33results about How to "Reduce the difficulty of heat dissipation" patented technology

The invention discloses a laminated type high-power magneto-rheological fluid clutch. The laminated type high-power magneto-rheological fluid clutch comprises a primary transmission shaft (4), a left rotary magnetic conductance side board (6), a magnet exciting coil (8), a fixing magnetic conductance outer shell (9), a right rotary magnetic conductance side board (14), a secondary transmission shaft (17), a magnetic conductance board (18), a plurality of layer-adjustable inner layer primary friction plate groups (3), outer layer primary friction plate groups (7), outer layer secondary friction plate groups (12) and inner layer secondary friction plate groups (15), inner layer small magnetic isolation ring groups (2), outer layer small magnetic isolation ring groups (5), an inner layer large magnetic isolation ring (13) and an outer layer large magnetic isolation ring (20). Compared with the prior art, the laminated type high-power magneto-rheological fluid clutch adopts a plurality of friction plate groups for transmission, effectively disperses a heat source, reduces the heat dissipation difficulty, utilizes cooling water for cooling, and obviously improves the transmission power and the heat dissipation effect. When the transmitted power is insufficient, a mode of increasing the layers of the friction plate groups can be adopted, and controllable operation of the transmitted power is easy to achieve.

The invention discloses a design method of a self-adaptive headlamp based on a fly's-eye lens. In the field of an automotive headlamp, an existing technology has the defects of insufficiently enough light control, low efficiency for solar energy utilization and the like. The self-adaptive headlamp comprises a projection part and a reflection part, wherein light rays emitted by an LED (Light Emitting Diode) are collimated by a paraboloid and a collimating lens, light beams are uniformly imaged on a digital micromirror by double rows of fly's-eye lenses and a convergent lens, and every row of fly's-eye lenses is composed of three small lenses of different shapes. The design method provided by the invention has the beneficial effects of being precise to control, many in realized lighting mode and good effect of various lighting mode; furthermore, long-distance light and short-distance light are separately realized, therefore the cooling difficulty can be reduced; in addition, uniform light spots with light and shade cut-off lines are formed in a digital micro-mirror by the fly's-eye lenses, therefore, light energy can be saved, and the efficiency for solar energy utilization can be improved; the double rows of fly's-eye lenses are served as a light equalization system, therefore short optical distance and good light equalization effect can be realized.

The invention discloses a rotor structure for a high speed permanent magnet synchronous machine. The rotor structure comprises an electric machine rotor and a rotating shaft, wherein a protection layer is arranged at the outermost layer of the electric machine rotor; the rotating shaft is arranged at the center of the electric machine rotor; permanent magnets are arranged between the rotating shaft and the protection layer; the permanent magnets are divided into an inner layer and an outer layer; the permanent magnet at the outer layer is a ferrite permanent magnet; the permanent magnet at the inner layer is a rare earth permanent magnet; the number of poles of the ferrite permanent magnet is p1, the number of poles of the rare earth permanent magnet is p2, and P1 is equal to P2; and the central lines of the same poles of the two layers of permanent magnets are coincident. According to the rotor structure, the advantages of residual magnetism and low conductivity of the ferrite permanent magnet and the advantage of high residual magnetism of the rare earth permanent magnet are fully combined, the ferrite permanent magnet and the rare earth permanent magnet are matched according to a certain thickness ratio, so that the vortex loss of the rotor is reduced and the heat dissipation difficulty of the electric machine is reduced on the premise of guaranteeing the needed magnetic field generation ability, and furthermore, through the reasonable design, a problem of large volume of the electric machine, which is caused by entirely using the ferrite permanent magnet material, or large vortex loss of the electric machine, which is caused by entirely using the rare earth permanent magnet material, is solved.

The invention provides a phased-array integrated optical chip. The phased-array integrated optical chip comprises a combiner, a 1xN beam splitter, a phased waveguide array and an output region connected in sequence, wherein the combiner is provided with an input end corresponding to an emitted beam of a laser chip, and the output end of the combiner is connected with the 1xN beam splitter; and the1xN beam splitter is used for dividing one channel of light into multiple channels of light and outputting the multiple channels of light to the phased waveguide array. Through connection of the emitted beam, output power of multiple light sources can be synthesized, and an emitting device can have high output power on the premise of not enhancing heat dissipation difficulty. Meanwhile, the invention provides an optical phased-array emitting device. The optical phased-array emitting device comprises the phased-array integrated optical chip and the laser chip integrated on the phased-array integrated optical chip. According to the scheme of integrating phased functions on the same module or chip, the structure is compacter.

The invention discloses a novel high-temperature-resistant fire-fighting smoke-discharge fan. The novel high-temperature-resistant fire-fighting smoke-discharge fan comprises an outer barrel, an innerbarrel which is coaxially arranged in the outer barrel and is sealed, a plurality of guide supporting parts for fixing the inner barrel, a through shaft motor which is coaxially mounted in the innerbarrel, smoke discharge fans which are connected with a rotary shaft of the through shaft motor, an air outlet channel and an air inlet channel for enabling the inner space of the inner barrel to communicate with the outer space of the outer barrel, an air exhaust guide ring which is arranged at the front end of the inner wall of the inner barrel and is tapered, a reversing transmission mechanismwhich is connected with the rear end of the rotary shaft, and an air-cooling mechanism which is driven by the reversing transmission mechanism; an air inlet of the air-cooling mechanism communicates with the air inlet channel; and an air outlet of the air-cooling mechanism faces towards the front end of the inner barrel. Through the sealed type fan of the inner barrel, high-temperature smoke is prevented from invading to increase the temperature of a motor operation environment; meanwhile, a ventilating channel which communicates with outside fresh air and the air-cooling mechanism which is synchronously driven by a fan motor are arranged, so that independent circulation of heat dissipation inside the inner barrel is realized, and an air-cooling way replaces a conventional water-cooling way, and therefore, operation stability of the motor is improved from multiple aspects.

The invention relates to a high-power all-optical-fiber cascade amplifier, which comprises a seed source (1), an amplification stage (2) and an output terminal (3), wherein an output end of the seed source (1) is connected with an output end of the amplification stage (2), and an output end of the amplification stage (2) is connected with the output terminal (3). The invention provides a technical scheme with high operability for high-power and high-brightness laser output. Provided by the invention is a high-power cascade amplification system which has a high power output capacity and also has brightness maintenance; a simple MOPA structure is adopted, myriawatt high-brightness laser output can be achieved by only primary amplification; the amplification stage adopts a double-end pump structure, so that the heat dissipation difficulty is reduced; and commercial production is easy to realize.

The invention relates to the technical field of ultraviolet light application, in particular to an ultraviolet light source assembly, an ultraviolet optical system and an ultraviolet printing device. The ultraviolet light source assembly comprises a plurality of light sources for emitting ultraviolet light and further comprises a light collecting device. The light collecting device is matched with the light sources, so that all or part of the light emitted by the light sources enters the light collecting device, the light collecting device converges the light entering the light collecting device to a plane, and a continuous strip-shaped irradiation area is formed in the plane. The light collecting device is adopted for collecting and converging the light emitted by the light sources, and the continuous strip-shaped irradiation area is formed on the plane. Compared with a traditional ultraviolet light source assembly, identical irradiation intensity is achieved; and by means of the structure, the number of the needed light sources is far smaller than that of light sources needed by adopting a traditional structure, and therefore the structure of equipment is simplified, heat radiation difficulty is reduced, and then the reliability of the equipment is improved.

The invention is suitable for the technical field of permanent magnet synchronous motors, and provides a motor driving method and device, and the method comprises the steps: generating a first drivingpulse signal and a second driving pulse signal according to a conduction sector signal; sequentially acting a first driving pulse signal on the three switching elements in the upper bridge arm of theinverter according to the conduction sector signal, and sequentially acting a second driving pulse signal on the three switching elements in the lower bridge arm of the inverter according to the conduction sector signal. The period of the conduction sector signal is three times of the period of the carrier signal; and the action time of the first driving pulse signal on each switching element inthe upper bridge arm of the inverter and the action time of the second driving pulse signal on each switching element in the lower bridge arm of the inverter are the same as the period of the carriersignal. According to the driving method provided by the invention, each switching element of the inverter is switched on and off only once in each electrical period, so that the switching loss is reduced, the heat productivity and the heat dissipation difficulty of equipment are reduced, and the stability of the equipment is improved.

The invention provides an LED lamp strip whose a plurality of LED tube cores are directly mounted on a circuit substrate. The encapsulating structure comprises a circuit board substrate, a transparent bowl cup strip, the plurality of LED tube cores, fluorescent colloid coated on the tube cores and a transparent external encapsulating material, wherein the transparent bowl cup strip is combined with the circuit board substrate to from a lamp strip foundation support provided with a plurality of mounting depressions; one LED tube core is encapsulated in each mounting depression of the lamp strip foundation support; LED tube cores are fixedly bound on a manufactured circuit bonding pad of the circuit substrate via linkage and weld lines; fluorescent colloid are coated in the mounting depressions and covered with the bond LED tube cores; the bowl cup strip and the tube cores are encapsulated by the transparent external encapsulating material, thus forming an outer covering layer to protect the tube cores and the fluorescent colloid; and the outer covering layer is combined with the lamp strip to form a whole LED lighting strip.

The invention discloses a split type superhigh-expansion-ratio engine and an adjustment and control method and belongs to the field of engines. The split type superhigh-expansion-ratio engine comprises a gas compression device, an expansion acting device and a high-pressure pipe. A high-pressure gas tank is arranged between the gas compression device and the expansion acting device and is in gas circuit connection with the gas compression device and the expansion acting device through the high-pressure pipe. The air cylinder volume of the expansion acting device is greater than the air inlet natural volume. The split type engine is different from a common Otto-cycle internal combustion engine in that the gas compression stroke is moved into the gas compression device out of an acting cylinder and the engine is provided with the high-pressure gas tank for achieving buffering, pressure stabilization and temporary storage of compressed gas. By means of a certain technical scheme and the adjustment and control method, the engine can achieve the Atkinson cycle easily at the low cost in all working conditions; and in addition, the expansion ratio can be far greater than the compression ratio under the working condition of small acceleration, thus, oil consumption is remarkably lowered, and the effect is particularly obvious under the working condition of the small acceleration.

The invention belongs to the technical field of welding robots, and particularly relates to a control box base capable of efficiently cooling for a welding robot, which comprises a base and a welding robot, a control box and a cooling box are mounted at the top of the base, a controller is embedded in the outer side of the control box, and the cooling box is communicated with the control box; the welding robot is rotatably mounted at the top of the control box, a semiconductor refrigerator is embedded in the top of the cooling box, a power mechanism is arranged on the cooling box, a fan is connected to the power mechanism, a uniform air guide mechanism is connected to the power mechanism, the uniform air guide mechanism extends into the control box, and a dustproof mechanism is connected to the power mechanism; and the semiconductor refrigerator is used for refrigerating air, and the power mechanism comprises a servo motor and a power shaft. The control box base is convenient to operate, cooling and heat dissipation are facilitated, air can be refrigerated, the heat dissipation effect can be improved, air can be evenly guided, heat dissipation can be achieved, dust prevention and dust screen cleaning can be achieved, and the heat dissipation difficulty is reduced.

The invention discloses a temperature control device and method of a power device and electrical equipment, and the device comprises a semiconductor thermopile unit which detects the temperature of the power device, and obtains the current temperature of the power device, an acquisition unit used for detecting the current of the power device to obtain the current of the power device, and detectingthe voltage of the power device to obtain the current voltage of the power device, a control unit used for generating a first control signal capable of controlling the refrigerating capacity of a semiconductor thermopile unit according to the current temperature and the current current and the current voltage in two adjacent periods, and the semiconductor thermopile unit used for adjusting the refrigerating capacity of the semiconductor thermopile unit under the control of the first control signal so as to control the current temperature of the power device. According to the scheme, the heatdissipation difficulty of the power device in the electric controller of the electrical equipment can be reduced, and the heat dissipation performance is improved.

The present invention relates to the field of projection devices, and discloses a DLP projection device, which includes a casing, a light source, a first lens, a second lens, a color wheel assembly and a digital micromirror element, and the casing includes an adjacent sealed cavity and a heat dissipation cavity, the light source is disposed in the heat dissipation cavity, the first lens is disposed on one side of the light source, the first lens penetrates the cavity wall between the sealed cavity and the heat dissipation cavity and is in contact with the heat dissipation cavity The sealed cavity is sealed and connected, the color wheel assembly, the second lens and the digital micromirror element are arranged in the sealed cavity, a first heat sink is arranged in the heat dissipation cavity, and the first heat dissipation The radiator is used to dissipate heat for the light source and the first lens, and a second radiator is arranged in the sealed cavity, and the second radiator is used to reduce the temperature of the sealed cavity. The DLP projection device respectively arranges the light source and the optical path assembly in the heat dissipation cavity and the sealed cavity, thereby preventing dust from entering the sealed cavity and polluting the optical path assembly.

The invention discloses a low-cost miniature projection system based on LEDs and lenses and aims to solve the problems that an existing projection system is low in light energy utilization rate, low in electro-optical conversion efficiency, complex in structure, many in components, large in size, high in cost, difficult in radiating, and the like. The low-cost miniature projection system comprises a light source, a shaping lens, a digital micro-mirror device, a projection lens and an absorption body and is characterized in that the system does not comprise a color wheel, a dichroscope and a light guide tube, and the three-color LEDs replace the role of the color wheel of a traditional projection system in a lighting system. The low-cost miniature projection system has the advantages that the optical structure of the projection system is simplified, the problems of color wheel optical loss, excessively high system temperature and the like of the traditional system are solved, optical energy utilization rate is increased, radiating difficulty is lowered, and the evenness of effective projection area is increased.

The invention relates to the technical field of drilling tools, in particular to a rolling supporting type deep hole drill which at least comprises a tool body, wherein blades in different forms are arranged at the front end of the tool body and include an inner blade, a middle blade and an outer blade, and at least two guide supporting parts are arranged on the outer wall of the tool body. Each guide supporting part at least comprises a pin roller and a pin roller containing cavity containing the pin roller. According to the rolling type guide supporting part in the embodiment, on the basis that only a guide supporting function is achieved in the prior art, heating is reduced through rolling friction, the heat dissipation difficulty of deep hole machining is lowered, rolling machining is conducted on the hole wall through rolling type auxiliary cutting, so that the surface quality of the hole wall is improved, and compared with the prior art,leap-type progress is achieved, and the rolling supporting type deep hole drill is in particular important to deep hole drilling machining.

The invention discloses a low-concentration photovoltaic component. The photovoltaic component comprises a back panel, a light receiver and a concentrating system, wherein the back panel comprises a substrate and a metal foil; the surface of the metal foil is cut into a plurality of insulated periodic units; the substrate and the metal foil are adhered together through an insulating heat-conducting adhesive; the light receiver consists of serial solar cell chips of a plurality of linearly arranged glass substrates and is adhered in the periodic unit on the metal foil through the insulating heat-conducting adhesive; the adjacent solar cell chips are connected through the metal foil; and the concentrating light comprises a light focusing strip-shaped lens, a parabolic trough, a combined parabolic surface and an auxiliary element. By using the photovoltaic component, the sunshine can be focused on the light receiver with low cost and high efficiency under the optimal focusing condition so as to obtain the maximum photovoltaic conversion efficiency. The low-concentration photovoltaic component reduces the difficulty and the cost for heat dissipation and sun tracking while reducing theseries resistance, the machining method for the component is simple and reliable, and the manufactured component has stable performance.

A ceramic steam cavity radiator comprises two substrates and side walls, one of the two substrates serves as the top wall of a shell, and the other substrate serves as the bottom wall of the shell. The two substrates and the side walls are integrally welded to form a shell structure comprising a closed cavity, and the shell is filled with a liquid working medium; the substrate is prepared from a ceramic material; and the side wall is made of metal copper. The ceramic steam cavity radiator can meet the technological requirements of the semiconductor production process, and is wider in application range in the aspect of device heat dissipation; the steam cavity radiator can be directly welded with the component, so that the hot spot heat of the component can be quickly diffused; the ceramicsteam cavity replaces a traditional pcb layer, the external heat transfer path of the component is shortened, and the heat dissipation capacity is more outstanding. The surface of the ceramic steam cavity radiator can be patterned, integrated integration of heat dissipation and component functions is achieved, the heat dissipation capacity of components can be greatly improved, and the overall packaging size can be greatly reduced. And meanwhile, a feasible heat dissipation solution is provided for new fields such as manufacturing of three-dimensional stacked chips.

The present invention is applicable to the technical field of permanent magnet synchronous motors, and provides a motor driving method and a driving device, including: generating a first driving pulse signal and a second driving pulse signal according to the conduction sector signal; The first driving pulse signal acts on the three switching elements in the upper bridge arm of the inverter in sequence, and the second driving pulse signal acts on the three switching elements in the lower bridge arm of the inverter in sequence according to the conduction sector signal above; where the period of the conduction sector signal is three times the period of the carrier signal; the action time of the first driving pulse signal on each switching element in the upper bridge arm of the inverter The action time of each switching element in the lower bridge arm of the device is the same as the period of the carrier signal. The driving method of the invention enables each switching element of the inverter to switch only once in each electrical cycle, which reduces switching loss, lowers the calorific value of the equipment and the difficulty of heat dissipation, and improves the stability of the equipment.

The invention discloses a temperature control device, method and electrical equipment of a power device. The device comprises: a semiconductor thermopile unit, which detects the temperature of the power device to obtain the current temperature of the power device; an acquisition unit, which detects the temperature of the power device; Detecting the current of the power device to obtain the current current of the power device; and detecting the voltage of the power device to obtain the current voltage of the power device; the control unit, according to the current temperature and the adjacent The current current and the current voltage within two cycles generate a first control signal capable of controlling the cooling capacity of the semiconductor thermopile unit; the semiconductor thermopile unit is also under the control of the first control signal, The cooling capacity of the semiconductor thermopile unit itself is adjusted to control the current temperature of the power device. This solution can reduce the heat dissipation difficulty of the power devices in the electric controller of the electrical equipment, and improve the heat dissipation performance.

A wireless communication device comprises a digital circuit board, a radio frequency circuit board and an antenna circuit board which are arranged in a stack mode, and the radio frequency circuit board is electrically connected with the digital circuit board and the antenna circuit board. The wireless communication device achieves structure modularization and integration design through stacked architecture so as to reduce the device size.

A processing device comprises a plurality of battery transport channels, a plurality of high heat generating light sources, and a plurality of low heating light sources. The battery transport channels are arranged adjacent to each other, wherein each battery transport channel comprises a transport device and the transport devices are configured to transport a plurality of semiconductor solar cells. The high heat source and the low heat source are arranged in a staggered manner along the transport direction of the transport device to the upper side of the battery transport channel for conducting heat treatment of the semiconductor solar cell. The light emitted by the high-heating light source and the low-emission light source contains visible light and infrared light, and the sum of the visible light accounts for 50 to 90% of the sum of the infrared light and the visible light. By arranging the high-heating light source and the low-emission light source in a staggered manner, it is possible to effectively reduce the temperature in the chamber of the processing apparatus while providing sufficient illuminance of the semiconductor solar cell, the difficulty of radiating the chamber of the processing apparatus can be drastically reduced, and the uniformity of the chamber temperature can be improved.

The invention relates to the technical field of drilling tools, and specifically discloses a rolling support type deep hole drill, which at least includes a cutter body, and the front end of the cutter body is provided with different types of blades, which are respectively an inner blade, a middle blade and an outer blade. A blade, the outer wall of the blade body is provided with at least two guide support parts, the guide support parts at least include a roller and a roller accommodating cavity for accommodating the roller. On the basis that the rolling guide support part in this embodiment only has the function of guide support in the prior art, it not only reduces heat generation through rolling friction, and reduces the difficulty of heat dissipation in deep hole machining, but also assists cutting through rolling type. The hole wall is rolled to improve the surface quality of the hole wall. Compared with the prior art, a leap-forward progress is achieved, which is of particular significance for deep hole drilling.

The invention relates to an AC-DC-AC power unit and the components thereof. And it comprises rectifier bridge, inverter bridge and capacitor group, where the rectifier bridge is used to convert input AC current into ripple DC current, the capacitor group is used to filter the ripple DC curren into stable DC current and the inverter bridge is used to invert the stable DC current into AC current with the required frequency and amplitude. And its sturcutre comprises at least two current transformer modules, their positive and negative ends are interconnected in parallel through positive and negative DC buses, respectively, each current transformer module comprises an inverter bridge arm and an independent radiator group. And it implements disperse radiation and reduces stray inductance, easy to make and reducing maintaining, changing and transporting difficulities.

The invention discloses a novel high-temperature-resistant fire-fighting smoke-discharge fan. The novel high-temperature-resistant fire-fighting smoke-discharge fan comprises an outer barrel, an innerbarrel which is coaxially arranged in the outer barrel and is sealed, a plurality of guide supporting parts for fixing the inner barrel, a through shaft motor which is coaxially mounted in the innerbarrel, smoke discharge fans which are connected with a rotary shaft of the through shaft motor, an air outlet channel and an air inlet channel for enabling the inner space of the inner barrel to communicate with the outer space of the outer barrel, an air exhaust guide ring which is arranged at the front end of the inner wall of the inner barrel and is tapered, a reversing transmission mechanismwhich is connected with the rear end of the rotary shaft, and an air-cooling mechanism which is driven by the reversing transmission mechanism; an air inlet of the air-cooling mechanism communicates with the air inlet channel; and an air outlet of the air-cooling mechanism faces towards the front end of the inner barrel. Through the sealed type fan of the inner barrel, high-temperature smoke is prevented from invading to increase the temperature of a motor operation environment; meanwhile, a ventilating channel which communicates with outside fresh air and the air-cooling mechanism which is synchronously driven by a fan motor are arranged, so that independent circulation of heat dissipation inside the inner barrel is realized, and an air-cooling way replaces a conventional water-cooling way, and therefore, operation stability of the motor is improved from multiple aspects.

The invention discloses a server and a server group. The server comprises a shell, and a fan and a server assembly arranged in the shell; the fan is arranged in the shell close to the first end planeof the shell; a first air inlet is formed in the first end plane; an air outlet is formed in the second end plane, opposite to the first end plane, of the shell, wherein a second air inlet is formed in one end, close to the fan, of the first side surface of the shell; and the first side surface is connected with the first end plane to enable the fan to induce air from the first air inlet and the second air inlet and to exhaust air from the air outlet so as to perform heat dissipation on the server assembly.

The invention provides a three-way catalytic reactor protecting system for an automobile, which belongs to the technical field of vehicles. The technical problems of poor purification effect, short service life and the like of a traditional automobile three-way catalytic reactor are solved. In the three-way catalytic reactor protecting system for the automobile, a vehicle comprises an exhaust pipe and a three-way catalytic reactor, wherein the exhaust pipe is communicated with an engine exhaust manifold; the three-way catalytic reactor is connected to the exhaust pipe. The protecting system comprises an electrically controlled unit (ECU) and a sensing element which is arranged on the exhaust pipe and can detect tail gas temperature, wherein the sensing element is connected with the ECU. Acooling device capable of reducing the tail gas temperature in the exhaust pipe is arranged on the exhaust pipe between the exhaust manifold and the three-way catalytic reactor and is connected with the ECU through a control mechanism capable of controlling the cooling device to cool tail gas forcibly. By reducing the tail gas temperature, the three-way catalytic reactor can be effectively protected. At the same time, the three-way catalytic reactor protecting system for the automobile has the advantages of low energy consumption, high environmental friendliness and the like.

The embodiment of the invention discloses a multi-chip addressable TOF emitting module and a laser. The multi-chip addressable TOF emission module includes a substrate and a control drive chip arranged on one side of the substrate, at least two laser generator chips and circuit switches corresponding to the laser generator chips one by one, the circuit switch and the control drive The chip is electrically connected, the circuit switch is used to turn on or off according to the control signal output by the control drive chip, the laser generator chip is electrically connected to the circuit switch, and the laser generator chip is used to communicate with the conductive The laser generator chip connected to the circuit switch emits laser light. The technical scheme of the present invention controls at least two laser generator chips to emit light sequentially according to actual needs by controlling the drive chip, while ensuring the brightness of the FOI area, it reduces the duty cycle of the laser generator chip, reduces heat accumulation, and improves work efficiency. Efficiency, reducing the difficulty of heat dissipation.