146results about How to "Increase the effective cooling area" patented technology

The invention discloses a floating member used for a waterborne photovoltaic power station and a connection method thereof. The floating member at least comprises a floating member body which can be floated on water. The floating member body comprises a first end part and a second end part. Height of the upper surface of the first end part is lower than that of the upper surface of the second end part. The upper surface of the floating member body, which is close to the first end part, is provided with a first connection structure which is used for being detachably connected with the first connection piece of the back surface of a photovoltaic panel. The upper surface of the floating member body, which is close to the second end part, is provided with a second connection structure which is used for being detachably connected with the second connection piece of the back surface of the photovoltaic panel. Height of the upper surface of the first end part of the floating member body is set to be higher than that of the upper surface of the second end part, and the connection structures connected with the photovoltaic panel are directly arranged on the upper surface of the floating member body so that the installing technology of the photovoltaic power station can be greatly simplified, installing time can be saved and installing cost can be reduced.

A connector housing heat radiation structure comprises a housing, a heat radiating plate and a buckling member. The first end of the buckling member is buckled and fixed with the top plate of the housing by means of a first tongue plate and a buckling plate, thereby reducing area of an opening on the top plate, and realizing relatively high EMI shielding effect. Two connecting arms of the buckling member penetrate through grooves in the heat radiating plate. Width of the heat radiation plate is not limited, and heat radiation area of the heat radiating plate can be increased. The second end of the buckling member is provided with a second tongue plate which is inserted into a bump at the back cover of the housing. Furthermore through making the abutting end of the second end abut against a backstop part, no easy loosening of the buckling member is realized. The buckling cannot be damaged in bearing pressing by a certain external force.

An intelligent, self-protected control module which is a fully protected and configured as a multi-terminal device controlling a number of power field-effect transistors for delivering power to loads. The device can contain a central processing unit or logic, precision Hall-Effect based current sensors for precise measuring of bypass currents, temperature sensors, and input / output circuitry as well as an optional RF receiver. The inputs can incorporate de-bouncing techniques to prevent false turn on / off. Inputs can provide command signals for the processor or logic with built-in watchdog circuitry to monitor the input power supply. The CPU or logic can provide communications with external devices, generate alarms, generate control signals to turn-on / turn-off power MOSFETs, and analyze currents and temperature of each channel. Unlike an electromechanical relay, the present invention is free from arcing and sparking, there are no contact materials to wear, and it is noiseless. The present invention provides over-current protection by shutting down a troubled channel if it is overloaded. It provides protection to the load by limiting the bypass current to the preset value, or shutting the channel off in a case of over-current. The present invention provides over-temperature protection by shutting down an appropriate channel if any of the MOSFET's temperature reaches a predetermined value. The present invention can generate an output signal that is capable of driving an external indicator lamp if a problem has occurred. An optional RF receiver designed to receive a coded signal from a key-chain transmitter can provide a method of enabling the module to accept a control signal from the input remotely.

A rotor and a stator are contained in a housing composed of front and rear frames, and a rectifier is mounted on the rear frame and covered with a rear cover having axial and radial openings. A minus heatsink plate having cooling fins extending in the axial direction is disposed to face the radial openings, forming radial air passages, and another air passage is formed between the minus heatsink plate and the rear frame. Cooling air introduced from the radial openings flows through the cooling fins and through the passage between the minus heatsink plate and the rear frame. Thus, efficiency for cooling the rectifier is enhanced.

A rotor and a stator are contained in a housing composed of front and rear frames, and a rectifier is mounted on the rear frame and covered with a rear cover having axial and radial openings. A minus heatsink plate having cooling fins extending in the axial direction is disposed to face the radial openings, forming radial air passages, and another air passage is formed between the minus heatsink plate and the rear frame. Cooling air introduced from the radial openings flows through the cooling fins and through the passage between the minus heatsink plate and the rear frame. Thus, efficiency for cooling the rectifier is enhanced.

The invention relates to a method for continuously synthesizing ethyl 4-chloroacetoacetates. The method comprises the following steps: pumping a cooled diketene solution into a falling film reactor through a metering pump, and enabling the cooled diketene solution to uniformly form a film through a distributor, and flow into the reactor from a tower top; meanwhile, controlling the flow of chlorine gas through a gas flow meter; introducing the chlorine gas into the reactor through a gas distributor; carrying out a reaction on the diketene and the chlorine gas on the surface of the falling film reactor; after the reaction is finished, enabling reaction liquid to flow out from a tower bottom and enter an esterification reaction kettle; pumping in different alcohols and overflowing into a next esterification reaction kettle to continually react; absorbing hydrogen chloride gas, which is generated in a reaction process, with water; after the reaction is finished, washing with water and neutralizing to remove the residual hydrogen chloride; distilling an organic phase to recycle a solvent and excessive alcohol raw materials to obtain a crude product; rectifying the crude product to obtain an ethyl 4-chloroacetoacetates product. With the adoption of the method, reaction time can be shortened, energy consumption is reduced, polychlorides are controlled, reaction selectivity is improved, rectification is relatively easy, and yield and purity of the product are improved.

A parallel-connected LED illuminant, including: a parallel-connected bracket, LED light emitting unit groups, and fluorescent powder layers. The parallel-connected bracket includes two or more than two linear substrate monomers. The linear substrate monomers are disposed in parallel. Each of the LED light emitting unit groups is disposed in the straight line on each of the linear substrate monomers along the long axis thereof. The LED illuminant is connected in series with electrode pins disposed at two ends of the parallel-connected bracket. The surface of each linear substrate monomer where each LED light emitting unit group is disposed is coated with each of the fluorescent powder layers.

The invention relates to the field of semiconductor illumination, in particular to an LED streetlamp comprising an LED light emitting module, a panel shell and a bottom shell, wherein the panel shell is provided with a light outlet and the LED light emitting module is arranged in a cavity defined by the panel shell and the bottom shell. The LED streetlamp is characterized by also comprising an optical cover plate which is arranged in the light outlet of the cavity, and further comprising a radiating module which is arranged in the cavity; the LED light emitting module is connected with the radiating module; and the bottom shell is provided with radiating holes. The invention provides an LED streetlamp with favorable radiating effect.

The present invention provides an energy storage system, particularly a battery system, that is capable of preventing self from overheating, comprising at least one energy storage unit each having two terminal posts extending outwards from the interior thereof; when there are at least two energy storage units, electrical connection therebetween is achieved by electrical connection elements that bridge the terminal posts of different energy storage units; at least one of the terminal posts and / or the electrical connection elements is in thermal connection with a heat transfer surface enlarging structure made of solid heat conductive materials. The present invention further relates to a method for preventing overheat of an energy storage system.

A heat dissipating structure of accelerated graphics port (AGP) card, disposed at the AGP card for dissipating heat with respect to a certain chip therein, at least includes an extruded aluminum heat dissipating section and a fan. The invention is characterized that, at least one heat conducting pipe is disposed at a lower portion of the extruded aluminum heat dissipating section, and extended to a rear side of the AGP card; and thermal energy produced by the AGP card chip is conducted by the heat conducting pipes to cooling fins at the rear side of the AGP card, thereby increasing an effective heat dissipating area for enhancing heat dissipation effects.

The invention discloses a water-cooling type impact flour milling machine comprising a motor, wherein a motor shaft is fixedly connected with a rotor disc; a motor shell is connected with a shell through a flange disc; a shell cover plate is mounted on the upper end face of a shell; the bottom of the shell cover plate is fixedly connected with a stator disc; a stator part comprises the shell cover plate, the stator disc and a stator plunger pin; the stator part is provided with a heat radiation device and the heat radiation device comprises a cover plate water groove and a heat-conducting cushion plate; and the shell cover plate is provided with a cover plate of the cover plate water groove for covering the cover plate water groove. The water-cooling type impact flour milling machine disclosed by the invention can bring away heat by cooling water and air, so that the temperature of the cover plate and the shell can be reduced by about 20 DEG C, and the temperature raising of an impacted material is obviously descended. With the adoption of the water-cooling type impact flour milling machine, the quality of products produced by a production line is obviously improved and the edible quality of finished products is obviously improved. According to the water-cooling type impact flour milling machine, a hollow cavity which is arranged between the stator disc and the cover plate and can initiate resonance and amplify sounds can be reduced by more than 80%; and the cooling water has sound absorption effect, so that when the water-cooling type impact flour milling machine operates, the noise ratio is obviously reduced compared with the prior art.

The invention discloses a high heat-conduction ceramic heat-radiation nanocomposite material used for a LED lamp. The material takes bentonite, magnesium oxide, calcium carbonate, a MgAl2O4 / SSZ-13 nano material, polymerization modified phenolic resin, silica, boron nitride, hydroxymethyl cellulose, and methyl acrylate as main materials, a MgAl2O4 / SSZ-13 nano molecular sieve is subjected to coupling treatment, and then the organic modification of polyphenyl ether phenolic resin is carried out, the MgAl2O4 / SSZ-13 nano molecular sieve material can be employed for forming heat-radiation particles, the heat-radiation particles have high thermal conductivity and thermal diffusivity on radial and axial directions, so that the ceramic heat-radiation material having excellent performance is produced. According to the invention, the MgAl2O4 / SSZ-13 nano molecular sieve is subjected to coupling treatment, and then the organic modification of polyphenyl ether phenolic resin is carried out, and the prepared high heat-conduction ceramic heat-radiation nanocomposite material has excellent mechanical strength and heat-radiation performance.

The invention discloses a die cooling structure, which comprises a rear die core, wherein the rear die core comprises a protrusion for forming a concave part of a product; an accommodating cavity is formed in the protrusion; the die cooling structure also comprises a cooling insert inserted into the accommodating cavity; the inner surface and / or the outer surface of the cooling insert is provided with a water groove for cooling water to flow; and the core of the cooling insert is provided with a water channel. The rear die core can be quickly and uniformly cooled, phenomena that a product is bent, deformed, locally shrunk and the like due to nonuniform cooling of the rear die core are avoided, a product forming period is shortened, the injection molding cost is reduced and the product quality and production efficiency are improved.

The invention discloses a parallel flow integrated heat sink for superfine perforated pipes in a motor vehicle, which comprises an air-conditioning condenser, a water tank radiator and an engine oil cooler, wherein the water tank radiator and the engine oil cooler are arranged in parallel from side to side, separated by a heat-insulating layer, and positioned on the lower end of the air-conditioning condenser together; both ends of the air-conditioning condenser are provided with flow concentrating sections; a plurality of rows of the superfine perforated pipes are connected among the flow concentrating sections; wavy radiating fins are clamped between two rows of the superfine perforated pipes and respectively welded with one row of the superfine perforated pipes; a CO2 (R744) coolant gas-phase inlet pipe and a CO2 (R744) coolant gas-phase outlet pipe are respectively connected to the flow concentrating sections; and the flow concentrating sections on both ends are a plurality of sleeved structures capable of being arranged in the forward direction. The parallel flow integrated heat sink for the superfine perforated pipes in the motor vehicle integrates condensation of the prior vehicle air-conditioner, heat dissipation of a water tank and cooling of engine oil, is modularized, has light the overall mass and small occupied space, and adopts a multivariated parallel flow condenser and a segmented collecting pipe of the multivariated parallel flow condenser, so that refrigerant can flow to and fro for a plurality of times in the condenser and the heat exchange ability is strong.

The invention provides a self-frequency doubling laser with function of single beam laser output or linear laser output. The self-frequency doubling laser comprises pumping sources, an optical crystal, laser resonators and crystal cooling and temperature control devices with functions of heat dissipation and temperature control, wherein the two end faces of a slab of the self-frequency doubling crystal are optically polished and plated with high fundamental frequency laser and frequency doubling laser transmissive films; one surface of the slab-shaped self-frequency doubling crystal is placed on the first crystal cooling and temperature control device; the pumping sources at least aim at one surface of the self-frequency doubling crystal and enter; high pump light transmissive films are plated on the parts where the pump light enters; the pump light carries out pumping and is fully absorbed; and the fundamental frequency laser and the frequency doubling laser are ensured to be propagated in the crystal in the shape like a Chinese character yi or zhi, thus implementing single beam laser output or linear laser output. The laser provided by the invention has the following advantages: enlarging the effective cooling area of the crystal, being beneficial to efficient heat dissipation and accurate temperature control of the crystal, reducing the internal heat gradient of the crystal and ensuring the frequency doubling process to better meet the phase matching requirement. Besides, the laser can implement single beam laser output or linear laser output.

The invention discloses a frameless type electric reactor convenient to wind wire. The frameless type electric reactor comprises coils, an iron core, wrapped wire struts and wrapped wire positioning modules; the wrapped wire struts are uniformly distributed on the side surface of the iron core; the coils are wound on the outer wall of the wrapped wire struts; the wrapped wire positioning modules comprise positioning pieces and snap joint pieces; each positioning piece is provided by the a wire head groove and a wire tail groove; and the wire heads and the wire tails of the coils are separatelyplaced into the wire head grooves and the wire tail grooves and locked by the snap joint pieces. According to the frameless type electric reactor convenient to wind wire provided by the invention, the frame structure in the conventional electric reactor is removed, the coils are directly wound on the wrapped wire struts on the outer side of the iron core, so that gaps are reserved between the coils and the iron core so as to form heat dissipation air flues, the effective heat dissipation area of the coils is increased, and the thermal loads of the surfaces of the coils are reduced; the wrapped wire positioning module, so that the wire heads and the wire tails do not need to be manually bound and fixed during the winding process of the coil, the outgoing positions of the wire heads and thewire tails can be accurately controlled in product production, the consistency of the products is improved, and the production efficiency is improved.

The invention discloses an iron core structure of a distribution transformer special for an electric vehicle. A plurality of stacked iron core unit chips are arranged inside an iron core, are similar in shape and different in cross section area and are arranged in the axial direction of the iron core and wrapped with an insulation layer, the cross section of the iron core is of a long-circular structure, the insulation layer is also of a long-circular structure, and the insulation layer comprises arc segments and linear segments tangent to the arc segments. According to the iron core structure, a common iron core with a circular section is designed into the iron core with the long-circular section, and the material consumption of the iron core and the production cost are reduced on the basis that the effective section of the iron core is ensured. Linear air channels and stepped arc air channels are arranged among the iron core unit chips, so that the effective heat dissipation area of the iron core is increased, and the heat dissipation effect is enhanced; thus, the temperature rise of the iron core is relieved, the over-excitation running capability of the transformer is improved, and the service life of the transformer is prolonged.

The invention discloses a heating radiator which comprises a water body and cooling fins covering the water body. The water body comprises a water inlet pipe, a water outlet pipe and a water guide pipe; and the two ends of the water guide pipe communicate with the water inlet pipe and the water outlet pipe, and each cooling fin comprises a covering layer, a front cooling fin and a back cooling fin, wherein the covering layer covers the water body, the front cooling fin and the back cooling fin extend out from the covering layer, and the front cooling fin and the back cooling fin are oppositelyarranged to jointly form a semi-closed cooling cavity. The heating radiator has the advantages that the structure is simple, the cooling efficiency is high, the cooling effect is good, the weight issmall, the cost is low, and modeling is facilitated.

The invention discloses a composite copper bush for cooling. The composite copper bush comprises an outer copper bush, a horizontal high-heat-conductivity material layer and an inner copper bush which are laminated together closely and sequentially from outside to inside, the outer copper bush is prepared from chromium zirconium copper, and the outer copper bush is prepared from oxygen-free copper. The composite copper bush has high cooling efficiency, can improve performance of amorphous and nanocrystalline products, and can increase product percent of pass of amorphous and nanocrystalline belting equipment. The invention further discloses a preparation method of the composite copper bush.

The invention provides a construction method of an array type integrated magnetic piece of a multi-phase coupling inductor and the integrated inductor, and belongs to the technical field of inductors.The construction method comprises the following steps of: constructing a matrix structure , and arranging coupling magnetic core units in a matrix structure; constructing a matrix type integrated inductor based on the matrix structure; adopting multi-phase inductance symmetry full coupling or multi-phase inductance symmetry end-to-end sequential coupling to form a symmetrical integrated inductor.The construction method has the advantages that: direct-current magnetic bias can be eliminated, the coupling degree can be freely adjusted, and the number of integrated phases can be randomly expanded.

The invention discloses a turning / milling blade for machining a dead-hard steel special-shaped part. The blade comprises a blade body roughly in a right heptagonal shape. The blade body is provided with an upper surface, a lower surface and side faces; the geometric center of the blade body is provided with a fastening screw hole penetrating the upper surface and the lower surface, and the upper surface of the blade body and the crossing line of the side faces form a cutting part of the blade; the cutting part comprises a blade point located on the top corner of the right heptagon and cutting edges located on the side edges of the right heptagon; the cutting edges are sunken inwards in an arc shape to form fishtail-shaped cutting edges; the upper surface of the blade body extends inwards along the fishtail-shaped cutting edges to form a fishtail-shaped front blade face; and according to the structure, the problems that according to the profile manufacturing special-shaped face obtained after one-time postfire, the hardness of a workpiece is high, and it is required that wear resistance, blade breaking resistance, and structural precision of a tool are high, and the hard cutting performance of the tool is good are solved, and the technical problem that at present, one tool cannot meet the comprehensive machining requirement under the extreme condition is solved.

The invention provides a wind driven generator, and the wind driven generator comprises a rotor, a stator and an air gap located between the rotor and the stator. The stator comprises a stator coil and a stator core. The radial inner side of the stator iron core, a central part of the stator and an inner space formed by the enclosing of an end plate of the stator forms a cavity. The stator core isof a tooth slot structure, and the stator coil is located in a stator core trench. The wind driven generator further comprises a generator cooling device, and the generator cooling device comprises aventilation pipe, wherein the ventilation pipe is located between the stator iron core and the stator coil and adjacent to the stator coil and the stator iron core. According to the wind driven generator, the ventilation pipe is arranged at the bottom of the stator core trench and makes contact with the stator coil, thereby increasing the effective heat dissipation area of the stator, and reducing the pressure loss of gas flowing in the generator; compared with a traditional cooling mode, the generator improves the cooling effect, and the design that the ventilation pipe is located at the bottom of the stator core trench has low electromagnetic influence on the stator.