171results about How to "Avoid heat dissipation" patented technology

The invention relates to the technical field of energy-saving control, in particular to a data center machine room comprehensive energy-saving control system and method adopting a liquid cooling mode, and the system comprises an equipment monitoring space and a hierarchical energy-saving control module, and the equipment monitoring space module monitors the working state and temperature of machine room equipment and a liquid cooling device thereof in real time through a state monitoring unit; a clustering monitoring network is constructed by using a clustering monitoring network construction unit, fine monitoring of equipment cooling energy-saving control is realized, a hierarchical energy-saving control module generates a first-level node coordination control strategy through a federated distributed control unit, and generates a second-level difference cooling energy-saving control strategy through an edge difference control unit. In addition, the system further comprises a flow distribution adjustment and evaluation feedback module, the flow distribution adjustment and evaluation feedback module distributes and adjusts the flow of the cooling liquid according to a control strategy, the flow distribution adjustment and evaluation feedback module evaluates cooling energy consumption in real time and feeds back and adjusts the control strategy, and refined monitoring and graded energy-saving control over equipment in the machine room can be achieved.

The utility model provides a transformer-based heat dissipation shell, which relates to the technical field of transformer shells and comprises a shell, a shell cover is mounted on the upper surface of the shell, a mounting hole is formed in the surface of the shell cover in a penetrating manner, a heat dissipation fan is mounted in the mounting hole, and a plurality of heat dissipation fins are arranged on the surfaces of the two sides of the shell at equal intervals. The screw rod is driven to rotate through the output end of the servo motor, meanwhile, the screw rod is made to move in the middle of the screw rod in a threaded sleeve mode, meanwhile, the screw rod can move as a guide plate, the dust screen is arranged between the inner walls of the observation openings, and the dust screen is arranged between the inner walls of the observation openings. When the guide plate moves, the guide plate drives the connecting rod and the moving plate to move at the same time, and meanwhile, the scraping plate and the brush are attached to the surfaces of the heat dissipation fins and the dustproof net to slide, so that dust on the surfaces of the heat dissipation fins and the dustproof net is cleaned, and the heat dissipation efficiency is improved.

The invention relates to an adjustable computer heat dissipation device and a heat dissipation method.The adjustable computer heat dissipation device comprises a computer mainframe box, a heat dissipation module, an adjusting module and a controller, the heat dissipation module is fixedly connected with an installation assembly, the heat dissipation module comprises fan blades and cooling fins, the fan blades are electrically connected with a driving part, and the driving part is connected with the installation assembly; the adjusting module comprises a replacement plate, a heat dissipation cavity is formed in the replacement plate, a plurality of air flow pipelines are installed in the heat dissipation cavity, the outer side walls of the air flow pipelines are sleeved with deformable rings, energy storage cavities are formed between the air flow pipelines and the deformable rings, and through holes are formed in one ends of the air flow pipelines; the controller is in signal connection with a monitoring assembly, and the controller adjusts the power of the driving part according to real-time temperature data monitored by the monitoring assembly. Compared with the prior art, the detachable and adjustable design enables the heat dissipation equipment to easily adapt to computer mainframe boxes of different models and specifications, and the heat dissipation performance can be automatically adjusted according to temperature and wind speed data monitored in real time.

The invention discloses a liquid cooling uniform cooling system for a data center. The method comprises the steps of obtaining real-time monitoring data of a data center, performing data preprocessing on the real-time monitoring data, establishing an initial Bi LSTM liquid cooling system temperature prediction model by utilizing a Bi LSTM bidirectional long-short-term memory network, performing optimization on hyper-parameters of the initial Bi LSTM liquid cooling system temperature prediction model by utilizing an ISCSO (International Standard Convergence Optimization) improved Sodat swarm algorithm, and performing optimization on the optimal hyper-parameters of the initial Bi LSTM liquid cooling system temperature prediction model. And inputting the training monitoring data into the I SCSO-B i LSTM liquid cooling system temperature prediction model for training, calculating the temperature drop rate of the data center according to the data center temperature, and if the temperature drop rate is greater than a preset rate, generating a target liquid cooling system working temperature to perform target temperature control on the liquid cooling uniform cooling system. The working temperature of the liquid cooling system is monitored and controlled in real time, the cooling strategy is rapidly adjusted according to the actual situation, and the cooling efficiency is effectively improved.

The utility model relates to the technical field of cooling fans, in particular to an improved efficient cooling fan based on a fan module, which comprises a cooling fin, a mounting rack is fixedly mounted at the top of the cooling fin, and two cooling fan bodies are symmetrically mounted on the mounting rack. According to the utility model, through the arrangement of the dustproof structure, the dustproof effect can be achieved, the dustproof net fixed through the fixing frame is arranged on the outer side of the fan frame, the dustproof net can block external dust, and the dust is prevented from being attached to the cooling fan main body and even entering the interior of the case; pollution to the interior of the case and influence on heat dissipation can be avoided, meanwhile, the two heat dissipation fan bodies are arranged to rotate in the forward direction and the reverse direction, the flowing space is arranged to be through, the wind speed flow field can be enhanced, the heat dissipation power can be improved, and the heat dissipation device can be used in cooperation with an electronic element device so as to achieve the rapid heat dissipation effect.

The invention relates to the technical field of dust cleaning devices, and discloses a dust cleaning device for a computer, which comprises a shell, a computer body and a dust flipping device, and is characterized in that the shell is mounted at the front part of the computer body, the bottom of the inner wall of the shell is slidably connected with a collecting box, and a handle is fixedly connected to the front part of the collecting box; an inclined plate is fixedly connected to the inner wall of the shell, a plurality of baffles are fixedly connected to the top of the inclined plate, a partition plate is fixedly connected to the inner wall, away from the inclined plate, of the shell, and a motor is fixedly connected to the top of the partition plate. The ventilation effect of the filter plate can be kept, unsmooth heat dissipation caused by dust accumulation is avoided, the temperature in the case is kept stable, the situation that the computing capacity of a computer body is reduced due to too high temperature is prevented, and the service life of the computer is prolonged.

The heat dissipation shell comprises a shell body, the top and the bottom of an inner cavity of the shell body are respectively provided with a buffer assembly, mounting plates and limiting corners, every four limiting corners form a group, and each group of opposite limiting corners on the mounting plates at the top and the bottom limit four corners of the top and the bottom of a single lithium battery. A plurality of through heat dissipation grooves are evenly formed in the mounting plate, and a plurality of ventilation grooves are evenly formed in the side wall of the shell. According to the heat dissipation shell for the lithium battery pack, through the arrangement of the heat dissipation grooves, the ventilation grooves, the heat dissipation fans, the buffer assemblies and the like, the lithium battery monomers can be separately fixed, and air is blown from the top and the bottom, so that heat dissipation treatment on each lithium battery monomer can be realized, and the lithium battery pack is uniform in heat dissipation; therefore, the inconsistency of the service lives of the lithium battery monomers is avoided. And the buffering performance on the lithium battery monomers is good, and the lithium battery monomers are prevented from being damaged by impact.

The invention relates to a projector heat dissipation and noise reduction method and device, equipment and a storage medium, and the method comprises the steps: obtaining the internal structure data and environment temperature information of a projector, and carrying out the thermal simulation analysis, and obtaining a corresponding thermal distribution diagram; acquiring real-time temperature data of the projector, and performing heat dissipation demand calculation on the real-time temperature data and the heat distribution diagram to obtain a corresponding real-time heat dissipation demand; acquiring light source output data and processor performance data of the projector, and predicting a real-time heat dissipation demand to obtain a corresponding heat dissipation trend; performing heat dissipation planning analysis on the real-time heat dissipation demand and the heat dissipation trend to obtain a corresponding initial heat dissipation control scheme; performing high-temperature identification on the real-time temperature data through a preset nonlinear dynamic model, and performing adjustment in combination with a heat dissipation trend to obtain a corresponding performance adjustment strategy; and analyzing the initial heat dissipation control scheme and the performance adjustment strategy to obtain a corresponding global heat dissipation noise reduction strategy. According to the invention, intelligence and refinement of heat dissipation control of the projector can be realized.

The invention discloses a server structure. The server structure comprises a mainboard; the radiator is arranged on the mainboard, and a mounting area is arranged on the radiator; the cable management buckle is arranged in the mounting area in a sliding mode, and a cable management space used for wiring of main board cables is arranged in the cable management buckle; the wire arrangement buckle can slide to be connected to the installation area or can slide to be disconnected from the installation area. According to the server structure, the installation area on the radiator is used for providing the installation area of the wire arrangement buckle, and the wire arrangement buckle is slidably arranged in the installation area, so that the wire arrangement buckle can slide off from the installation area when a cable or a mainboard device is maintained, and maintenance and inspection of operation and maintenance personnel are facilitated.

The invention relates to a rotor filling and sealing tool in the field of engine rotor manufacturing, and the rotor filling and sealing tool comprises a lower pressing ring and an upper pressing ring, a rotor structure is packaged between the lower pressing ring and the upper pressing ring, and a protection shell matched with the rotor structure is clamped between the lower pressing ring and the upper pressing ring; the protective shell comprises a main shell body, a plurality of air pipes distributed circumferentially are connected to the outer wall of the main shell body, a plurality of nozzles distributed at equal intervals are connected between the air pipes and the main shell body, a flow equalizing air plate is arranged between every two adjacent nozzles, a four-way electromagnetic valve is connected between the nozzles and the air pipes, and the output ends of the flow equalizing air plates are located on the inner side of the main shell body. The rotor structure comprises a balance end plate, the upper side of the balance end plate is provided with a plurality of uniformly distributed rotor main bodies, and the bottom ends of the rotor main bodies are clamped with auxiliary supporting plates; a plurality of groups of key holes are formed in the rotor main body, and magnetic steel is embedded in the key holes; the heat dissipation efficiency of the rotor and the magnetic steel can be easily ensured, and the rotor body or the magnetic steel can be accurately cooled.

The invention discloses a handheld terminal self-heat-dissipation structure, and relates to the technical field of electric equipment shell parts. An infrared probe and a loudspeaker are installed on the front face of a main shell, the temperature of a fire scene can be monitored through infrared scanning collection, and when the temperature of an area in front of a firefighter reaches an early warning threshold value, the firefighter can be warned out. The circuit board is arranged in the heat insulation cabin box, an alarm is sent to firefighters through the loudspeaker, the firefighters are reminded to avoid a high-temperature dangerous area in time, the safety of the firefighters in the fire scene rescue process is improved, and the circuit board is sealed in a relatively independent space through the heat insulation cabin box. By means of conduction of a first C-shaped copper pipe, a second C-shaped copper pipe and low-boiling-point liquid filled in the heat insulation cabin box and active refrigeration and cooling of a semiconductor refrigeration piece, the temperature in the heat insulation cabin box can be prevented from being too high in an active refrigeration mode, and the purpose of cooling and heat dissipation in the heat insulation cabin box is achieved; and the operation stability of the device in an extremely high-temperature fire scene can be improved.

This invention relates to the field of ultra-high performance concrete (UHVPC) curing technology, and more particularly to an intelligent temperature-controlled curing method for UHVPC. The method includes the following steps: generating preliminary temperature-controlled curing data for concrete based on UHVPC mix proportion parameters and temperature-controlled curing requirements data; analyzing the distributed temperature field characteristics of the pouring nodes using UHVPC pouring node data to generate distributed temperature field characteristic data for the pouring nodes; analyzing the temperature evolution and hydration state of the pouring node temperature field based on the distributed temperature field characteristic data and the preliminary temperature-controlled curing data to generate temperature evolution and hydration regulation state data; and performing dynamic temperature-controlled curing analysis on the preliminary temperature-controlled curing data to generate dynamic temperature-controlled curing data for the concrete. This invention achieves intelligent temperature-controlled curing by combining the application of UHVPC.

The utility model discloses camellia seed raw material heat dissipation equipment, and belongs to the technical field of camellia oil production. Camellia seed raw material heat dissipation equipment comprises a liquid storage box, a material storage box is arranged above the liquid storage box, a top cover is hinged to the top of the material storage box through a hinge, a rotating rod is rotationally arranged at the top of the liquid storage box through a bearing, and the material storage box is connected with the rotating rod through a connecting piece; a motor for driving the rotating rod to rotate is mounted on the liquid storage tank, and a liquid spraying mechanism for cooling the camellia seeds is arranged on the liquid storage tank; through the arrangement of the connecting piece, the material storage box can be taken down, camellia seeds can be conveniently put in and taken out, through the arrangement of the rotating rod and the motor, the material storage box and the camellia seeds can be driven to rotate, heat in camellia seed raw materials can be rapidly dissipated by accelerating air flow, the heat dissipation efficiency is improved, and through the arrangement of the liquid spraying mechanism, the heat dissipation efficiency is improved. When the material storage box rotates, cold water can be synchronously and intermittently sprayed into the camellia seed raw materials.

The application discloses a handheld dust collector motor drive algorithm circuit heat dissipation integrated system and relates to the technical field of control systems.The system comprises a temperature acquisition module, an operating parameter acquisition module, a thermal distribution prediction module, an active thermal management control module and an adaptive adjustment module.The application combines multi-point temperature acquisition with a three-layer structure thermal distribution prediction model to comprehensively acquire the real-time thermal state of multiple key heating elements in the motor drive circuit, simultaneously considers the bidirectional heat conduction relationship between the elements, accurately calculates the net heat power of each element, and further generates a temperature prediction curve in a future time period.The method can comprehensively reflect the overall thermal distribution of the circuit, avoid the limitations caused by single-point detection, eliminate the influence of heat transfer between the elements on temperature prediction through heat conduction coupling calculation, realize early prediction of thermal risks, and provide reliable decision basis for active thermal management.

The automatic fire extinguishing equipment comprises a protective shell, a lithium battery body is connected to the interior of the protective shell, a heat dissipation sealing mechanism is arranged on the outer side of the protective shell, and a partition fire extinguishing mechanism is arranged on the inner side of the protective shell; the heat dissipation sealing mechanism is arranged on the outer side of the protective shell, and the connecting piece, the multiple sealing blades, the first supporting arm, the second supporting arm, the extending plate, the transmission piece and the adjusting rod are arranged in a series linkage mode, so that the first motor can synchronously adjust the opening or closing state of the multiple sealing blades when being controlled and driven; in the normal working process of the lithium battery body, efficient heat dissipation is achieved in cooperation with the ventilation pipe and the heat dissipation fan, the ventilation channel can be rapidly closed when temperature rises abnormally, external air is prevented from entering the protection shell, and the combustion condition is weakened from the environment level.

The utility model provides a silicone oil production stirring kettle convenient for heat dissipation, which comprises a stirring kettle main body, a heat dissipation box body for placing cooling liquid is arranged below the stirring kettle main body, a snakelike heat dissipation pipe is arranged in the heat dissipation box body, and a pump body is arranged on the side wall of the heat dissipation box body. One end of the snakelike heat dissipation pipe penetrates through the top of the heat dissipation box body and is connected with the discharge pipe, the other end of the snakelike heat dissipation pipe penetrates through the side wall of the heat dissipation box body and is connected with the liquid inlet end of the pump body, a flow guide pipe is arranged at the liquid outlet end of the pump body, a three-way valve is arranged at the top of the flow guide pipe, and a backflow pipe used for communicating with the interior of the stirring kettle body is arranged at the top of the three-way valve; a backflow valve is arranged on the side wall of the backflow pipe, a discharging pipe is arranged on the side wall of the three-way valve, a discharging valve is arranged on the side wall of the discharging pipe, and a first temperature sensor is arranged on the side wall of the flow guide pipe and used for closing the discharging valve and opening the backflow valve when the temperature of flowing-through silicone oil is detected to exceed a set value. And the heat dissipation effect is good.

The invention provides a laser light source system and projection equipment. The laser light source system comprises a laser light source, a fluorescent wheel and a color filter wheel, the fluorescent wheel comprises at least one first area arranged in the circumferential direction, the first area is a fluorescent area, the color filter wheel comprises at least one second area arranged in the circumferential direction, and the second area is a light filter area arranged corresponding to the first area; wherein when the rotating speed of the color filter wheel is larger than that of the fluorescent wheel, and the rotating speed of the color filter wheel is m times of that of the fluorescent wheel, the number of the second areas is 1 / m of that of the first areas, and the ratio of the circle center angle of each second area on the color filter wheel is m times of the ratio of the circle center angle of the corresponding first area on the fluorescent wheel. In this way, under the condition that the rotating speed of the color filter wheel is larger than that of the fluorescent wheel, synchronous switching of the second area on the color filter wheel and the first area on the fluorescent wheel is achieved, the color mixing time is shortened, and the display effect is improved.

The invention relates to a high-voltage motor with a cooling circulation system, which is applied to the field of motor cooling, and comprises a machine body and a cooling circulation pump, the outer wall of the machine body is fixedly connected with a plurality of cooling plates, the plurality of cooling plates are fixedly connected, and connecting pipes are fixedly connected between the input end and the output end of the cooling circulation pump and the two cooling plates respectively. The two cooling plates connected with the two connecting pipes are adjacent, through holes are formed between the multiple cooling plates, and cooling fins are fixedly connected to one ends of the cooling plates. Through the arrangement of the central driver and the auxiliary cooling device, the position, with the too high temperature, of the machine body can be subjected to heat dissipation in a targeted mode in the working process; the water flow is prevented from affecting subsequent heat dissipation when passing through the position, with the too high temperature, of the machine body, the overall heat dissipation effect is improved, the auxiliary heat dissipation device can provide a better heat dissipation effect on the position, with the too high temperature, of the machine body through the arrangement of a transmission belt and other devices, and the overall heat dissipation effect of the machine body is improved again.

The invention relates to the field of thermal management of battery systems, in particular to a design method of a forced air cooling battery system box with an IP67 protection grade. The method comprises the following steps: acquiring temperature sensor data of a battery module, and carrying out temperature change monitoring to obtain real-time temperature distribution; obtaining a temperature data sequence of each battery module from the sensor network, carrying out temperature difference analysis, and determining the position of the module with uneven heat dissipation; processing the temperature data, generating wind speed adjusting parameters, and dynamically adjusting the wind speed and the airflow path of the air cooling system; and based on the multi-physical field simulation result and the temperature data, optimizing the heat dissipation and protection structure of the battery box body, and generating an updated heat dissipation optimization scheme. On the premise of ensuring the IP67 protection level, the heat dissipation performance of the battery system can be optimized, the problems of uneven heat dissipation and local overheating are avoided, and the reliability and safety of the system are improved.

The utility model discloses a 3D uniform temperature plate with heat pipe connecting capillary ring, it includes lower cover, lower capillary structure layer, upper cover, upper capillary structure layer and heat pipe. The top surface of upper cover is provided with a plurality of mounting seats that are inverted funnel shape, the upper capillary structure layer is covered on each copper powder capillary ring of lower cover setting, and the upper capillary structure layer is formed with the upturned edge along the inner wall of mounting seat and extends upward, a plurality of heat pipes are correspondingly inserted in a plurality of mounting seats, and the heat pipe includes pipe body and pipe mouth, and the pipe mouth is attached and communicated with the mounting seat, and the heat pipe in the cavity of uniform temperature plate is formed with the capillary structure that extends from the pipe body to the pipe mouth. Among them, the heat pipe connecting capillary ring is still fixed in the mounting seat, the heat pipe connecting capillary ring is in abutment with the inner wall of pipe mouth, and the upturned edge is in abutment on the inner wall of mounting seat, which constitutes the stable connection of heat pipe and capillary structure in the cavity, and liquid medium can flow to the heat pipe connecting capillary ring under the guidance of the funnel-shaped contour of pipe mouth, and then return to the cavity through the upper capillary structure layer.

The utility model relates to the technical field of pulse control instruments, and discloses a pulse control instrument with a good heat dissipation effect, which comprises a pulse control instrument shell, and the bottom of the inner cavity of the pulse control instrument shell is fixedly connected with a fixed box; by arranging the pulse controller shell, the circuit board, the fixed box, the positive and negative motor, a screw rod, a sliding block, a connecting block, a limiting rod, a protection box, a rotating motor and rotating fan blades, in the using process of the pulse controller, when heat dissipation needs to be conducted on the circuit board, the rotating motor is turned on and drives the rotating fan blades to rotate through an output shaft, and heat dissipation is conducted on the circuit board; heat on the surface of a circuit board is cooled through air cooling, then a forward and reverse motor is started, a screw rod can drive a sliding block to vertically reciprocate, the sliding block can drive a rotating fan blade to vertically reciprocate, and therefore comprehensive heat dissipation is conducted on the circuit board, the problem that heat dissipation of the circuit board is not comprehensive is avoided, and the heat dissipation efficiency of the circuit board is improved.

The food processor comprises a main machine, a cup body assembly and a motor assembly, the cup body assembly and the motor assembly are installed on the main machine, a machine shell is provided with an air inlet, an air outlet and an extending hole for a motor shaft of the motor assembly to extend out, the motor assembly comprises an upper cover, a lower cover and a motor, and the upper cover is connected with the machine shell in a sealed mode to seal the extending hole; the upper cover and the lower cover clamp the motor and form a heat dissipation air channel inside, the upper cover and the lower cover are respectively provided with an air inlet hole and an air outlet hole which are communicated with the heat dissipation air channel, the air inlet hole is located above the heat dissipation air channel, and air flows into an inner cavity of the main machine from the air inlet, passes through the air inlet hole, the heat dissipation air channel and the air outlet hole from top to bottom and then flows out from the air outlet. Air flow can be directly injected into the heat dissipation air channel from the upper portion of the motor, flows vertically downwards and directly and is finally discharged out of the air outlet holes, reciprocating operation in the motor cover is not needed, and the heat dissipation efficiency of the air flow is improved. In addition, the size of the main machine can be compressed, and finally a simple, efficient and small food processor is provided for consumers.

The invention relates to the technical field of variable frequency control cabinets, and provides a variable frequency control cabinet with intelligent heat dissipation. The design combines a control module, a cooling system, a dynamic water removal system and a wind heat dissipation system. On the one hand, the cooling speed of air can be automatically adjusted according to the change of the operating load of electronic components, so as to achieve the purpose of intelligent cooling and heat dissipation, and can prevent the phenomenon of insufficient heat dissipation or excessive heat dissipation caused by the mismatch between the cooling speed and the heating speed of the electronic components, so that the electronic components can keep running in a better state for a long time. On the other hand, the heat dissipation and drying of the variable frequency control cabinet are combined, which can not only ensure that the water absorbent can regain the ability to dry, but also maintain the normal heat dissipation of the cabinet, and has the characteristics of intelligent heat dissipation and dynamic water removal and drying.

The utility model discloses a kind of electric energy converters of hydrogen fuel cell with heat dissipation structure, it is related to electric energy converter technical field, and include: converter housing, multiple heat dissipation air ducts are set in the both sides of converter housing;Heat dissipation device one, it is provided with two, and is respectively installed in the both sides of converter housing, two converter housings play the role of heat dissipation and mutual cleaning when starting simultaneously or respectively;Heat dissipation device two, it is installed on converter housing, and the airflow generated by heat dissipation device one is guided to accelerate heat dissipation;The utility model is installed in the both sides of converter housing by setting two heat dissipation device one, cooperate the heat dissipation air duct on converter housing to form convection airflow, can quickly bring out the heat in the inside of converter, simultaneously, two heat dissipation device one can realize the function of mutual cleaning by reverse operation, avoid heat dissipation device one jamming to affect heat dissipation.

The utility model relates to the technical field of high-temperature dehydration, in particular to high-temperature dehydration equipment with a protection structure, which comprises a dehydrator main body, a bearing mechanism is fixedly connected to the bottom of the dehydrator main body, and a high-temperature heating mechanism is fixedly connected in the bearing mechanism. The top end in the high-temperature heating mechanism is fixedly connected with a centrifugal rotating mechanism, the bottom of the dehydrator main body is fixedly connected with a recycling and filtering mechanism, the recycling and filtering mechanism comprises an air extractor, a filter pipe and a recycling box, and the inner side of the dehydrator is fixedly connected with a protection mechanism. According to the high-temperature dehydration equipment with the protection structure, due to the arrangement of the air extractor, the filter pipe and the recovery box, when the high-temperature dehydration equipment is used, after dried raw materials are extracted by the air extractor, large-particle impurities are filtered out through the filter pipe, and then the raw materials are collected in the recovery box, so that the raw materials are convenient to take and use by production personnel, and the production and processing quality of the raw materials is improved.

The present invention relates to the technical field of preparation of silicon carbide single crystals, and in particular to a device and method for growing cylindrical silicon carbide single crystals by a liquid phase method. The device includes a heat dissipation control device installed above a silicon carbide seed crystal, including six edges with an angle of 60° and equal length, the endpoints of each edge away from the center are connected by a circular arc concave toward the center, and different edges are connected by a downwardly concave curved surface. The thickness of the portion where the edge is located is the largest, and the heat dissipation is the slowest. The thickness of the position of the bisector of the angle formed by two adjacent edges is the smallest, and the heat dissipation is the fastest; the crystal direction of the seed crystal is controlled to be consistent with the direction of the edge, and the crystal direction of the seed crystal is consistent with the angle bisector of two adjacent edges. The present invention provides a device and method for growing cylindrical silicon carbide single crystals by a liquid phase method, which can effectively suppress the anisotropy of the growth rate of silicon carbide crystals in liquid phase growth, and prepare cylindrical silicon carbide crystals to reduce the difficulty and cost of wafer processing.

The application discloses a mud generator torque control method and system, and belongs to the technical field of well drilling engineering. The method comprises the following steps: performing phase identification on three-phase alternating current output by a mud generator through a digital processor, generating a PWM driving signal based on phase information, controlling the conduction and shutdown of a power switch tube connected with a generator winding, adjusting the current of a generator stator winding, and completing the control of the output torque of the generator. The application performs phase identification on three-phase alternating current through a digital processor and generates a PWM driving signal, realizes accurate control of the output torque of the generator, directly adjusts the current of the stator winding, and avoids the heat dissipation and space problems caused by the traditional resistance dissipation mode.

The present invention discloses a vehicle lighting device, which relates to the field of vehicle lighting devices, and comprises a lighting lamp housing, wherein the lighting lamp housing comprises a lower rectangular frame and an upper rectangular frame which are spliced ​​to each other, an internal mounting plate is arranged at the position where the lower rectangular frame and the upper rectangular frame are spliced ​​to each other, and a lighting mechanism and a heat dissipation mechanism are arranged on the lighting lamp housing. In the present invention, by arranging the heat dissipation mechanism on the lighting lamp housing, external cooling air can be separated from the internal structure of the lighting lamp housing, but the external cooling air can discharge the heat inside the lighting lamp housing evenly and in large volume, thereby ensuring high heat dissipation while not easily adding particle dust to the inside of the lighting lamp housing, thereby maintaining a long service life of the lighting lamp housing.

The utility model discloses a flow regulating valve suitable for high temperature and high pressure conditions, which belongs to the technical field of flow regulating valves, and comprises a valve body, the left side of the valve body is fixedly communicated with a filter box, the left side of the filter box is provided with a valve assembly, and the surface of the valve body is provided with a heat dissipation mechanism. A heat dissipation assembly is arranged on the left side of the heat dissipation mechanism, a mounting block is connected to the surface of the valve body in a bolting mode, a protection rod is arranged on the front side of the mounting block, an air box is arranged on the rear side of the valve body, and a protection assembly is connected to the front side of the air box in a bolting mode. The problems that heat dissipation fins are usually arranged on the surface of a valve body in a sleeving mode, active auxiliary heat dissipation work on the valve body is inconvenient, the heat dissipation efficiency is limited, heat dissipation parts of most valve bodies can generate a large amount of heat, workers are prone to being scalded when touching the heat dissipation parts by mistake, and the use effect is affected are solved.

The utility model provides a hydrogen fuel cell control device for a heavy truck, which comprises a controller body, radiating fins arranged on the upper surface of the controller body, protective vertical plates arranged on the front and rear sides of the radiating fins, semiconductor chilling plates arranged on the upper surfaces of the radiating fins, mounting racks arranged on the outer sides of the protective vertical plates, and mounting boxes arranged on the left and right sides of the mounting racks, a mounting plate is fixedly mounted on one side of the mounting box, a servo motor is fixedly mounted on the mounting plate, and a cooling fan is arranged at the output end of the servo motor. According to the hydrogen fuel cell control device for the heavy truck, through the semiconductor chilling plate with the bottom surface coated with heat conduction silicone grease, the heat conductivity of the semiconductor chilling plate can be enhanced, temperature conduction can be accelerated, so that the heat dissipation efficiency is improved, two sets of heat dissipation fans distributed on the left and right sides of the heat dissipation fins are arranged, and the heat dissipation fans are started alternately, so that the heat dissipation efficiency is improved. Therefore, air convection can be enhanced, the heat dissipation effect is uniform, heat dissipation in the heat dissipation fins is accelerated, and the heat dissipation effect is further improved.