343 results about "Surface heat" patented technology

The invention relates to the technical field of tunnel engineering safety, in particular to a tunnel fire multi-stage damage collaborative prediction method and system, and the method comprises the steps: constructing a data simulation fusion model, and carrying out the processing of fire and tunnel structure parameter data, and obtaining a multi-working-condition parameter database; constructing a heat conduction equation, a fire plume and wall surface heat exchange relational expression, a boundary layer correction model and a comprehensive damage evaluation model, and analyzing the equation, the relational expression and the model by utilizing a multi-physical field coupling unified boundary condition to obtain a multi-physical boundary constraint condition; obtaining a multi-physical constraint loss function based on a network architecture and a multi-physical boundary constraint condition, and further obtaining a comprehensive constraint loss function of a temperature field-stress field-damage index; constructing a PINN-LSTM network architecture and a damage evolution analysis model based on the fire ending initial state coding vector, the fire course feature vector and the cooling process feature vector; and performing linkage analysis on the function, the frame and the model to predict and monitor the transient damage and the long-term creep damage of the tunnel.

The invention relates to the technical field of metal surface heat treatment, and discloses a fixed inductor for high-speed rail axle surface induction quenching, which comprises a busbar, a fixed plate, a cooling water sprayer and an effective geometry heating ring, the busbar is used for fixing the effective geometry heating ring and forms an electrifying passage and a water passing passage with the effective geometry heating ring with the hollow structure; the effective geometric body heating ring comprises three sections of straight section induction pipe bodies with different lengths and two sections of arc induction annular bodies, the straight section induction pipe bodies are arranged according to the lengths D1, D2 and D3, the straight pipe section D1 and the straight pipe section D2 are in arc transition through an R1, the straight pipe section D2 and the straight pipe section D3 are in arc transition through an R2, and the three straight pipe sections are parallel to one another and progressive inwards layer by layer; and the radians of the two sections of arc induction annular bodies are 90 degrees. According to the invention, one-time and global synchronous induction heating can be carried out on multiple sections of shaft necks and transition R-angle areas with complex geometrical shapes and obvious stress concentration at the two ends of the axle.

The invention discloses a lithium battery module structure with an internal thermal management channel, and belongs to the technical field of battery management.The lithium battery module structure with the internal thermal management channel comprises an outer shell and a lithium battery pack, and a top cover is installed at the top of the outer shell; two sets of wire inlet and outlet holes are symmetrically formed in the middle positions of the two ends of the outer shell, a protection mechanism is arranged in the outer shell, and a first channel mechanism used for allowing cooling liquid to flow is arranged in the inner wall of the protection mechanism. The heat dissipation grooves are formed in the two sides of the protection bin, a plurality of channels are divided through the n-shaped heat conduction strips, one end of each internal heat conduction rod extends to the liquid outlet channel, waste heat of cooling liquid and heat conducted to the bin wall by a battery can be guided out, heat dissipation of the surfaces of the heat conduction rods is accelerated through the fans in the heat dissipation grooves, and the design constructs a liquid cooling and air cooling synergistic heat dissipation mode; the overall heat dissipation effect is further enhanced, and the heat management capacity of the module under different working conditions is guaranteed.

The invention discloses a humanoid robot bionic skin heating temperature control method, and belongs to the technical field of robot automatic control, and the method comprises the following steps: obtaining real-time temperature distribution data of a bionic skin surface, carrying out time domain differential processing to generate temperature change rate data, and combining the obtained real-time pressure distribution data to construct a contact surface heat conduction characteristic; and generating a basic heat energy supply strategy based on the steady-state components in the heat conduction characteristics of the contact surface, performing dynamic weighted fusion on the basic heat energy supply strategy and an instantaneous heat flow disturbance compensation amount calculated based on the instantaneous dynamic components in the heat conduction characteristics of the contact surface, generating a control heating instruction, and driving a heating unit in the bionic skin to execute a heating action. The real-time pressure and the temperature change rate are integrated to construct the heat conduction characteristic of the contact surface, and the characteristic is decomposed into a steady-state component and an instantaneous dynamic component for feed-forward compensation control, so that predictive compensation can be performed on external thermal disturbance, and rapid and stable control on the temperature of the bionic skin is realized.

The invention discloses an active infrared thermal imaging thermal diffusion parameter inversion method and system based on a physical information neural network, and belongs to the technical field of infrared thermal imaging nondestructive testing and thermophysical parameter identification. In order to solve the problems that an active infrared thermal imaging method is difficult to steadily invert spatial distribution thermal diffusion parameters under the condition of only single-side surface temperature measurement and is sensitive to measurement noise, the method comprises the following steps: collecting surface space-time temperature field data of a tested piece under thermal excitation, and calculating a relative temperature field; normalizing the space-time coordinates, and constructing a multi-output physical information neural network; the equivalent surface heat conduction equation and the boundary and initial conditions thereof serve as a loss function of a physical constraint embedded neural network, and a Huber loss function is adopted to calculate a data fitting item; a neural network is optimized through joint training, a global volume thermal diffusion coefficient, a global equivalent thermal loss coefficient, a relative thermal diffusion coefficient field and a relative thermal loss coefficient field of spatial distribution are synchronously inverted, and a high signal-to-noise ratio temperature field is reconstructed. The method is used for material surface nondestructive testing.

The present application relates to the technical field of heat dissipation of apparatuses. Disclosed are a heat dissipation device and a communication apparatus. The heat dissipation device comprises a first liquid cooling plate, a second liquid cooling plate, a first liquid dispenser and a second liquid dispenser. The first liquid cooling plate is configured to be attached to a chip, and comprises a first inner channel through which a cooling working medium flows to take away surface heat, and a first liquid inlet and a first liquid outlet, which are in communication with the first inner channel. The second liquid cooling plate is configured to be attached to an optical module, and comprises a second inner channel through which the cooling working medium flows to take away the surface heat, and a second liquid inlet and a second liquid outlet, which are in communication with the second inner channel. One end of the first liquid dispenser is in communication with the first liquid inlet and the second liquid inlet, and the first liquid dispenser is configured to supply the cooling working medium to the first inner channel and the second inner channel. The heat dissipation device and the communication apparatus provided in the embodiments of the present application can improve the heat dissipation capability for a heating component.

The application discloses a metal surface heat treatment device with a self-diagnosis function and a treatment method, relates to the technical field of metal heat treatment devices, and comprises a main base, the upper surface of the main base is provided with a cooling soaking pool, and the upper surface of the main base is further provided with an auxiliary mechanism; the auxiliary mechanism comprises a material conveying component and a gas collecting assembly; the material conveying component comprises a conveying frame body arranged on the upper surface of the cooling soaking pool and provided with a feeding conveyor belt on the upper surface; the gas collecting assembly is composed of a detection component and a processing component; the gas collecting assembly comprises a side base connected with one side surface of the main base, and the upper surface of the side base is provided with a treatment box body; and the processing component comprises a regenerative catalytic oxidizer and a receiving pool. In the scheme, the gas collecting assembly can intelligently collect organic mist generated during metal quenching, and the organic mist is treated through condensation or catalytic decomposition; in addition, the treatment product can be reused to improve the performance of the cooling liquid.

The utility model relates to cold machine cabinet technical field, concretely is a multipurpose liquid cooling machine cabinet, including the cabinet, the cabinet one side outer wall rotationally connected has the apron, the cabinet inner wall is provided with the equipment frame, the equipment frame is provided with the hollow, the equipment frame bottom outer wall is provided with a plurality of air flow channels, the cabinet bottom fixedly connected with the liquid collecting tank, the utility model discloses through the liquid pump drive cooling liquid in the liquid collecting tank, is transported to the equipment frame through the second liquid hose, utilizes the heat conductivity of equipment frame and absorbs the equipment heat in the machine cabinet, again through the first liquid hose and flows back to the liquid collecting tank, realizes closed cycle cooling. At the same time, the air pump of rotating air inlet mechanism injects air into the bottom tank through the air inlet pipe, enters the gas distribution pipe through the guide hole of rotating shaft, and then sprays upward through the air outlet pipe of the air guide plate, forming the airflow from bottom to top, which carries away the heat on the surface of the equipment through the airflow channel at the bottom of the equipment frame, and forms a "three-dimensional" heat dissipation network with the liquid cooling system.

The invention relates to the technical field of high-temperature-resistant coatings, in particular to a method for repairing a high-temperature-resistant environmental barrier coating, which comprises the following steps of: pretreating a to-be-repaired area on the surface of a ceramic matrix composite material; the surface to-be-repaired area is coated with prepared bonding layer slurry, curing treatment is carried out, and a first bonding layer is obtained; coating the outer surface of the first bonding layer with the bonding layer slurry, and performing curing treatment to obtain a second bonding layer; the outer surface of the second bonding layer is coated with prepared middle layer slurry, curing treatment is conducted, and a middle layer is obtained; coating the outer surface of the middle layer with prepared surface layer slurry, and performing curing treatment to obtain a surface layer; and carrying out surface heat treatment on the ceramic-based composite material coated with the surface layer to obtain the high-temperature-resistant environmental barrier repair coating. The repairing method of the high-temperature-resistant environmental barrier coating aims at solving the problem that the external field repairing difficulty of the local damaged area of the environmental barrier coating on the surface of the ceramic matrix composite is large.

The invention belongs to the technical field of antenna array surface testing, and discloses a general testing device for a large-aperture antenna array surface, which is formed by splicing a plurality of general testing modules, and is characterized in that each general testing module comprises a frame body, and the frame body is provided with an array surface mounting assembly, an array surface heat dissipation assembly and a module locking assembly; the array surface mounting assembly comprises guide rails and a lifting device, the guide rails comprise a plurality of vertical guide rails and horizontal guide rails, the horizontal guide rails are arranged on the vertical guide rails in a lifting manner through the lifting device, the horizontal guide rails are provided with adjusting modules used for mounting antenna array surfaces, and the array surface heat dissipation assembly provides heat dissipation air for the antenna array surfaces. The module locking assembly is installed on the side face of the bottom of the frame body and comprises an adjusting pull rod and a ground rail locking device, the adjusting pull rod locks the adjacent universal test modules, and the ground rail locking device fixes the frame body and the ground rail. The universal test device can meet the test of antenna array surfaces with different specifications and sizes, especially large-aperture antenna array surfaces.

The invention relates to the technical field of thermal control coatings, in particular to a liquid metal commercial aerospace thermal control coating adaptive to extreme temperature difference, which comprises a substrate binding layer and a thermal control functional layer, the thermal control functional layer is arranged on the side wall of the substrate binding layer, a thermal circulation pipe is arranged in the thermal control functional layer, and a composite heat conduction layer is arranged on the side wall of the thermal control functional layer. A limiting stabilizing layer is arranged on the side wall of the composite heat-conducting layer. By arranging the multi-layer composite structure and the liquid metal, efficient heat regulation and control in an extreme temperature difference environment are achieved, the substrate combination layer is made of a radiation-resistant material, it is ensured that the structure stability is kept in a strong radiation environment, the liquid metal material in the heat control function layer and a cross circulation plate form a three-dimensional heat conduction network through a disc-shaped heat control circulation pipe, and the heat conduction efficiency is improved. And by arranging the separation cavity, atomic oxygen erosion is effectively blocked, and the inorganic thermal control coating layer of the separation cavity can adjust the surface thermal radiation characteristic.

The present application provides a kind of thin-walled deep hole outer thread screw rod processing clamp device and processing method, the clamp device includes clamp assembly, clamp assembly includes first clamping end cap and second clamping end cap, first clamping end cap and second clamping end cap are connected with the both ends of screw rod sample respectively, first clamping end cap includes the cooling pipeline passing through in screw rod sample inside, cooling pipeline is opened with multiple face-to-face screw rod sample inner wall's jet. The clamp device can process the screw rod sample of large stroke thin-walled deep hole, and clamp assembly can be installed on the support table assembly in prior art, can improve adaptability and universality, reduce the production difficulty of screw rod sample, the inner wall of screw rod sample can be temperature controlled by cooling pipeline to ensure cooling efficiency offset the influence of thin-walled outer surface heat production, accurately inhibit thin-walled thermal deformation, to avoid screw rod sample to produce thermal deformation, ensure the consistency of the diameter of shaped product, improve product quality, reduce processing difficulty.

This application belongs to the field of injection molding technology, specifically relating to a waste heat recovery system for injection molding processes. The system includes: a material supply subsystem, an injection molding subsystem, a cooling subsystem, and a waste heat recovery subsystem. The waste heat recovery subsystem includes: an air compressor and a surface heat exchanger; the surface heat exchanger is connected to both the injection molding subsystem and the cooling subsystem via water pipes; the air compressor is connected to the material supply subsystem via an air pipe; the surface heat exchanger absorbs both low-grade and high-grade waste heat generated by the injection molding subsystem, using the absorbed waste heat to heat the compressed air generated by the air compressor, and then supplies the heated compressed air to the material supply subsystem via the air pipe; the material supply subsystem provides plastic raw materials to the injection molding subsystem, which then performs injection molding on the plastic raw materials; this system can be used in the Industrial Internet, realizing the tiered recovery and reuse of waste heat from the injection molding process, reducing energy and water consumption in the cooling subsystem.

The invention relates to the field of feeding devices, in particular to an automatic feeding device of surface heat treatment equipment. The feeding device comprises a movable base and a feeding frame. The movable base comprises a feeding table; a movable feeding structure is arranged on the feeding table; the feeding frame comprises a feeding seat; a lower rotating table and an upper rotating table are sequentially arranged above the feeding seat; a circle of feeding columns and a circle of series connection columns are arranged between the lower rotating table and the upper rotating table; a plurality of groups of discharging pieces are arranged on the series connection column in the vertical direction; a plurality of groups of feeding pieces are arranged on the feeding column in the vertical direction; the feeding pieces are matched with the discharging pieces connected to the series connection columns in series in a one-to-one correspondence mode. Through macroscopic cooperation of the movable base and the feeding frame and microcosmic linkage of core components in the feeding frame, a planetary feeding structure is formed, an efficient, accurate, flexible and reliable automatic feeding system is constructed, and the technical problems of low feeding efficiency, poor uniformity, tedious operation and the like are effectively solved.

The invention relates to the technical field of metal material hot working technologies, in particular to a casting blank temperature field and structure evolution regulation and control method which comprises the steps that firstly, a three-dimensional finite element model is established based on the casting blank size and material parameters, temperature field simulation is conducted by setting different surface comprehensive heat exchange coefficients, and section temperature difference and heat transfer efficiency data are obtained; determining an optimized heat exchange condition; secondly, selecting a key temperature point based on temperature field characteristics disclosed by simulation to carry out a heat treatment experiment, establishing a quantitative relation among the heating temperature, the heat preservation time and the grain size, and determining a critical temperature and a critical heat preservation time for remarkable coarsening of the grains; and finally, in the actual heating process, the surface heat exchange boundary is controlled according to the optimized heat exchange conditions, and a heating curve and heat preservation time are set according to the quantitative relation and the critical parameters, so that the casting blank with the uniform section temperature and controlled grain coarsening is obtained. According to the method, precise cooperative regulation and control in the large casting blank heating process are achieved.

The embodiment of the utility model provides a charging device and a charging pile, and the device comprises a bottom shell which is provided with a first surface and a second surface which are arranged oppositely, and the second surface is provided with a heat dissipation assembly; the circuit board group is arranged on the first surface, and the board surface of the circuit board group is provided with a main heating area and a secondary heating area; the top shell is connected to the first surface of the bottom shell to form an inner cavity, and the circuit board group is located in the inner cavity; the first surface is provided with at least one concave open cavity and at least one main heat dissipation area, the main heating area is arranged corresponding to the main heat dissipation area, and the secondary heating area is arranged corresponding to the open cavity; the heat dissipation assembly comprises a first heat dissipation piece and a second heat dissipation piece, and the heat dissipation area of the second face of the first heat dissipation piece is larger than that of the second face of the second heat dissipation piece. According to the technical scheme, the heat dissipation effect of the first heat dissipation piece is better than that of the second heat dissipation piece, the main heating area on the circuit board group can dissipate heat in time under the condition that the size of the charging device is appropriate, and the situation that the output power of the charging device is affected due to heat accumulation of the circuit board is effectively avoided.

The invention relates to a high-thermal-conductivity high-temperature solar photothermal conversion coating and a preparation method and application thereof, and belongs to the technical field of new energy materials. According to the method, a high-thermal-conductivity Sr or Ca-doped LaCoO3 oxide material is used as a main component of the coating, and double-layer spraying preparation of a body layer and a surface layer is adopted. Compared with a traditional spinel oxide-based coating, the coating prepared through the method has the advantages that the heat conductivity is remarkably higher, meanwhile, the high light absorption rate (higher than 95%) and the low emissivity (lower than 0.65) are achieved, surface heat radiation and heat convection loss are remarkably reduced under the high-temperature working condition, and therefore the photo-thermal conversion efficiency is improved. The photo-thermal conversion efficiency of the coating is remarkably higher than that of a commercial product PyroMark2500, and the preparation method is simple, low in cost and capable of achieving large-scale production.

The application relates to the field of electrical cabinets, in particular to a protection structure and an electrical cabinet of electrical equipment. The protection structure and the electrical cabinet of electrical equipment comprise a retracting device, the retracting device comprises a retracting mounting shell, a retracting connecting block, a retracting sliding groove and a screw slot, the protection mechanism comprises a protection mounting groove, a protection mounting plate, a rectangular groove, a rectangular sliding block and a protection baffle, and the rotating mechanism is symmetrically mounted on the side surface of the protection baffle and is fixedly connected with the surface of the protection mounting plate. The protection structure and the electrical cabinet of electrical equipment have the advantages that the retracting device, the protection mechanism and the rotating mechanism are installed, the main body position of the side surface heat dissipation hole of the electrical cabinet main body is effectively protected without affecting the working of the heat dissipation hole main body, and the damaged protection baffle can be conveniently and quickly replaced.

The developing roller comprises a conductive shaft core, a heat dissipation transition layer, a conductive elastic layer and a surface heat dissipation developing layer, the conductive shaft core is of a hollow structure, and a main heat dissipation channel penetrating in the axial direction is formed in the conductive shaft core; according to the developing roller facilitating heat dissipation for the laser printer, the heat dissipation efficiency is extremely high, overheating aging is avoided, a complete heat dissipation system of surface dissipation, middle transmission and internal export is constructed, the heat dissipation area is increased through a surface net-shaped heat dissipation structure, the heat dissipation efficiency is improved, and the heat dissipation efficiency is improved. The heat dissipation transition layer rapidly transfers heat, and the hollow conductive shaft core and the heat dissipation fins at the two ends accelerate export of internal heat, so that friction heat and Joule heat generated in the working process of the developing roller can be rapidly dissipated, aging and deformation of parts caused by heat accumulation are avoided, and the service life of the developing roller is prolonged.

This application relates to at least one method and apparatus for constructing an equivalent heat source model for mobile high-frequency induction heating. The method includes: acquiring instantaneous temperature data at at least one temperature measurement point on a workpiece to be processed; determining the electromagnetic performance parameters of the workpiece under heating conditions based on the instantaneous temperature data; constructing and calculating an electromagnetic field model based on the electromagnetic performance parameters to obtain the eddy current density distribution on the surface of the workpiece; determining the shape parameters and efficiency parameters of one or more equivalent surface heat sources corresponding to the induction heating device based on the eddy current density distribution; constructing a pure heat conduction model based on the shape parameters, efficiency parameters, and a preset initial value for energy distribution morphology parameters; and calibrating the energy distribution morphology parameters by comparing the instantaneous temperature data with the calculation results of the pure heat conduction model. This method decomposes the complex mobile multi-field coupling problem into a series of efficient and high-precision steps, effectively balancing the physical accuracy and computational efficiency of the equivalent heat source model construction.

The utility model provides an outdoor attendance machine with a protective cover for attendance performance management, which belongs to the technical field of attendance equipment and comprises a shell, an attendance mechanism used for entrance guard and recording personnel access is arranged in the shell, and a heat dissipation component used for promoting air circulation in the shell is arranged on one side of the shell. According to the attendance checking mechanism, the protective cover is manually pushed upwards, the magnetic attraction block and the metal layer are close to each other to generate magnetic attraction force, so that an operation area of the attendance checking machine is exposed, the camera transmits acquired image data to the mainboard, and the mainboard transmits the image data to the wireless network module; the wireless network module sends attendance data to an external performance evaluation system, the rotating rod and the fan blades are driven to rotate through the arranged heat dissipation assembly and the micro motor, external air enters the shell through the ventilation holes, absorbs heat on the surfaces of the internal parts and then is discharged from the heat dissipation holes, and stable operation and performance of the attendance machine are guaranteed.

The utility model belongs to the technical field of leisure chair production, and particularly relates to a chair surface heat sealing machine which comprises a machine body, the lifting cylinder is arranged on the rack; the hot pressing plate is arranged at the driving end of the lifting cylinder, and a plurality of steam cavities are formed in the hot pressing plate; the workbench is rotationally arranged on the machine body and located below the hot pressing plate; the stepping motor is arranged on the machine body and located on one side of the workbench. The multiple pressing pieces are evenly distributed on the edge of the workbench. Wherein the hot pressing plate can be driven by the lifting cylinder to ascend and descend, the workbench can be driven by the stepping motor to rotate, the pressing piece is used for pressing the chair face, and compared with the prior art, the working efficiency of the chair face heat sealing machine and the heat sealing effect of the chair face are effectively improved.

The application discloses a compact air-water cooling integrated engine structure and relates to the technical field of air-water cooling integrated engines.The compact air-water cooling integrated engine structure comprises an engine main body, a heat conduction assembly arranged on the front face of the engine main body, and an air guide cover arranged on the front face of the heat conduction assembly. A water tank is arranged on the front face of the air guide cover, a water outlet is formed in the right side of the water tank, two water inlets are formed in the front face of the water tank, a water pump is fixed to the left side of the front face of the air guide cover, a water suction inlet is formed in the bottom face of the water pump, and a water outlet is formed in the top face of the water pump. In the reciprocating movement of the semiconductor refrigeration sheet, the heat on the surface of the liquid suction pipe and the return pipe is absorbed, so that the problem that the cooling liquid in the water tank is accumulated with heat and the temperature of the cooling liquid in the water tank is continuously increased, thereby causing the air cooling and water cooling of the engine main body to be simultaneously poor in cooling effect is avoided.

The invention relates to a surface heat exchanger, in particular for an aircraft nacelle, comprising a first metal sheet (2) and a second metal sheet (3) assembled together and a plurality of distribution channels (4) for a fluid arranged between the first metal sheet (2) and the second metal sheet (3), the exchanger further comprises an inlet interface (5) and an outlet interface (6) for the fluid. The exchanger further comprises distribution means defining, for each distribution channel (4), a flow cross-section of a fluid through which each of the distribution channels (4) is connected to the inlet interface (5) and the outlet interface (6), the distribution channels (4) being distributed over the entire periphery of the inlet interface (5) and / or the outlet interface (6).

The invention discloses a defrosting control method and device of an air conditioner, the air conditioner, a storage medium and a computer program product.The air conditioner outdoor heat exchanger comprises at least two defrosting areas capable of being dynamically divided, and each defrosting area is connected with a compressor exhaust pipeline through an independent bypass pipeline; the bypass pipeline is provided with a bypass electronic expansion valve used for adjusting flow and a bypass electromagnetic valve used for controlling on-off. The method comprises the steps that during heating, an outdoor heat exchanger surface heat image is collected, frost layer distribution and thickness are analyzed and recognized, and a frost layer distribution diagram is generated; according to the image, areas needing to be defrosted and areas not needing to be defrosted are determined from the defrosting areas; for the area needing to be defrosted, a bypass electromagnetic valve corresponding to a bypass pipeline is controlled to be opened, the opening degree of a bypass electronic expansion valve is adjusted, and the high-temperature refrigerant flows into the area to be defrosted; and for the area without defrosting, the bypass electromagnetic valve corresponding to the bypass pipeline is controlled to be closed, so that the refrigerant keeps the heating circulation flow direction to continuously supply heat to the indoor space. According to the scheme, the defrosting efficiency and stability are improved.

This invention provides a thermally insulating porous material with oriented channels and its preparation method. The material comprises a polyvinyl alcohol composite foam matrix with oriented through-channels, heat-storing microcapsules dispersed in the matrix and distributed along the channels, and a heat-reflective layer covering the outer surface of the matrix. Its preparation mainly includes: uniformly dispersing the heat-storing microcapsules in a slurry containing polyvinyl alcohol and nanofibers; forming a matrix with parallel columnar channels through directional freezing and freeze-drying; subsequently, performing glutaraldehyde vapor crosslinking and curing; and finally coating the matrix surface with a heat-reflective layer. This invention constructs an oriented channel structure that effectively extends the heat conduction path and utilizes still air for insulation. By encapsulating phase change materials, it achieves heat storage and temperature buffering. The surface heat-reflective layer reflects radiant heat, giving the porous material comprehensive properties of thermal insulation, temperature regulation, and heat radiation reflection.

The application provides a liquid cooling plate, a battery module and a case. The liquid cooling plate comprises a base body, the shape and size of the base body are matched with the shape and size of a battery monomer; a liquid cooling channel is arranged on the base body, the liquid cooling channel is coiled on the base body, one end of the liquid cooling channel is provided with an inlet, and the other end is provided with an outlet, and the inlet and the outlet are arranged at different positions of the edges of the base body respectively; wherein the cooling medium enters the cooling channel through the inlet, and flows out through the outlet after heat exchange with the battery monomer. The case comprises a battery monomer, a case body, and front and rear cover plates arranged on the two sides of the case body, and the front and rear cover plates can be detached and installed on the case body. The application effectively improves the liquid cooling heat exchange effect of the case, the battery module composed of the liquid cooling plate and the battery unit has the effect of reducing the solid wall surface temperature of the power module and improving the wall surface heat exchange area.

The invention discloses a high-power low-divergence-angle near-infrared semiconductor laser, belongs to the technical field of semiconductor lasers, and particularly relates to a high-power low-divergence-angle near-infrared band semiconductor laser. The problems that in the prior art, a low divergence angle and high light beam quality cannot be obtained at the same time under high-power output, and optical catastrophe damage (COD) and reliability reduction are caused by cavity surface heat accumulation are solved. The laser comprises a laser gain area, a conical waveguide area, a segmented waveguide area and a V-shaped groove structure optical fiber coupling area which are sequentially integrated in a monolithic mode in the laser propagation direction. The high-power low-divergence-angle near-infrared semiconductor laser is suitable for application scenes with high requirements on output power, light beam quality and system integration level, such as the fields of fiber laser pumping sources, laser processing, laser radars, space optical communication and the like.

The present invention relates to a heat exchanger (20), particularly for a heat exchanger for an aircraft nacelle, the heat exchanger comprising a first skin (21) and a second skin (22) joined together, and a plurality of channels (23) disposed between the first skin (21) and the second skin (22) for distributing hydraulic fluid (F1), wherein the heat exchanger further comprises a first hydraulic interface (24) and a second hydraulic interface (25) for the hydraulic fluid. The heat exchanger (20) further comprises at least one pressure drop reduction member (40) extending axially toward the first hydraulic interface (24) or the second hydraulic interface (25), wherein the pressure drop reduction member (40) has a generally conical cross-section.

This invention discloses a heat pipe type particle electric heater, comprising a heating chamber and several heat pipe units. The heating chamber has a heating cavity, a particle inlet, and a particle outlet. Each heat pipe unit includes an evaporation section, a condensation section, and a connecting assembly. Both the evaporation and condensation sections have working fluid cavities and are connected by the connecting assembly. The evaporation section is located outside the heating chamber, and the condensation section extends into the heating chamber. The working fluid cavity contains a phase change working fluid. The evaporation section is a conductive heating material section for heat exchange with the phase change working fluid, and the condensation section is a wear-resistant heat transfer material section for heat exchange with both the phase change working fluid and the particles. This invention replaces the structure of traditional electric heating tubes, eliminating the need for large amounts of expensive metal protective sleeves, fillers, and heating core wires required for surface heat load, significantly reducing wear damage to the structure from particles at ultra-high temperatures, while ensuring good heat exchange between the structure and the particles.