) through a throttle valve (4), and the outlet of the evaporator (1) is communicated with the air suction opening of the compressor (2). The ejection refrigeration cycle and the vapor compression refrigeration cycle are combined in the device, and two refrigeration systems are connected through one generator and one supercooler.
Owner:SOUTHEAST UNIV

Method of treating feces in breeding industry

The invention relates to a method of treating feces in breeding industry, in particular relates to a method and a device for treating livestock feces in a breeding house underground to produce biogas and an organic fertilizer and belongs to the technology and equipment needed by resource and environment field. The device comprises a breeding house, a breeding house equipment room, a breeding house aisle, a feces gutter, a feces output pipe, a precipitation and impurity removal system, a solid-liquid separation system, a biogas digester system, a biogas temperature improvement and insulation system, a biogas reflux house flushing and crust breaking system and a biogas storage and purification system, wherein the breeding house, the breeding house equipment room, the breeding house aisle, the feces gutter, the feces output pipe, the precipitation and impurity removal system, the solid-liquid separation system, the biogas digester system, the biogas temperature improvement and insulation system, the biogas reflux house flushing and crust breaking system and the biogas storage and purification system are connected with one another. According to the method disclosed by the invention, the main treatment equipment is mounted in the breeding house underground, is small in occupied area, high in resource comprehensive utilization ratio and remarkable in economical and environmentally friendly benefits and is capable of purifying the biogas and producing the organic fertilizer.
Owner:新疆沃土壮苗农业科技有限公司

Scroll wrap profile of liquid-injected scroll compressor

The invention relates to a scroll wrap profile of a liquid-injected scroll compressor. Outer profiles of a static scroll wrap and a dynamic scroll wrap are composed of a section of a variable diameter base circle involute, and the inner profiles of the static scroll wrap and the dynamic scroll wrap are composed by smoothly connecting a variable diameter base circle involute at a center part and normal equidistant curves of the variable diameter base circle involute of the outer ring. The scroll wrap refers to a scroll wrap with compression chamber variational meshing clearance and the wall thickness of the scroll wrap changing gradually. The meshing part close to a central air outlet of the compression chamber is provided with the meshing clearance which forms a pressure unloading channel to the air outlet with small clearance internal leakage, so that the problems of surge pressure in the compression chamber or liquid impacting which are produced by incompressible liquid with relatively large spraying volume. The meshing point of a suction cavity formed by the scroll wrap has no meshing clearance, so that the suction cavity is completely isolated from the compression chamber; at the same time, the wall thickness of the scroll wrap changes thinner gradually from the center to the outer ring, so that the central part of the scroll wrap has enough strength; and the wall thickness at the outer ring of the scroll wrap is relatively thin, so that area utilization rate of a scroll plate is effectively increased.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)

High-current full-wafer full-crimp flat-pack IGBT and manufacturing method thereof

The invention discloses a heavy-current whole-wafer total-pressure-contact flat-plate encapsulated IGBT (Insulated Gate Bipolar Transistor) and a manufacturing method thereof. The heavy-current whole-wafer total-pressure-contact flat-plate encapsulated IGBT comprises an IGBT whole wafer and a total-pressure-contact flat-plate encapsulation, the whole wafer comprises multiple independent IGBT device regions, each IGBT device region is composed of multiple IGBT units which are connected in parallel, collectors of all the IGBT device regions are connected in parallel to form a total collector, atransmitter is led from each IGBT device region independently, gate poles of all the IGBT device regions in a normal operating state are connected to a total gate pole arranged in the center of the wafer by using an interconnecting line, and the transmitter of each IGBT device region is connected with a metal electrode plate of a total transmitter in parallel by virtue of a metal gasket of the transmitter. According to the invention, a heavy-current IGBT whole wafer device is realized, the advantages of high working voltage, low switching power consumption and simple voltage control of the gate pole are maintained, current carrying capacity, heat-conducting property, heat shock resistance and long-term reliability of the device are improved, and the problem of property matching between IGBT units is solved.
Owner:HUNAN UNIV

Shield tunneling machine for ultralarge U-shaped cross sections

The invention discloses a shield tunneling machine for ultralarge U-shaped cross sections. The shield tunneling machine comprises a cutterhead device, a driving system, a shield structure, a main propelling system, screw conveyors, an equipment bridge, a backup system and a continuous belt conveyor. The cutterhead device is formed by nine spoke-type cutterheads, and driving shafts of the spoke-type cutterheads are parallel, wherein a medium-diameter spoke-type rear cutterhead is positioned at the center of a rear plane, three large-diameter spoke-type front cutterheads are positioned on two sides of the upper portion and the bottom of the middle of a front plane, three large-diameter spoke-type rear cutterheads are positioned on two sides of the upper portion and the bottom of the middle of the rear plane, and two small-diameter spoke-type rear cutterheads are symmetrically distributed at arch edge of the upper portion of the rear plane. The shield tunneling machine can be used for excavation of arched U-shaped cross sections of curved walls and is small in excavation dead zone and adaptive to geology of loess, silty clay, clay, silty sand, soft rock and the like, and the area utilization rate of tunnel cross sections is greatly increased. In addition, by the shield tunneling machine for the ultralarge U-shaped cross sections, construction cost is greatly reduced while construction efficiency is effectively improved.
Owner:CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD

Dynamic diffusion sheet assembly, control method, laser speckle eliminating device and projector

The invention relates to a dynamic diffusion sheet assembly, a control method, a laser speckle eliminating device and a projector. The dynamic diffusion sheet assembly comprises a fixed layer and a moving layer provided with an optical diffusion sheet, and further comprises a driving part and a controller connected with the driving part, wherein the driving part is configured to drive the moving layer to move relative to the fixed layer in the first direction and the second direction respectively in a plane parallel to the optical diffusion sheet. According to the dynamic diffusion sheet assembly, a layered arrangement mode is adopted, the fixed layer is kept still, the driving part drives the movable layer to drive the optical diffusion sheet to move in two directions, a certain point on the optical diffusion sheet has two-dimensional movement flexibility, and compared with a traditional rotary diffusion sheet, the dynamic diffusion sheet assembly has the advantages that the coverage area is larger, different phase divergence angles on the optical diffusion sheet can be fully utilized, the actually utilized area is larger under the condition of the same size, the area utilization rate of the dynamic diffusion sheet is improved, the coherence of laser is better weakened, and a better speckle elimination effect is achieved.
Owner:SHENZHEN HUOLE TECH DEV CO LTD
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