278results about How to "Effective heat transfer" patented technology

An infrared sensor of this invention is characterized by including a support member including a support film and a substrate that supports the support film, a polysilicon film which ranges from above a concavity to above the substrate, SiO₂ which is formed on the polysilicon film and has a first junction hole above the concavity and a second junction hole above the substrate, an aluminum film which is connected to the polysilicon film through the first junction hole and connected to an adjacent polysilicon film through the second junction hole, and a heat absorption layer formed above the concavity to cover a portion above the first junction hole, wherein the aluminum film is stacked on the corresponding polysilicon film via the SiO₂ above the concavity.

The invention provides a method and a device for self-recovery current limiting and circuit breaking by using conductive fluid and magnetic fluid, belonging to the electric and automatic control field. The device comprises a main body and an auxiliary body; an encapsulated casing of the main body forms a closed cavity with an outside solid electrode terminal; the cavity is filled with conductive fluid and magnetic fluid hierarchically; when the number of the cavity is more than one, the cavity is internally provided with clapboards which is provided with inside solid electrode terminals; the cavity volume is divided by the clapboards equally, and each cavity is filled with the conductive fluid and the magnetic fluid hierarchically; the auxiliary body comprises a magnetic field generating device and a temperature regulating device; the main body part and the magnetic field generating device are accessed into a controlled circuit; when fault current exists in the controlled circuit, themagnetic field generating device generates large enough gradient magnetic field to rapidly separate the magnetic fluid from the solid electrode terminal so as to realize rapid breaking of circuits. Asthe response time is in a millisecond level, the invention can effectively protect security of electronic equipment and solves the problems such as contact burning, difficult breaking and the like, and the device has the self-recovery function.

The invention discloses a special compound heat conducting powder for a heat conducting and insulating power cable protective casing, and a production process thereof. The power comprises the following components in percentage by weight according to the formula: 40-60 percent of alumina of different particle sizes, 5-25 percent of nano silicon carbide, 3-15 percent of nano aluminum nitride, 2-12 percent of nano zinc oxide, 1-10 percent of nano nano magnesia, 4-10 percent of nano silicon nitride, and 1-8 percent of nano boron nitride. The production process is that the components are subjected to surface actification processing and then to compounding. The formula has the main characteristics that the raw materials are easy to obtain, the produced compound heat conducting powder is high in thermal conduction, and the additional amount is small. The formula adopted by the invention can be applied to heat dissipation protective casings for various buried construction cables.

Nowadays in aircraft so-called on-board inert gas generation systems (OBIGGS) are used to generate inert gases, to which OBIGGS cooled bleed air of engines or auxiliary power units is fed. According to an embodiment of the present invention, an air-cooling device for an OBIGGS system in an aircraft is proposed that comprise a bleed position (1). By way of the bleed position (1), cooling air from an air conditioning unit (4) on board the aircraft can be bled, which cooling air can subsequently be used for cooling supply air (18) for the OBIGGS system. Thus, there is no need for an additionalram-air inlet channel for cooling the supply air. Air resistance and weight are thus reduced, and the stability of the primary structure is enhanced.

An L.E.D. light emitting assembly (20) includes a heat sink (50) defined by independent elongated sections (52) upwardly from a base (26) in parallel relationship. L.E.D.s (72) are disposed on a mounting surface (60) and fins (64) are disposed on a heat transfer surface (62) of the elongated sections (52). The elongated sections (52) and base (26) are pivotably connected at a hinge (86). The hinge (86) can include a spring (102). A spreader (90) can pivot the elongated sections (52) about the hinge (86). A flexible stop (106) with a resilient tip (110) is attached to top ends (58) of the elongated sections (52). The elongated sections (52) are held together by a retainer (88), such as a band (104), and inserted through a narrow opening (22) of a globe (24). A deployment mechanism (84) moves the elongated sections (52) to a non-parallel position to fill the globe (24).

A buffered optical fibre includes an optical waveguide, at least one exterior coating surrounding the optical waveguide and a buffer coating surrounding the at least one exterior coating, wherein the buffer coating is a tight buffer coating made of a material having a density of at least about 1.2 Kg/dm³, a thermal conductivity of at least about 0.4 W/m·K and includes a polymeric matrix and an inorganic filler.

The invention discloses a heat-shrinkable heat-conducting cable accessory, comprising the following components in parts by weight: 100 parts of ethylene and copolymer thereof, 0-25 parts of fire retardant, 0-80 parts of packing, 0.5-2.5 parts of light stabilizer, 0-6 parts of antioxidant, 1.5-6 parts of lubricating agent, 0-10 parts of coloring agent, 1-8 parts of coupling agent, 0-10 parts of modifier, 0-5 parts of crosslinking agent and 1-30 parts of heat-conducting material. The heat-shrinkable heat-conducting cable accessory disclosed by the invention has good thermal conductivity and insulativity, especially the campsite heat-conducting material and other components such as ethylene and the copolymer thereof and the like are stacked to form a cross network, so that effective heat conduction can be carried out, the heat-conducting coefficient can be up to 3.305-4.867w/m.k, the volume resistivity can be ensured at 10<15>ohm*cm, the insulating effect of the cable accessory is ensured, and the heat-conducting effect of the cable accessory can also be ensured, so as to ensure normal operation of the cable.

A resin board is fixed to a plate member made of metal by a fixing member. A semi-conductor module and a capacitor are mounted on a first surface of the resin board. A first ground pattern is formed on the fist surface and electrically connected to the plate member by means of the fixing member. A connector is also provided on the first surface such that the first ground pattern is interposed between the semi-conductor module and the connector. The heat from the semi-conductor module and the capacitor is transmitted to the plate member via the first ground pattern and the fixing member.

Optical assemblies of the type supported on an optical bench and comprising a one or more components such as lasers, lenses, filters, isolators and waveguides, are sensitive to movement variation. One of the causes of movement is temperature tracking. Previously, thermo-electric coolers have been used to maintain the top-surface temperature of an optical bench within a certain range. However, although thermo-electric coolers are operable to maintain optical bench temperature they are themselves still sensitive to temperature tracking and can deform. Because an optical bench is typically supported on the top surface of a thermo-electric cooler this leads to deformation of the optical bench itself and as a result performance of the optical assembly is affected. An improved design of thermo-electric cooler is described where the top surface of the cooler is divided into separate regions, each having a neutral region in which deformation is minimal. A thermally conductive sheet is placed over each of these regions such that only one temperature monitor is required. Optical components are then supported over the thermally conductive sheet in the neutral regions.

The invention discloses chemical industry waste gas treatment equipment, which comprises a box body, wherein the lower end of the left side of the box body is provided with a gas inlet pipe; a filtering cavity is arranged at the right side of the gas inlet pipe; a first connecting pipe is arranged at the upper side of the filtering cavity; a burning cavity is arranged at the upper side of the first connecting pipe; a second connecting pipe is arranged at the right side of the burning cavity; a condensation cavity is arranged at the left side of the upper end of the second connecting pipe; the left end and the right end of the upper side of the condensation cavity are provided with circulation pipes; a water storage cavity is arranged at the upper side of each circulation pipe; an acid alkaline detector is arranged at the right side of the condensation cavity; each of the left side and the right side of the lower end of the second connecting pipe is provided with a third connecting pipe; the lower sides of the third connecting pipes are respectively provided with an acid solution storage cavity and an alkaline solution storage cavity; the upper side of each of the acid solution storage cavity and the alkaline solution storage cavity is provided with a gas outlet pipe; the upper sides of the gas outlet pipes are connected with a fourth connecting pipe; the right side of the fourth connecting pipe is provided with a purification cavity; the upper side of the purification cavity is provided with an exhaust pipe. The chemical industry waste gas treatment equipment has the advantages that various kinds of harmful gases and suspended particles in waste gas can be effectively removed, so that the cleanness of exhausted gas is ensured.

The invention relates to an automatic high-efficiency energy-saving purification system for industrial volatilizable organic pollutants, which is characterized in that: (1) both opposite side walls of an active carbon bed body of an adsorption bed are set into side walls with hollow structures, an active carbon clapboard is set into an active carbon clapboard with a hollow structure, the active carbon clapboard with the hollow structure is communicated with the side walls with the hollow structures, and the two side walls with the hollow structures are respectively provided with a hot air inlet and a hot air outlet; and (2) a catalytic combustion bed is connected with a plate-type heat exchanger, and the plate-type heat exchanger is connected with the hot air inlets on the side walls withthe hollow structures of the adsorption bed through an adsorption bed heating fan. The automatic high-efficiency energy-saving purification system for the for industrial volatilizable organic pollutants has a simple and reasonable structure, can effectively reduce energy consumption, improve the purifying rate, prolong the service life of a catalyst, shorten the desorption process time, improve the purifying efficiency and reduce the operating cost, and is safe and reliable.

The invention relates to a supported iron-based Fischer-Tropsch catalyst. The supported iron-based Fischer-Tropsch catalyst contains a spherical mesoporous carbon support, an active component iron located on the support and an optional catalyst promoter, wherein the specific surface area of the spherical mesoporous carbon support is 500-1000 m<2>/g, pore volume is 1.5-3.5 cm<3>/g, and average porediameter is 9-30 nm. According to the catalyst, spherical mesoporous carbon with high pore volume and large pore diameter is taken as the support, not only can high loading capacity of iron be realized, but also when the prepared catalyst is applied to the Fischer-Tropsch reaction, high Fischer-Tropsch reactivity and high productivity can be obtained, and particularly, CO conversion rate is remarkably increased and hydrocarbon productivity is improved. The invention further relates to preparation of the catalyst and an application of the catalyst to the Fischer-Tropsch reaction.

The invention discloses a water-cooled shock absorber. The water-cooled shock absorber comprises a shock absorber body and a water jacket which is arranged outside the shock absorber body, wherein a water inlet and a water outlet are formed in the water jacket. According to the water-cooled shock absorber, the water jacket allowing water flow to pass is arranged outside the cylindrical wall of the shock absorber body, heat of the high-temperature shock absorber body is transmitted to low-temperature water in the water jacket through heat transmission conducted when the low-temperature water flows through the water jacket, heat is taken away through the circulating flowing of the water, in this way, effective cooling of the shock absorber is achieved effectively, the shock absorber operates in a good working condition, carbonization of oil in the shock absorber or volume expansion of the shock absorber is avoided, the occurrence rate of accidents such as oil leakage is reduced, and the service life of the shock absorber is effectively prolonged.

An apparatus for enhancing heat transfer efficiency of an endothermic/exothermic article includes a heat sink disposed on the endothermic/exothermic article to enhance heat transmission, a plurality of fins formed on the heat sink to enhance heat exchange, and a porous medium disposed on the fins to increase cooling efficiency of the endothermic/exothermic article by air flowing between gaps between the fins and the porous medium.

Optical axes are simultaneously adjusted when a plurality of lighting device units 30, the light sources of which are light emitting elements 34, are tiltably supported by the common unit support member 20. In this case, the positioning recess portion 20 d is provided which is composed so that the light source fixing portion 20 B 1 formed in a plurality of portions of the unit support member 20 can be contacted with the back face 42 a and the outer circumferential face 42 b of the support plate 42 for supporting the light emitting element 34. Due to the foregoing, the light emitting element 34 can be highly accurately attached to the unit support member 20, and the optical axes A_x, of the lighting device units 30 can be put in order.

The invention discloses an air cooling structure of an outer rotor electric roller. The air cooling structure comprises a fixed seat (27), an end cover assembly and a stator assembly, the stator assembly comprises a stator sleeve (1), an axial rib plate (4), an air deflector structure, a bearing pedestal (3), a main shaft (9) and a stator coil iron core assembly (12). The air deflector structure is connected with the axial rib plate (4) and the main shaft (9); the axial rib plate (4) is connected with the bearing seat (3), the stator sleeve (1) and the main shaft (9); air inlet and outlet ducts are distributed on the fixed seat (27); air inlets and outlets are distributed in the end cover assembly; a ventilating duct is formed outside a shaft among the stator sleeve (1), the air deflectorstructure and the axial rib plate (4); the fan at one end of the main shaft (9) sends cooling air flow into the ventilating duct through a fixing base (27) and the end cover assembly to cool a statoriron core, and then through the ventilating duct outside the shaft, the flow of the cooling air entering the stator is increased, the heat dissipation effect is enhanced, and therefore the service life of the electric roller is effectively prolonged.

The invention discloses a modified hydrocarbon resin prepolymer, a modified hydrocarbon-DCPD epoxy composite material copper-clad plate and a preparation method thereof. The modified hydrocarbon resinprepolymer is prepared by mixing and reacting 50-200 parts by mass of hydrocarbon resin, 50 parts by mass of a resin mixture containing double-bond benzoxazine resin/modified polyphenyl ether resin,1-5 parts by mass of an initiator A and 110-280 parts by mass of a solvent A through a micro-channel reactor and removing part of the solvent. The modified hydrocarbon-DCPD epoxy composite material copper-clad plate is prepared by thermally curing a composition and a copper foil, wherein the mass ratio of a modified hydrocarbon resin prepolymer to DCPD epoxy resin to an inorganic filler to an initiator B to an accelerant A to a reinforcing material is 90: (10-30): (40-100): (0.01-1): (0.01-1): (70-200); the ceramic has the characteristics of low dielectric constant, low dielectric loss, low water absorption, high glass-transition temperature and high peel strength.