85results about How to "Speed up heat convection" patented technology

An LED lamp includes a heatsink housing, a heatsink plate mounted on the heatsink housing, an LED module mounted on the heatsink plate, and a circuit board mounted in the heatsink housing and electrically connected to the LED module. Thus, when the LED module is operated, the heat produced by the LED module is transferred by a heat conduction of the heatsink plate and by a heat convection between the heatsink plate and the heatsink housing, so that the heat produced by the LED module is carried away exactly and quickly, thereby enhancing the heat dissipation effect of the LED module.

An LED lamp includes a heatsink housing, a heatsink plate mounted on the heatsink housing, an LED module mounted on the heatsink plate, and a circuit board mounted in the heatsink housing and electrically connected to the LED module. Thus, when the LED module is operated, the heat produced by the LED module is transferred by a heat conduction of the heatsink plate and by a heat convection between the heatsink plate and the heatsink housing, so that the heat produced by the LED module is carried away exactly and quickly, thereby enhancing the heat dissipation effect of the LED module.

A heat sink (10) includes a circular base (20), a plurality of fins (30), and a central post (40). The base is adapted to be in thermal contact with an electronic device, to remove heat therefrom. The post extends from a top surface (26) of the base. The post has a first surface connected to the top surface and a second surface (44) dimensioned according to a heat sink fan to be attached thereon. The post also has a concave side surface (42) between the second surface of the post and the top surface of the base, for directing airflow. The fins are identical in height to the post. The fins are curved, aligned and spaced from each other at uniform intervals corresponding to directions of airflow generated from the fan. These minimize resistance to cooling air entering or exiting the heat sink.

A commutate silencer of a computer system is described. The commutate silencer of the computer system is installed at the back end of the computer system, and comprises a shield device, a commutate device and at least one partition. The shield device comprises a first shield and a second shield, in which the first shield comprises an opening, the first shield and the second shield construct a first cavity, and the first cavity includes a plurality of outlets. The commutate device comprises a frame and a plurality of commutate diversion plates, in which the frame construct a second cavity, the diversion plates traverse the second cavity, the second cavity has an inlet and a ventilated opening, and the ventilated opening is connected to the opening of the first shield. The at least one partition is located in the first cavity and the second cavity, so as to separate the inlet, the ventilated opening and the outlets into a plurality of sub-inlets, a plurality of sub-ventilated openings and a plurality of sub-outlets, respectively.

The present invention relates to a heat transfer tube with spiral groove, comprising a stainless steel tube body with inward convex spiral groove on surface, wherein the stainless steel tube body possesses unequal height and width in the cross sectional view. In the EGR (Exhaust Gas Recirculation) cooling system for automotive engine, such kind of spiral groove tube with the unequal height and width in the cross-section acting as the heat transfer tube for the cooler make the cooler gain higher heat transfer effect, and it is hard to make dirt deposited inside or outside the tube, which greatly improves the emissions performance for automotive engine, and satisfies higher requirement of environmental protection.

A high power LED has at least a porous material layer, a thermal conductive layer and a chip. The thermal conductive layer is disposed on the surface of the porous material layer and the chip is disposed on the thermal conductive layer. Heat generated by the chip is conducted from the thermal conductive layer to the porous material layer, and convected outside via the porous material layer. Thereby, surface area in contact with the air is increased and high thermal conductivity and high heat convection are also achieved.

A strip heatsink has a base, multiple dissipating strips and a fastening loop. The strip heatsink uses a row of the dissipating strips to replace one conventional fin, and a shape of the strip part of each dissipating strip is circular. Therefore a whole surface area of the row of the dissipating strips is much bigger. Besides, because a cross section area of the mounting part is bigger than a cross section area of the strip part in a dissipating strip, the strip parts of the dissipating strips are mounted separately, and the blocking of the airflow is reduced. Therefore, air can flow more smoothly in an interval between the strip parts. To sum up, the strip heatsink enhances the heat conduction by increasing the whole surface area, and enhances the heat convection by making more space between the dissipating strips.

A method for avoiding an injector orifice internal coking of the spray orifices of a multi-orifice fuel injector of a direct injection internal combustion engine, e.g., of a motor vehicle, is provided. Fuel is injected into a combustion chamber of the internal combustion engine by multiple injections. The fuel is injected by a first main injection during the intake stroke and by a subsequent postinjection during the compression stroke before the ignition time. Thereby, during a long operation of the internal combustion engine, especially in a homogeneous operation, the injection time does not have to be continually increased in order to compensate for the increasingly shrinking cross section of the spray orifices.

An electrical assembly comprising a circuit board an electrical device, and a heat dissipation device. The electrical device is capable of emitting thermal energy and electromagnetic interference (EMI). The electrical device is secured to the circuit board. The heat dissipation device is secured to the circuit board and is in thermal communication with the electrical device. The heat dissipation device also includes a continuous EMI fence and a plurality of fins disposed in a matrix orientation. The fins are spaced from one another to allow for efficient heat dissipation and have a substantially square cross-sectional shape.

The invention provides a smelting furnace. The smelting furnace comprises refractory materials, heat insulating materials, a blower, a pipeline, valves, ignition devices, fuel supply devices and temperature measuring devices. The smelting furnace is characterized in that a furnace chamber is provided with a heating chamber and a smelting chamber; the lower part of the heating chamber is communicated with the smelting chamber; the lower part of the smelting chamber is provided with a hearth; the hearth is provided with hearth discharge holes; the upper part of the heating chamber is provided with a heating chamber feeding hole and a heating chamber gas outlet; at least a flame path is arranged around the inner wall of the smelting chamber; at least an inlet channel is arranged on the side walls of the flame paths; and the inlet channels are communicated with the flame paths. The smelting furnace is energy-saving and environment-friendly, can be used for smelting various metals and alloys, can be used for smelting aluminium by a fire method and can be used for refining aluminium alloys. The smelting furnace can adopt any mineral for smelting, can realize carbothermal reduction of any metallic oxide and can smelt alloys even with soil or garbage, so the smelting furnace can turn stone and soil into gold and is true alchemy. The smelting furnace dispenses with cokes and synchronously completes ironmaking and steelmaking. The heat generated through steelmaking is fully utilized and the waste gases are unitedly treated. The smelting furnace can be used for producing glass, ceramic frits, sodium silicate and the like. The smelting furnace can adopt various materials, can refine precious elements, does not produce slag and can bring metallurgy revolution.

A heat dissipation module includes a heat dissipation fin set. The heat dissipation fin set includes a plurality of heat dissipation fins, wherein these heat dissipation fins are stacked on each other, and each of the heat dissipation fins has a front side, a rear side opposite to the front side and at least one turbulent structure set. The turbulent structure set is located between the front side and the rear side and includes a plurality of first turbulent structures. The first turbulent structures are arranged from the front side to the rear side in sequence. A heat dissipation airflow flows from the front side toward the turbulent structure set along a flowing direction, and passes through the turbulent structure set to flow toward the rear side. An extending direction of each of the first turbulent structures is tilted relative to the flowing direction.

The invention discloses a wind guiding cover, which comprises a wind inlet part provided with a wind inlet, a wind outlet part provided with a wind outlet opposite to the wind inlet, and a heat exchange area arranged between the wind inlet and the wind outlet. The heat exchange area is provided with an airflow turbulence part close to the wind inlet part. When the wind guiding cover covers a heating element of a main plate, the wind guiding cover and the main plate form a wind passage; and the heat exchange area is positioned above the heating element so that the airflow passes through the airflow turbulence part to increase airflow turbulence so as to reinforce the heat convection effect and increase the convection heat exchange coefficient.

The invention discloses a farm grain preprocessing device integrating drying and screening. The device comprises a feeding device and a shell. The feeding device comprises an inclined conveying belt and a first horizontal conveying belt. The first horizontal conveying belt is connected with the inclined conveying belt. The first horizontal conveying belt is located above the shell. The upper end of the shell is provided with an air blower. An air outlet of the air blower is located under the right end of the first horizontal conveying belt. A second horizontal conveying belt is arranged above the right side of the shell. A first screen net is arranged in the shell. A second screen net is arranged below the first screen net. The mesh diameter of the first screen net is larger than the mesh diameter of the second screen net. The preprocessing device integrated screening and drying, effectively saves equipment investment, reduces the cost and can achieve the effects that classification effect is obvious and drying is uniform, meanwhile has the advantages of being reasonable in structural design, convenient to use, good in screening effect, high in drying efficiency and the like, and has the wide application prospect and the high practical value.

The invention relates to a multifunctional electric heater which comprises a radiating main body, wherein a heating cavity is arranged in the radiating main body, electric heating elements and heating media are arranged in the heating cavity, and a humidifying device is arranged on the outer surface of the radiating main body. The humidifying device comprises a water storage box arranged on the radiating main body and a water outlet arranged on the water storage box, wherein an electric vibrator opposite to the water outlet is arranged in the water storage box, and an auxiliary element used for fastening heat circulation is further arranged on the outer surface of the radiating main body. The heating media in the heating cavity are heated through the electric heating elements and gradually diffuse in the whole peripheral space with heated air serving as heat transfer medium to form hot air circulation. Water in the water storage box is changed to vapor and escapes from the water outlet position. The vapor temperature at the time is room temperature so that the phenomena of scalding and water dropping are avoided during use, and the multifunctional electric heater is good in humidifying effect.

A heat dissipation device comprises a substrate, a fin assembly located above the substrate and at least one heat pipe connecting the substrate with the fin assembly together. The fin assembly comprises a plurality of fins stacked one above another along a bottom to top direction and space from each other with a gap defined between two neighboring fins. Each of the fins defines a plurality of ventilating holes therein. The ventilating holes of the fins are aligned with each other and form a plurality of vertical air channels in the fin assembly along the bottom to the top direction for ambient air in the gaps flowing therethrough upwardly to escape the fin assembly.

The invention belongs to the field of household appliances, and especially relates to an automatic pressure-stabilizing descaling water heater. The water heater comprises a water tank, a heating pipe,a heating pipe and a water outlet pipe. The heating pipe is arranged at the inner top surface of the water tank, the water inlet pipe and the water outlet pipe fixedly communicate with the upper endand the lower end of the water tank, two sliding blocks with U-shaped sections are arranged in the water tank, the two sliding blocks are symmetrically arranged relative to a heat receiving pipe and are in sealed sliding connection with the side wall of the water tank, an upper plate and a lower plate are arranged between the two sliding blocks, the opposite faces of the upper plate and the lowerplate are connected with the inner side walls of the sliding blocks through extension springs and are in sealed sliding connection with the side walls of the sliding blocks, permanent magnets with thesame polarity attracting each other are fixedly embedded in the opposite side walls of the upper plate and the lower plate, a plurality of upper through holes are formed in the upper plate, a plurality of stand columns matched with the upper through holes are arranged on the lower plate, and a plurality of lower through holes are formed in the lower plate. By arranging the descaling mechanism, scale on the heating pipe is scraped off along with up-down movement of an induction coil on the heating pipe, and cleanliness of the heating pipe can be effectively guaranteed.

The electronic portable device of the invention includes a housing, a lifting mechanism, a controlling unit, and a heat dissipation fan. The housing includes an opening The lifting mechanism is movably disposed in the housing and corresponds to the opening. The lifting mechanism is configured to move toward or away from the opening. The control unit is coupled to the lifting mechanism and configured to control the lifting mechanism to move toward or away from the opening. The heat dissipation fan is disposed on the lifting mechanism and corresponds to the opening. When the lifting mechanism moves towards the opening, the heat dissipation fan is lifted toward the opening by the lifting mechanism, and is protruded from an outer surface of the housing through the opening.

The invention discloses a wireless communication equipment cabinet, which comprises a cabinet body, a base is connected to the center of the inner bottom surface of the cabinet body, a vertical plate is connected to the center of the top surface of the base, and the two sides of the vertical plate are respectively A group of heat dissipation devices are provided, and the heat dissipation devices include a driving shaft and a driven shaft that are rotatably connected to the vertical plate. The driving shaft and the driven shaft are respectively connected with a driving double sprocket and a driven double sprocket. The outer side of the driving double sprocket and the driven double sprocket is sleeved with a conveyor chain plate, and the outer surface of the conveyor chain plate is respectively equipped with a stirring fan and a cooling fin, and a driving motor is installed on the side of the vertical plate, and the driving The output end of the motor is connected with a driving sprocket. In the present invention, the circularly moving agitating fan and cooling fins can form space turbulent gas in the cabinet, make the temperature distribution uniform, effectively improve the working environment in the cabinet, have reasonable structure design, and have good popularization and use value.

A disclosed medicament concentration evaporation apparatus comprises a separator, an evaporator, a gas-liquid separating device, a foam-removing device, a shake-type cleaning device and a liquid-inlet end enclosure; the evaporator is arranged at the bottom of the separator and communicated with the separator; the gas-liquid separating device is arranged at the top of the separator and communicated with the separator; the foam-removing device is arranged in the separator and disposed below the gas-liquid separating device; the shake-type cleaning device is arranged between the separator and the evaporator and is relatively static compared with the separator and the evaporator; and the liquid-inlet end enclosure is arranged at the bottom of the evaporator. The medicament concentration evaporation apparatus is capable of effectively eliminating foams of the medicament liquid, effectively cleaning medicament dirty on the inner wall and improving medicament preparation quality.

A projector includes a casing, an optical engine module, and a heat dissipation module. The optical engine module is disposed in the casing. The heat dissipation module is disposed in the casing and includes a heat dissipation fin set. The heat dissipation fin set includes at least one heat dissipation fin and at least one turbulent structure. The heat dissipation fin has a surface. The surface includes a first turbulent region and a second turbulent region. The first turbulent region is adjacent to the second turbulent region. The turbulent structure is disposed at least one of the first turbulent region and the second turbulent region, and the turbulent structure protrudes from the surface. An opening is formed between a top end of the turbulent structure and the surface.

The invention relates to a method for improving the permeability of an oil sand reservoir by squeezing saturated CO2 brine. The method comprises the following steps of calculating the overall permeability variable coefficient of a permeability profile, and reasonably selecting conventional water injection, injecting saturated CO2 brine at normal temperature and injecting CO2 saturated brine at high temperature; calculating a permeability improvement coefficient, and drawing a relationship between the initial permeability and the permeability improvement coefficient; reasonably controlling the pressure of the wellhead to gradually and slowly squeeze the saturated CO2 brine into the reservoir; recalculating the overall permeability variation coefficient, and when the overall variation coefficient of the stratum is reduced to be less than 0.5, determining that the transformation succeeds; and if the variable coefficient of the overall permeability of the stratum is still larger than 0.5, injecting CO2 saline water again at high temperature for 24 hours or prolonging the injection time by 2 days. On the premise of not influencing the traditional liquid extrusion expansion effect, the CO2 solution selectively corrodes argillaceous components, the permeability heterogeneity in the borehole direction is weakened while the overall permeability of a reservoir is increased, and therefore it is guaranteed that a steam cavity is evenly expanded in the borehole direction, the crude oil yield is increased, and the crude oil recovery rate is increased.

A projector includes a casing, an optical engine module, and a heat dissipation module. The optical engine module is disposed in the casing. The heat dissipation module is disposed in the casing and includes a heat dissipation fin set. The heat dissipation fin set includes at least one heat dissipation fin and at least one turbulent structure. The heat dissipation fin has a surface. The surface includes a first turbulent region and a second turbulent region. The first turbulent region is adjacent to the second turbulent region. The turbulent structure is disposed at least one of the first turbulent region and the second turbulent region, and the turbulent structure protrudes from the surface. An opening is formed between a top end of the turbulent structure and the surface.

The invention provides air conditioner control method and device, and an air conditioner. The control method is applied when the air conditioner is at a low-wind-speed heating module and comprises thesteps of monitoring: monitoring the indoor temperature, acquiring the current indoor temperature, the current indoor humidity and the current first inner pipe temperature of the air conditioner whenthe indoor temperature meets the preset condition, wherein the preset condition comprises: the current indoor temperature is at least x DEG C higher than the indoor temperature before the first duration; calculating: determining the lowest heat exchange temperature according to the current indoor temperature and the current indoor humidity, wherein the lowest heat exchange temperature is the innerpipe temperature required for maintaining the current indoor temperature; and regulating: regulating the inner pipe temperature of the air conditioner to be within a first temperature range, whereinthe first temperature is larger than the lowest heat exchange temperature and smaller than the first inner pipe temperature. By utilizing an air thermal physics characteristic, heat convection betweenupper-layer air and lower-layer air indoors is improved, the room air is uniform, and meanwhile, the heat demand can be met.

A subterranean continuous loop heat exchanger is disclosed having a borehole including an entrance at a first end and an exit at a second end and a conduit for a fluid. A direction of fluid flow relative to the borehole is unidirectional, and a major length of the borehole is non-horizontal. The entrance and the exit are separated by a predetermined distance and a first thermal envelope at the entrance and a second thermal envelope at the exit are substantially independent. The conduit is positioned in at least a portion of the borehole and in operational connection to supply and return lines for connection to a ground sourced heat pump or to a heat exchanger system. Also disclosed are methods of constructing a subterranean continuous loop heat exchanger having at least one continuous borehole and a method of regulating a temperature in a structure with a system that includes the subterranean continuous loop heat exchanger.

The invention discloses an electronic device which comprises a sealing shell, a heat conducting element and a fan, wherein the heat conducting element penetrates the sealing shell, and the fan is arranged in the sealing shell. The fan generates an air flow which flows in the sealing shell and flows through the heat conducting element. Air in the sealing shell is driven to flow by the fan arrangedin the sealing shell so as to conduct heat out of the shell through the heat conducting element which penetrates the sealing shell, thus local accumulation of the heat in the sealing shell can be avoided. Moreover, heat convection is also reinforced so as to improve the efficiency of heat exchange with outside cold air, thus the invention provides a more effective heat exchange mechanism which enables the electronic device with the sealing shell to operate more stably.

The invention discloses an operating theater transfusion blood warming device which comprises a warming tank, wherein the upper surface of the warming tank is covered by a cover plate; a micro servo motor, a temperature sensor and a single chip microcomputer are fixedly arranged on the lower surface of the cover plate; a main occlusion wheel is fixedly connected with the output shaft of the microservo motor of the warming tank; a water drainage valve is fixedly arranged on the lower surface of the warming tank; a transmission shaft is arranged in the middle in the warming tank in a limited rotation manner; a secondary occlusion wheel is fixedly connected with the upper surface of the transmission shaft; the secondary occlusion wheel is meshed with the main occlusion wheel; a first transmission sleeve block is fixedly connected with the shaft arm of the transmission shaft; and first transmission arms are rotationally connected with the periphery of the first transmission sleeve block through hinge pines. Due to cooperation of the structures, the blood transfusion bag warming efficiency and effect can be improved, the temperature for warming a blood transfusion bag can be monitored,the temperature can be prevented from being too high, and the activity of effective components of blood can be ensured.

The invention discloses a computer hard disk. The computer hard disk comprises a hard disk shell, a mounting board and mounting lug seats, wherein four corners of the outer side of the hard disk shellare fixedly connected with the mounting lug seats; an air inlet is formed in the central position of the bottom part of the hard disk shell; a heat dissipation box body is arranged at the bottom partof the hard disk shell outside the air inlet; a cooling fan is arranged on the bottom end of the inner part of the heat dissipation box body; a metal inner shell is arranged at the inner part of thehard disk shell through a supporting rod; cooling fins are uniformly arranged on the outer side wall of the metal inner shell; the mounting board is movably arranged in the metal inner shell; a coverboard is arranged on one end, which is far away from the metal inner shell, of the mounting board. According to the computer hard disk disclosed by the invention, by uniformly arranging the mounting lug seats which are respectively formed by a first lug board, two damping springs and a second lug board at the periphery of the hard disk shell, the resonance resistance of a hard disk can be effectively increased; meanwhile, during collision, the hard disk can be well buffered and protected, and the damage caused by collision and vibration can be avoided.