785results about How to "Reduce temperature rise" patented technology

An adjustably opaque window including an external pane, an internal pane, a light transmission control layer and a shock-absorbing layer is provided. The external pane and the internal pane provide a cavity between them, and the light transmission control layer and the shock-absorbing layer are positioned in the cavity. The shock-absorbing layer is a flexible sheet that supports and protects the light transmission control layer. The light transmission layer consists of liquid crystal cells. The transmission ratio of the cells can be controlled variably.

A light-emitting device (200) has a submount (100) and a plate for heat transfer (300) having a metallic plate (30). The submount (100) has a mount base (10), at least one light-emitting diode chip (5) mounted thereon and electrically conducting lines (12-17) formed on the mount base (10) to be connected electrically to the light-emitting diode chip (5). A first plane (11) of the mount base (10) of the submount (100) is bonded thermally to the first plate (300). For example, the plate is a circuit board having a metallic plate (30), and the submount (100) is bonded thermally to the metallic plate (30) of the one of the at least one plate (300). In an example, a second plate for heat transfer is also bonded thermally to a second plane of the mount base (100) for providing a plurality of heat transfer paths.

The electronic component package (10) of the present invention includes a sealed chamber; a liquid or gel (20) contained in the sealed chamber; at least one electronic component (12) disposed in the sealed chamber in physical and thermal contact with the liquid or gel (20); and at least one electrical conductor electrically coupled to the electronic component and extending out of the sealed chamber. The electronic component(s) (12) may include any one or combination of a radiation emitter, a thermal or optical sensor, a resistor, and a microprocessor or other semiconductor component.

An overbased, sulfurized salt of at least one alkylated hydroxyaromatic compound, wherein the alkyl substituent of the hydroxyaromatic compound is a residue of at least one isomerized olefin having from about 15 to about 99 wt. % branching is disclosed. The overbased, sulfurized salt of at least one alkylated hydroxyaromatic compound is produced by the process comprising: (a) alkylating at least one hydroxyaromatic compound with at least one isomerized olefin having from about 15 to about 99 wt. % branching obtained by isomerizing at least one normal alpha olefin having from about 10 to about 40 carbon atoms, to provide at least one alkylated hydroxyaromatic compound; (b) neutralizing and sulfurizing the alkylated hydroxyaromatic compound in any order to provide at least one neutralized, sulfurized alkylated hydroxyaromatic compound; and (c) overbasing the at least one neutralized, sulfurized alkylated hydroxyaromatic compound.

The present invention suppresses temperature rise of an optical near-field generator while increasing optical near-field intensity in a thermally assisted magnetic recording head using a conductive scatterer as the optical near-field generator. The present invention uses a conductive scatterer having a cross-sectional shape in which its width is gradually reduced toward an apex where an optical near-field is generated, and also has a shape in which its width is reduced gradually or in a stepwise fashion toward the apex where the optical near-field is generated in a traveling direction of incident light.

A fuel cell system and related method are disclosed having a system controller 37 that executes enthalpy calculation based on status signals, related to anode off-gas and cathode off-gas, detected by a temperature detector 29, a pressure detector 30 and a humidity detector 31 for thereby predicting a combustion temperature of a combustor 7 during purging. In the presence of a predicted combustion temperature exceeding an upper limit, cathode off-gas is increased in volume to limit a combustion temperature of the combustor 7 to a value below the upper limit value.

In a widthwise direction of a heating roller perpendicular to a sheet conveyance direction, an amount of magnetic flux acting on the heating roller in the neighborhood of an end portion of the heating roller is larger than that at a center portion of the eating roller, so that it is possible to prevent a lowering in temperature at the heating roller end portion. Further, in a temperature range in which a temperature of the heating roller is higher than a fixation temperature and is lower than a heat-resistant temperature of a heating apparatus, the heating roller has a temperature area in which a resistance thereof is lowered, so that it is possible to reduce temperature rise in a differential area between a large-sized sheet passing area and a small-sized sheet passing area when a sheet having a size smaller than a maximum size (non-sheet passing portion temperature rise).

The invention relates to a method for enhancing the running period of a poor-quality naphtha hydrogenising device. The invention adopts the method that a reactor is additionally arranged before a heating furnace, and the poor-quality naphtha first performs a selective diene hydrogenising and removing organosilicon compounds reaction at a lower reaction temperature, and then passes through a main reactor and performs a hydrogenising reaction to remove sulphur and nitrogen impurity and olefin saturation. Compared with the prior art, the method has the advantages that the process is simple, the heating furnace tube and the heat exchanger shell side coking are effectively alleviated and the organosilicon compounds are removed, and the running period of the device is prolonged. The method can be applied to various secondary processing naphtha hydrofining processes.

Biofuel compositions obtained by the simultaneous hydroprocessing of at least two distinct hydroprocessing feedstocks, either or both of which are derived from biomass, are disclosed. The co-processing of these feedstocks can result in an upgraded product having suitable characteristics, in terms of composition (e.g., quantities of compounds such as aromatic hydrocarbons, present in relatively large amounts) and in terms of quality (e.g., quantities of compounds such as oxygenates, present in relatively small amounts) for use as a hydroprocessed biofuel such as hydroprocessed aviation biofuel.

The invention discloses a high heat-conductivity epoxy casting material for a dry power transformer and a preparation method thereof. Instead of silicon powder used in the prior art, the high heat-conductivity inorganic powder is used as padding, so that the coefficient of heat conductivity of the casting material is increased. The invention is characterized in that: 1) a toughening agent with higher hydroxyl content is selected, so that the impact resistance and the toughness of cured matters are improved while the acting force between the inorganic powder and the substrate resin molecules is increased; and 2) the formula of the casting material and the technical measures, such as a rubber mixing and de-foaming technology, are optimized, so that the easily sinking phenomenon of the high heat-conductivity inorganic powder caused by higher density is eliminated. The coefficient of heat conductivity of the obtained high heat-conductivity epoxy casting material can reach 1.1-1.3W/(m K); the impact resistance can reach 14-22kJ/m<2>; the difference between the density of the upper part of a workpiece and the density of the lower part of the workpiece is not more than +/-0.5%; the bending strength is 120-140MPa; the coefficient of linear expansion is 30-50*10<-6>K<-1>; the thermal deformation temperature is 105-120 DEG C; and the breakdown field strength is 26-30kV/mm.

The invention relates to a rotor of a high-quality and high-speed built-in permanent magnet motor and a magnetic steel structural parameter determining method thereof. In the invention, the whole section magnetic steel of each electrode of the rotor of a conventional built-in permanent magnet motor is divided into multiple sections of magnetic steel which have the same polarity and different widths; the multiple sections of the magnetic steel are respectively arranged in a rotor core; and reinforcing ribs with the function of magnetic isolation are arranged among the multiple sections of the magnetic steel. By reasonably modulating and determining the width and distribution of each section of the magnetic steel, the air gap magnetic density waveform approaches sine distribution; harmonic components are reduced to the greatest extent; the eddy current loss of the magnetic steel and the torque pulsation of the motor are simultaneously reduced; and the electromagnetic performance of the motor is enhanced. Furthermore, the multiple sections of the magnetic steel are arranged in the circumference along the rotor; the highest rotating speed of the safe operation of the rotor is greatly enhanced on machinery; the radial thickness which is needed by the magnetic circuit of the rotor is obviously reduced on the structure; the rotational inertia and weight of the rotor are reduced; the dynamic response of the motor is improved; and the requirements of a high-speed driving system on the performance of the motor are met.

The present invention provides a liquid crystal display device and a light source device, wherein the light source device is provided with a backlight source and a heat dissipation substrate for transferring the heat from the backlight source. The backlight source comprises the following components: a light conducting plate, an LED light source configured on the end plane of light conducting plate; and an installation substrate which is installed with the LED light source and has insulation property. A heat-conducting elastic sheet is provided between the installation substrate and the heat dissipation substrate.

The invention discloses a vehicle auxiliary braking control method which comprises the steps that an accelerator pedal signal and a brake pedal signal of a vehicle are obtained; the state of an accelerator pedal and the state of a brake pedal are judged according to the accelerator pedal signal and the brake pedal signal; if the accelerator pedal is in a loose state and the brake pedal is in a depressing state, the current speed is further detected for the vehicle; if the current speed of the vehicle is larger than a preset speed, the opening size of an exhaust valve of a vehicle engine is adjusted, so that auxiliary braking is conducted on the vehicle through the engine. According to the embodiment of the vehicle auxiliary braking control method, frequent use of a brake disc for braking can be reduced, the safety of the vehicle in driving is improved, and the service life of the brake is effectively prolonged. The invention further discloses a vehicle auxiliary braking control system and a vehicle including the same.

A multilayer electrode battery which restrains temperature rise produced by an internal short circuit and has a compact size and a large battery capacity. The battery is a multilayer electrode battery which uses an electrode formed by providing positive temperature coefficient characteristics to at least one of an active material and an electronic conductive material in contact with the active material, and a collector of at least one of a positive electrode and a negative electrode, and which has a plurality of layers of multilayer electrode bodies.

The invention discloses a non-bridge APFC active factor power correction circuit which comprises an AC positive half cycle APFC circuit, an AC negative half cycle APFC circuit, and an AC filter circuit, wherein the AC positive half cycle APFC circuit comprises a first inductor, a first switch tube, a positive half cycle first diode, a positive half cycle second diode, a first capacitor, a first PFC controller and a first DC-DC converter as a load, and the AC negative half cycle APFC circuit comprises a second inductor, a second switch tube, a negative half cycle first diode, a negative half cycle second diode, a second inductor, a second PFC controller and a second DC-DC converter as a load. Compared with conventional non-bridge APFC circuit, the non-bridge APFC active factor power correction circuit has lower loss, and smaller electromagnetic interference.

The invention discloses an energy saver for an AC contactor, which comprises a half-wave rectification circuit, a square-wave generation circuit, a DC voltage-regulated power supply circuit, a signal converter and a charge/discharge circuit. The half-wave rectification circuit is used for half-wave rectification of mains power, the square-wave generation circuit is used for providing square-wave input for the signal converter, the DC voltage-regulated power supply circuit is used for providing a stable DC power supply for the signal converter, the signal output end of the signal converter is used for providing a control signal for the charge/discharge circuit, and the load of the charge/discharge circuit is an AC contactor. The current of the coil of the AC contactor can be changed through changing the pulse width of the output end of the signal converter, thereby realizing that the high current can flow through the coil of the AC contactor when the contacts of the AC contactor are closed, and the low current can flow through the coil of the AC contactor when the closed state of the contacts of the AC contactor is maintained. Therefore, the invention realizes the energy-saving operation of the AC contactor, reduces the noise and the temperature rise of the coil of the AC contactor, and prolongs the service life of the AC contactor.

A permanent magnet type generator includes a rotor having 4n (n is a positive integer) permanent magnet poles disposed in a circumferential direction of the rotor to have circumferential gap between adjoining poles and a stator that has 3n teeth and coils wound around the teeth. The stator core includes a pair of core end plates and a laminate core disposed between the core end plates. Each core end plate has a circumferential width that relates to the gap distance at portions opposite the permanent magnet poles.

A canned linear motor armature and a canned linear motor of water cooling type are provided. The insulation reliability of a canned linear motor armature is improved. The temperature rises of both the linear motor surface and the armature winding are reduced. Even if the coolant pressure increases, the can neither breaks nor deforms. The weight of the armature is lightened. The viscosity braking force is reduced. In the canned linear motor armature, the armature winding (104) is surrounded with a picture-frame-shaped case (111), both the openings of the case (111) are closed with flat can (121), and coolant passages (131) are provided inside the can (121) and on the top surface of the coil side of the armature winding (104).

The invention relates to a mixed type driving and driven magnetic suspension bearing, which solves the problems of large volume, heavy weight and high temperature rise of the conventional magnetic suspension bearing. Two circular ring-like rotor permanent magnets are sleeved on an outer surface of a rotor magnetically-conductive yoke cylinder along axial direction; an inner surface of a stator iron core is grooved along the axial direction to form 4n stator teeth; two tile-shaped stator permanent magnets are fixedly adhered to the inner surfaces of the first, third, ..., and (4n-1)th stator teeth along the axial direction; the position of each stator permanent magnet corresponds to that of one of the circular ring-like rotor permanent magnets; the second, fourth, ..., and 4nth stator teeth are armature teeth in a double-teeth structure; a coil is wound on each tooth in the double-teeth structure; the coils on all armature teeth are connected in series to form a radial force control winding; and two coils on two teeth which are opposite by 180 degrees in circumference are connected in series in reverse direction to form a set of windings. By the invention, the dynamic response of the bearing is improved.

The invention relates to a copper bus bar with high strength, high conductivity and high toughness and a preparation method thereof. The copper bus bar is characterized in that the material comprises 99.96-99.998% of copper and silver, 0.002-0.02% of yttrium rare earth and 0-0.038% of impurities, wherein silver accounts for 0.0005-0.01% of copper and silver; and the copper master alloy containing the yttrium rare earth is used as a modifier. The preparation method comprises the following steps: (1) melting a copper material: heating the cathode copper in a mains frequency core induction furnace to melt the cathode copper into liquid cathode copper; (2) modifying liquid copper: melting the modifier in the liquid cathode copper and fully mixing the modifier with the liquid cathode copper; (3) drawing a continuously cast copper bar upwards: causing a crystallizer of a continuous casting machine to stretch into the liquid cathode copper, condensing the liquid cathode copper into the copper bar in the crystallizer and drawing the copper bar upwards by means of two pairs of drawing roll mechanisms in the continuous casting machine to lead the copper bar to a take-up machine via a wheel frame; (4) continuously extruding the copper bar at medium temperature and carrying out anti-oxidation cooling; and (5) carrying out draw forming: putting copper bus bar blanks on a drawing machine, carrying out draw forming on the copper bus bar blanks.

The present invention relates to an oil-immersed waterproof submerged pump. A rotor and a stator coil wound with waterproof wires are arranged in the housing cavity of a submerged motor; insulating oil is used as the cooling medium of the housing cavity; a rear bearing and a bearing cover are mounted on the rear end of a motor shaft; a lead-out wire tube, which can lead out a lead-out wire, is mounted on a base; a housing, the base and a front cover close the housing cavity; a front bearing and a mechanical seal, which are fastened in the central hole of the front cover, are mounted in the middle part of the motor shaft; water fills up a sealing chamber; a submerged pump vane wheel is mounted on the front end of the motor shaft; a pump seat is mounted on the front end of the sealing chamber; a pump cover is mounted on the front end of the pump seat; the pump cover is provided with a water inlet; a filtering net is mounted on the front end of the pump cover; a water outlet is arranged on a submerged pump body. The oil-immersed waterproof submerged pump has the advantages that: the temperature raise of the motor is reduced, and the power of the motor is increased; the service life of the motor is increased; the service life of a bearing is prolonged; water source is prevented from being polluted; the oil-immersed waterproof submerged pump can be used in dirty water.

The invention discloses a hydrotreating method of product circulation. One part of circulation of a hydrotreated liquid phase product is mixed with a raw material into a liquid phase material, and the liquid phase material enters the upper part of a reactor. The hydrotreating method of product circulation is characterized in that the upper part of the reactor is provided with at least one air-lift tray of which the lower part is introduced with hydrogen; the hydrogen and the liquid phase material contact on the air-lift tray for the air lift of hydrogen sulfide and ammonia in the liquid phase material; meanwhile, hydrogen is further dissolved in the liquid phase material; the air-lift liquid phase material enters a catalyst bed on the lower part of the reactor for hydrotreating reaction; and air-lift gas containing hydrogen sulfide and ammonia is discharged from the top of the reactor. The reactor adopted by the invention simultaneously has the action of catalytic hydrotreating reaction and the action on causing products H2S, NH3 and the like to be discharged out of a reaction system by air lift, thus greatly improving hydrotreating reaction efficiency and enhancing technology flexibility and raw material adaptability.

The invention provides a coal tar hydrogenation system and a coal tar hydrogenation method. The method comprises a hydrogenation refining reactor, a separation unit and a hydrogenation cracking reactor, wherein the hydrogenation refining reactor is an up-flow fixed bed reactor, the hydrogenation cracking reactor is a down-flow fixed bed reactor, and the separation unit is a middle liquid separation tank; gas-liquid separation is performed on raw oil and hydrogen after a hydrogenation refining reaction, a part of liquid-phase heavy fractions is separated, one path is used as circulating oil and returned to perform the hydrogenation refining reaction again, and the other path is used as quenching oil after being cooled and added between catalyst bed layers for the hydrogenation refining reaction to play a role of cooling; and the other part of the liquid-phase heavy fractions is used as refined generated oil and mixed with hydrogen to perform a hydrogenation cracking reaction, and the obtained reaction product is combined with gas-phase light fractions after the gas-liquid separation to form the final product. The system and the method provided by the invention are low in equipment cost, simple to operate, capable of prolonging the life of the catalysts of the hydrogenation refining reactor and the hydrogenation cracking reactor, and suitable for raw oil with worse conditions.

To provide an LED light source unit which is excellent in heat dissipation performance, able to prevent damage to LED and bright, and which has a long life.

An LED light source unit comprising a printed board, at least one light emitting diode provided on the printed board, and an adhesive tape for fixing the printed board on the surface of a heat dissipating member, wherein the thermal conductivity of the adhesive tape is from 1 to 4 W/mK, and the withstand voltage between the fixing face of the printed board and the fixing face of the heat dissipating member is at least 1.0 kV.

In a mounting area, a plurality of light-emitting elements are two-dimensionally mounted, and light-emitting elements are connected in series in each of light-emitting element blocks. The light-emitting element blocks) are connected in parallel by wires. The light-emitting element blocks located in a middle portion each include only blue light-emitting elements. On the other hand, the light-emitting elements located above the light-emitting element blocks and the light-emitting element blocks located below the light-emitting element blocks include one or more light-emitting element blocks each including not only blue light-emitting elements but also one or more red light-emitting elements.

The invention provides an internal and external cooling structure for high-speed motorized spindle. According to the structure, cooling water channels are additionally arranged on a casing of the motorized spindle and a front bearing pedestal of the motorized spindle, and a spiral cooling water channel is arranged in the spindle, so that all the main heating components such as a motor stator, a motor rotor, a front bearing and a back bearing of the motorized spindle can be efficiently cooled, therefore, the temperature rising of the motorized spindle is effectively controlled, the service life of a motor and the service life of bearings can be prolonged, and the machining precision and surface machining quality of the motorized spindle are greatly improved by virtue of the reduction of thermal deformation.

The invention provides an automatic reclosing lock device of a breaker. The automatic reclosing lock device comprises a drive motor, a linkage tripping mechanism, a transmission gear mechanism and a breaker handle mechanism, wherein the transmission gear mechanism comprises a first transmission gear, a second transmission gear and a third transmission gear which are adjacently meshed with one other, a cam portion of the second transmission gear can drive a push rod to shift a tripping rod, so as to quickly separate the breaker, the second transmission gear can drive an incomplete gear to rotate continuously, and the incomplete gear and the third transmission gear are in mesh transmission to drive a handle to switch on automatically through a linkage rotation shaft. The automatic reclosing lock device has the advantages of being reliable in transmission, strong in stability and capable of enabling the second transmission gear not to be prone to shaking or rising; thus, the automatic reclosing lock device can avoid the problem of tripping clamping stagnation or tripping slide when being matched with a linkage tripping part, the use performance of a product is favorably improved, and the service life of the product is favorably prolonged.

The invention discloses a manganese zinc ferrite with characteristics of high temperature, low power consumption and high overlaying, and a preparation method of the manganese zinc ferrite. The manganese zinc ferrite comprises ferric oxide, manganese oxide, zinc oxide, calcium carbonate, titanium oxide, cobaltous oxide, silicon oxide, chromic oxide, niobium oxide and vanadium oxide. The manganese zinc ferrite is prepared through the steps of material blending, preburning and crashing, sanding, preparation of granulation slurry, spray granulation, manufacturing of blanks, sintering and the like, and under the test condition of 100KHz 200mT, the power loss at the temperature of 100 DEG C is smaller than 260kw/m<3>, and the Bs at the temperature of 100 DEG C is larger than 420mT; a filter, a switch power source and a transformer application electronic product are partially made of magnetic materials, partial energy is consumed, and an electronic device which is wider in use field, smaller in size, more efficient and saving in energy can be provided for users, the use frequency of the materials is expanded, the loss is reduced, performance of components with magnetic cores applied can be improved largely, electronic products are made to be smaller and more efficient, and effective help is provided for adjustment of the national industrial structure, energy conservation and emission reduction.

The invention discloses a drawer-type microwave oven which comprises an outer cover, a cavity part, a microwave generating device, an air drive part and an air cooling passage, wherein the cavity part is embedded in the outer cover, the front side is open, the cavity part comprises a cavity front plate, an air outlet is formed in the upper part of the cavity front plate, and an air inlet is formed in the lower part of the cavity front plate; and the air cooling passage is formed in space between the outer cover and the cavity part embedded in the outer cover. According to the drawer-type microwave oven, through a design of the air cooling passage between the cavity part and the outer cover, temperature rising of components during a use process of the drawer-type microwave oven is reduced, so that the service life of each component in the drawer-type microwave oven is prolonged.

The present invention relates to a cooling structure for motor of fan, which includes a housing, an impeller and a circuit board. The housing has an air flow channel and a base; the base is located on one side of the air flow channel to support the circuit board, and the impeller is movably integrated on the base; the circuit board is bonded with a highly heat-conductive metal on at least one side thereof so as to provide good heat dissipation and heat transfer performance; at least one portion of the circuit board is extended beyond the hub of the impeller such that the extended portion is located at a downwind place of the blades of the impeller to facilitate fast heat dissipation.