72results about How to "Even heat distribution" patented technology

The invention relates to the technical field of part typesetting, in particular to a nesting typesetting mixed common-edge analysis method and system based on laser cutting. The method comprises the following steps: obtaining initial typesetting part structure data, and carrying out part common-edge relation analysis to obtain part common-edge relation data; common-edge path optimization is carried out according to the initially-typeset part structure data, and optimized part cutting path data is obtained; performing laser cutting simulation based on the optimized part cutting path data to obtain laser cutting simulation data; performing typesetting heating balance optimization according to the laser cutting simulation data so as to obtain optimized part typesetting data; and performing cutting waste rate evaluation on the optimized part typesetting data to obtain typesetting cutting waste rate data, and performing minimum cutting waste rate optimization on the optimized part typesetting data based on the typesetting cutting waste rate data to obtain optimal part typesetting data. The cutting efficiency and precision are improved.

The invention discloses a stainless steel laser welding parameter optimization method based on a dynamic annular scanning path. The stainless steel laser welding parameter optimization method comprises the steps that S1, welding parameter setting is initialized to be suitable for controlling welding heat distribution; s2, measuring the material thickness of the welding area of the stainless steel workpiece before welding; s3, the scanning path layer number and the progressive speed are determined according to the welding parameters; s4, the welding control system adjusts welding parameters according to the temperature monitoring data; s5, the laser welding control system adjusts the layer number, the progressive speed and the scanning path radius of the dynamic annular scanning path in real time; s6, the scanning amplitude, the scanning frequency and the welding speed are optimized in real time; and S7, after welding is completed, quality detection is conducted on a welding seam, and detection data are compared with a preset welding quality standard. According to the method, accurate control over welding heat input, remarkable improvement of the welding seam quality and comprehensive optimization of the welding efficiency are achieved.

According to the system for machining the micro-hemispherical harmonic oscillator based on the carbon dioxide laser, the glass substrate is heated and softened through the carbon dioxide laser, and the energy utilization rate is higher. The horizontal displacement table drives the forming mold to move until the center coincides with the center of a laser spot, so that the positioning accuracy of a processing area is ensured; the diameter of the laser beam is adjusted through the beam expander, it is guaranteed that the diameter of a laser spot is larger than that of the to-be-machined micro-hemispherical harmonic oscillator, and the accuracy of a machining area is guaranteed. The forming mold and the glass substrate are driven to rotate through the rotating table, so that heat distribution of a processing area is relatively balanced, the size deviation of the micro-hemispherical harmonic oscillator caused by unbalanced heat distribution is avoided, and the processing quality of the micro-hemispherical harmonic oscillator is improved. Compared with a traditional method for softening the glass substrate through flame heating, all technological parameters in the machining process can be accurately controlled, the method has the advantages of being easy to operate and high in automation integration degree, and the micro-hemispherical harmonic oscillators high in forming precision and good in batch consistency can be machined.

The invention discloses a multi-channel symmetrical CLLC topological structure and a power balance control method thereof, and the structure comprises a multi-channel symmetrical CLLC converter main circuit loop, a high-precision sampling module, a phase shift angle controller module, an input capacitor, an output capacitor and an equivalent load. And more efficient electric energy conversion and power management control are realized. According to the power balance control method, phase shift control is carried out on a secondary side switching tube control signal of a power loop through a fundamental wave analysis method, a forward gain formula under the control method is derived, and output gain regulation and control are carried out on converters with power errors in the multi-path symmetrical CLLC converters. And thus, the power balance control among the multi-path symmetrical CLLC converters is realized.

The invention relates to the technical field of battery electronic device recovery, in particular to waste battery electronic device recovery processing equipment which comprises a processing chamber, a conveying mechanism is arranged on the upper portion in the processing chamber, a material inlet is formed in the upper portion of one side of the processing chamber, and a material output port is formed in the lower portion of the other side of the processing chamber. A frozen gas tank, a low-temperature cooling box and a crusher are sequentially arranged below the conveying mechanism in the treatment chamber from left to right, and a powder guide-out opening extending to the material output opening is formed in the lower portion of one side of the crusher; a lifting hoisting mechanism is installed on the conveying mechanism, a containing basket used for containing waste battery electronic devices is arranged on the hoisting mechanism, the outer wall of the containing basket is composed of a plurality of stop levers arranged at intervals, and an electric door is arranged at the bottom of the containing basket. The device has the advantages of being simple and compact in structure, capable of improving personal safety, more energy-saving and more environment-friendly.

The invention relates to the technical field of semiconductor laser manufacturing. The invention particularly relates to a semiconductor laser chip structure and a manufacturing method thereof. The semiconductor laser chip structure provided by the invention comprises a laser substrate and a heavily doped table, and the heavily doped table is arranged on the surface of one side, opposite to a substrate layer, of an upper limiting layer of the laser substrate and comprises a first ohmic contact layer, a second ohmic contact layer and a resistance control layer; the heavily doped table is provided with a current injection region, and is provided with a first current injection window and a second current injection window; a current path from the first current injection window to the substrate layer does not pass through the resistance control layer, and a current path from the second current injection window to the substrate layer passes through the resistance control layer; the second current injection window is at least arranged on one side of the current injection region close to the rear cavity surface. According to the semiconductor laser chip structure provided by the invention, carrier injection of the front cavity surface and the rear cavity surface can be effectively balanced, so that local failure of the front cavity surface is avoided, and the device efficiency can be improved.

The ecological restoration system comprises a snow melting assembly, the snow melting assembly comprises heating constant-temperature nets, a plurality of iron chains and fixing pieces, the heating constant-temperature nets are used for melting accumulated snow, at least two layers of heating constant-temperature nets are laid, and the iron chains are transversely arranged between every two adjacent layers of heating constant-temperature nets; a power supply device; the collecting assembly is used for collecting rainwater generated after the snow melting assembly melts the snow, and the collected rainwater is used for the side slope; the invention further provides a novel base material which comprises special foam particles, cotton old clothes fibers, bacillus subtilis, an adhesive and tailings, the problems of heat preservation and water retention in high and cold arid regions are solved, and vegetation growth is remarkably promoted. A set of sustainable ecological restoration system is constructed by innovatively combining the heating constant-temperature net, the rain, the collecting assembly, the power equipment and the novel ecological base material, and multiple challenges of ecological restoration and reinforcement of the high and steep slopes in the alpine and arid regions are successfully overcome.

The invention provides a control method and system of a converter, the converter and a wind generating set. The method comprises the steps that the current rotor speed of a doubly-fed wind generator is determined; in response to the fact that the difference between the rotor speed and the synchronous speed of the doubly-fed wind generator is smaller than a preset threshold value, for each three-level bridge arm, the state of a switching tube is controlled in the following mode that according to a modulation signal used for switching the output level of the three-level bridge arm from the positive level or the negative level to the midpoint level, the output level of the three-level bridge arm is converted into the midpoint level; and turning off the outer tube which is turned on in the current state, and turning on the clamping tubes and the inner tubes under the condition that the turned-on outer tube is turned off. The problem that the thermal stress of the power device near the synchronous speed cannot be properly solved is solved, and the thermal stress of the inner tube can be effectively dispersed by optimizing modulation logic, so that the thermal distribution of the power device of the switch tube is more uniform, and the problem that the thermal stress of the power device is too large is relieved.

The invention relates to a double-sided heat dissipation power module with a plane mosaic structure. The double-sided heat dissipation power module comprises a first substrate with a first conductive metal layer, a second substrate with a second conductive metal layer and a plurality of power chips, the first conductive metal layer comprises an AC conductive metal layer and a plurality of upper DC-conductive metal layers; the second conductive metal layer comprises a DC + conductive metal layer and a plurality of lower DC-conductive metal layers; the plurality of power chips comprise a plurality of upper tube power chips and a plurality of lower tube power chips; the plurality of lower tube power chips are arranged on the AC conductive metal layer, are staggered with the plurality of upper tube power chips, and are connected with the plurality of lower DC-conductive metal layers in a one-to-one correspondence manner; an independent power loop exists between each upper tube power chip and the adjacent lower tube power chip, and mutual inductance of the two opposite power loops is offset in the vertical direction and the horizontal direction. According to the power module, the mutual inductance offset effect is improved by increasing the number of current paths.

The utility model belongs to the technical field of motors, and particularly relates to a stator end winding heat dissipation structure of an outer rotor roller motor, which comprises a stator iron core, a winding wound on the stator iron core, a heat pipe used for transferring heat at the end of the winding to the stator iron core, and a cooling pipeline positioned on the inner side of the stator iron core, the heat pipe is in direct contact with the stator core and the winding end part and comprises an evaporation section and a condensation section; according to the utility model, the heat of the winding end part is efficiently transferred to the stator core by using the heat pipe, and the stator core is cooled by the cooling medium of the cooling pipeline, so that the heat dissipation efficiency of the winding end part is improved, and the overall heat of the motor is uniformly distributed.

The utility model relates to the technical field of heating equipment, and provides a heating device. The heating device comprises a box body, an air blowing component and a heat exchange assembly. Wherein a cavity is formed in the box body, an air outlet is formed in one end of the box body, an air inlet is formed in the other end of the box body, and the air outlet and the air inlet are both communicated with the cavity; the air blowing component is arranged in the cavity and used for forming air flow in the cavity, and the air flow flows from the air inlet to the air outlet; the heat exchange assembly is arranged in the box body and used for conveying heat in the warm air into the cavity. A first cover body is arranged at the air outlet and is used for blocking the air outlet; the air inlet is provided with a second cover body which is used for blocking the air inlet. According to the utility model, the defect that the heating equipment for directionally controlling the warm air in the prior art cannot utilize heat in the warm air is overcome, and the heating equipment which can utilize the heat in the warm air and can directionally and centrally control the flow direction of the warm air is realized.

This invention provides an active heating method and system for a two-dimensional turntable servo mechanism, belonging to the field of laser communication technology. The method includes acquiring the feedback temperature and motor torque of the azimuth or pitch axis; when the motor torque is zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a first heating power based on the first d-axis current and the electrical control angle; when the motor torque is not zero and the difference between the feedback temperature and the preset temperature is outside the preset temperature range, heating is performed by determining a second heating power based on the second d-axis current and the q-axis current, until the temperature difference returns to the preset range and heating stops. This invention utilizes the heat generated by the motor's own current to replace external heating devices, achieving uniform heating from within, effectively reducing deformation and frictional torque fluctuations in key moving parts caused by temperature gradients, and improving the turning table's pointing accuracy and thermal stability under extreme temperature changes.

The utility model provides a follicle flushing liquid constant-temperature device which comprises a constant-temperature box, a box body cover plate is rotationally connected to the constant-temperature box, a fixing opening is fixedly connected to the box body cover plate, the fixing opening is connected with a flushing assembly, an extrusion assembly is arranged in the constant-temperature box, and the extrusion assembly is connected with a constant-temperature assembly. The extrusion assembly achieves the stable and continuous flushing effect and controls the flushing force, the constant-temperature assembly achieves uniform dispersion of heat, so that flushing liquid can be continuously heated, the temperature sensor achieves temperature regulation and control, the constant-temperature state of the flushing liquid is achieved, and the flushing assembly guarantees sterility of medical supplies in contact with the flushing liquid. And control over the flushing flow can be achieved through the arranged flow adjusting valve.

The utility model belongs to the technical field of automobiles, and discloses a battery pack and a vehicle, the battery pack comprises a battery module, a liquid cooling plate and a heating film, the two end faces of the heating film are connected to the battery module and the liquid cooling plate respectively, and the heating film comprises a first heating film and a second heating film which are arranged at an interval; the second heating film is located on the inner side of the first heating film, and the heating area of the first heating film is larger than the heating area of the second heating film, so that the connection stability of the liquid cooling plate and the battery module is guaranteed, the cooling effect on the battery module is guaranteed, and in addition, when the battery module is cooled or heated, the battery module is cooled or heated. And the heat distribution of the battery module is more uniform, so that the performance of the battery pack is ensured.

The present invention relates to a method for preparing a carbon fiber ceramic body and a porous ceramic heating element. The method for preparing a carbon fiber ceramic body comprises the following steps: adding ceramic powder, adhesive, and surfactant to silica sol to form a slurry and ball milling to form three slurries, respectively adding 5%, 10%, and 15% of chopped fibers and pore formers and water to the three slurries, and ball milling to form a first mixture, a second mixture, and a third mixture. The ceramic powder of the present invention can form a structural skeleton, the adhesive can bond the ceramic powder, and the pore former can form pores; the surfactant can enhance the dispersion of pores in the ceramic powder and the adhesive; the chopped fibers can enhance the strength of the carbon fiber ceramic body; the chopped fibers will produce carbon after being heated and decomposed, which can increase the thermal conductivity of the carbon fiber ceramic body; and the content of the chopped fibers in the first mixture, the second mixture, and the third mixture gradually increases, which can make the heat distribution of the carbon fiber ceramic body uniform.

The application relates to the technical field of flue gas heat recovery equipment, in particular to a heating furnace cooling device which comprises a cavity, a motor, a liquid receiving hopper, a mixing cavity, a movable cavity and a heat insulation cavity, the upper and lower ends of the cavity are respectively provided with a spraying pipe and a flue, a liquid discharge pipe is arranged at the bottom of the cavity, the motor is fixedly arranged at the top end of the cavity, a first fan blade is arranged on the rotating shaft of the motor, a second fan blade and a stirring blade are arranged in the liquid receiving hopper, the mixing cavity is arranged at the top of the cavity, the movable cavity is cooperated with the mixing cavity and a connecting pipe at two ends, and the heat insulation cavity surrounds the side of the cavity. The device directly contacts the flue gas with the water mist-shaped heat conducting medium without a medium layer in the middle, the contact area is large, the heat exchange rate is fast, the cooling and heat recovery of the flue gas can be rapidly completed, the position of the movable cavity and the rotating speed of the stirring blade can be self-adaptively adjusted according to the flue gas inflow, and the flue gas and the adaptive amount of the heat conducting medium can be fully mixed to complete the heat exchange and cooling process.

The invention provides a diffusion welding method of a cobalt target material, which comprises the following steps of: (1) carrying out coating treatment on a welding surface of a cobalt target blank, and then carrying out second ultrasonic cleaning to obtain a coated cobalt target blank; (2) a welding groove matched with the cobalt target blank is formed in the welding face of the back plate through first turning, then second turning is conducted on the surface of the welding groove, third ultrasonic cleaning is conducted, and the machined back plate is obtained; (3) the cobalt target blank coated with the film in the step (1) and the back plate machined in the step (2) are assembled and then placed in a sheath, and hot isostatic pressing welding is conducted after the sheath is degassed; the step (1) and the step (2) are not divided into a sequence. According to the method, the welding groove is formed in the back plate through first turning, then second turning is conducted, the good contact area between the cobalt target blank and the back plate is ensured, meanwhile, the cleanliness of the welding face of the back plate is effectively controlled, and therefore the welding strength of the cobalt target blank and the back plate can be improved.

The invention relates to the field of tire manufacturing, and discloses a winter tire with a discontinuous winding cap ply, the tire comprises a tread, a winding cap ply, a belted layer, a tire body, a sidewall and a tire bead, the belted layer is attached to the tire body, the winding cap ply is arranged on the belted layer, the cap tension of the winding cap ply adopts a segmented control design, and the width of the winding cap ply is smaller than that of the tread. The winding cap ply is formed by spirally winding a single nylon strip from a first shoulder part of the tire to a second shoulder part of the tire, the winding cap ply of the tire crown part is spirally wound at intervals, and the interval between every two circles of wound cap plies is 1-3mm. By means of the design of the winding cap ply, segmented control over the tension of the cap ply is achieved, the problem of uneven abrasion of the winter tire under high-speed running or complex road conditions is solved, the durability, the ground gripping performance, the control performance, the bearing capacity, the safety and the comfort of the winter tire are improved, and the service life of the winter tire is prolonged; the weight of the tire in winter is reduced, and the cost for winding the cap ply is reduced.

The utility model belongs to 3D printing technical field discloses a kind of high-temperature 3D printers of printable PEEK material, including mobile spray head assembly, box body assembly, lift printing platform, control system, frame, the mobile spray head assembly is installed at the top of box body assembly, the mobile spray head assembly includes printing spray head, wire-feeding mechanism and X axis, Y axis horizontal direction moving part, the outside of printing spray head is provided with water-cooling heat dissipation pipe cover, the wire-feeding mechanism is installed above printing spray head, and the printing spray head is installed on the printing spray head support of X axis, Y axis horizontal direction moving part.The utility model designs the heat preservation cavity of airtight, heating element and air supply element are configured in heat preservation cavity, can manufacture circulating heat flow in cavity, ensure that the heat distribution of printing piece near in cavity is uniform, temperature is reasonable controllable, alleviate temperature gradient phenomenon when printing piece cooling, so that printing piece obtains better forming precision and mechanical property.

This invention provides a sealing mechanism for a sealing machine. It solves the problems of existing sealing machines that require heating the base with heating plates before pressing it against the sides of the product to seal, resulting in low heating efficiency, slow response, and long waiting times for both heating and cooling. This invention uses two ceramic heating plates pressed against the inner wall of the belt to heat and seal the product in the clamping position. This results in a faster heating response, quicker temperature rise, and more uniform heat distribution. Furthermore, the aluminum base does not participate in the heat conduction process; the sealing is achieved directly through the ceramic heating plates, effectively improving sealing efficiency. Compared to traditional copper bases, it also significantly reduces the overall weight of the equipment.

A steam cracking method utilizing electricity for providing energy. According to the method, electricity is used to provide energy for a steam cracking reaction of a cracking raw material by means of electromagnetic induction. The cracking raw material comprises one or more combinations of naphtha, cycloalkane, and cycloolefin. The cycloalkane is a C4-C8 cycloalkane, and the cycloolefin is a C4-C8 cycloolefin. Electricity is used to provide energy for a steam cracking reaction by means of an electromagnetic coil, so that a new application can be provided for electricity, and the current problem of excessive electric power is solved. Moreover, the electromagnetic coil is used to provide energy, so that the distribution of heat in a furnace tube of a cracking furnace can be more uniform, and the reaction temperature and the reaction can be controlled more conveniently.

The utility model relates to the field of kneecap massagers, and discloses a heating mechanism of a kneecap massager, which comprises kneecap cloth, a rubber strip is fixedly connected to the periphery of the kneecap cloth, bandages are fixedly connected to the front side and the rear side of the rubber strip, a heating seat is fixedly connected to the top end of the kneecap cloth, and a protective cover is slidably connected to the top of the heating seat. A fixed sleeve is fixedly connected to the top of the protective cover, a rotating column is elastically connected to the interior of the fixed sleeve through a volute spiral spring, a rotating handle is fixedly connected to the top of the rotating column, and an oval clamping block is fixedly connected to the bottom of the rotating column. According to the utility model, the volute spiral spring and the fixed sleeve are arranged, the rotating handle is rotated to enable the elliptical clamping block to be separated from the baffle clamping groove, the protective cover is taken down, and then the screw is dismounted to replace the heating wire, so that the heating wire can be conveniently replaced after being used for a long time; therefore, the kneecap massage instrument cannot be used due to damage of the heating mechanism.

The invention provides a control method and system of a temperature adjusting system, a storage medium and a vehicle, and belongs to the technical field of vehicles, and the control method of the temperature adjusting system comprises the steps that the current working state of a first heat exchange pipeline and the current working state of a second heat exchange pipeline are obtained; determining respective expected working states of the first heat exchange pipeline and the second heat exchange pipeline based on the current temperature difference between the areas of the target component and respective current working states of the first heat exchange pipeline and the second heat exchange pipeline; and the first heat exchange pipeline and the second heat exchange pipeline are controlled to be in respective expected working states. According to the control method, the working states of the first heat exchange pipeline and the second heat exchange pipeline are adjusted according to the current temperature difference of the target component, so that heat distribution between different areas of the target component is improved, the situation that the target component is locally too cold or too hot is avoided, and the component subjected to temperature adjustment is prevented from being damaged.

The invention discloses a drying device for polaroid production, and belongs to the technical field of polaroid drying treatment.The drying device for polaroid production comprises a drying box body, an opening is formed in the back of the drying box body in a penetrating mode, and a plurality of mounting plates are fixedly connected to the interior of the drying box body; and a heating pipe is installed between every two installation plates, heating box bodies are installed on the two sides of the installation plates, the heating box bodies are communicated with the drying box body, and a rapid drying mechanism is arranged in the drying box body. By adopting the rapid drying mechanism, through cooperation of revolution and rotation, heat borne by the polaroid comes from multiple directions, the deformation risk caused by heating in a single direction is avoided, meanwhile, the mechanical stress borne by the polaroid in the heating process can be reduced through a dynamic winding mode, the deformation possibility of the polaroid is reduced, and in addition, the product quality is improved. The drying speed can be effectively increased through circulation of hot air, moisture on the surface of the polaroid can be rapidly removed, and the drying time is shortened.

This utility model belongs to the field of microwave oven technology, specifically referring to a microwave oven door and microwave oven, comprising: an outer door glass; an inner cover fixed to the inner side of the outer door glass; the inner cover having a shielding mesh portion and a wave-damping portion located on the outer edge of the shielding mesh portion; an inner door glass fixed to the shielding mesh portion of the inner cover; and at least one central glass fixed in the inner cover; wherein the inner cover is made of metal. The inner cover involved in this patent is made of metal, ensuring that it is a single, integral structure; during microwave oven operation, the metal inner cover has better temperature resistance and more uniform heat distribution, effectively avoiding the risk of the door material melting due to overheating. Furthermore, this patent further enhances the heat insulation effect by installing an inner door glass on the inner cover, ensuring that the door temperature remains within a safe range, thereby reducing the risk of burns.

A glazing (10) for a plurality of sensors, comprising a glass sheet (1), an electrically conductive coating (2) on a portion of a surface of the glass sheet (1), first and second busbars (3a, 3b) for providing an electrical voltage to the electrically conductive coating (2), a permeable region (4) arranged between the first busbar (3a) and the portion of the electrically conductive coating (2), a plurality of auxiliary busbars (5a, 5b, 5c) at an edge of the permeable region (4) and in electrical contact with the electrically conductive coating (2), at least one supply line (6a, 6b, 6c) connecting the at least one auxiliary bus bar (5a, 5b, 5c) to the first bus bar (3a) arranged in the transparent region (4), a lower auxiliary bus bar (5a) of the plurality of auxiliary bus bars (5a, 5b, 5c) being arranged at a lower edge of the transparent region (4), in which the transparent region (4) has an asymmetric shape including an imaginary symmetric region and a protrusion (4a) protruding from a portion of a side edge of the imaginary symmetric region, and at least one side auxiliary bus bar (5b, 5c) of the plurality of auxiliary bus bars (5a, 5b, 5c) is disposed at a portion of a side edge of the imaginary symmetric region lower than the protrusion (4a).

The invention relates to the technical field of food processing equipment, in particular to a full-automatic steamed bun forming and steaming all-in-one machine which can drive a plurality of bearing rods arranged on the side wall of a rotating disc to move synchronously through rotating motion of the rotating disc. In the moving process of the bearing rods, gears outside the bearing rods can be matched with a gear ring inside the steam box, so that accurate meshing and rotation are achieved, along with continuous rotation of the rotating disc, the rotating frame is pushed to move along a specific track, and the rotating frame can also rotate automatically, so that the steam box can rotate automatically. The dual movement mechanism ensures that steamed buns in the rotating frame can obtain uniform heat distribution, so that an efficient steaming process is realized, the steamed buns can be uniformly heated in the steaming process, each steamed bun can obtain the same cooking effect, and the quality and taste of food are ensured.

The invention provides a rotating and knocking dual-channel afterburner of a turbofan engine. The rotating and knocking dual-channel afterburner comprises a tail cone section, a supporting rod, an oil supply ring, an outer cylinder, an inner cylinder, an outer oil injection ring and an inner oil injection ring, wherein the outer cylinder, the inner cylinder, the outer oil injection ring and the inner oil injection ring are coaxially arranged; the tail cone section is arranged at an inlet of the combustion chamber, the diameter is gradually reduced from the inlet of the combustion chamber in the axial direction, and the tail cone section is located in the circle center of the combustion chamber; the supporting rods are radially arranged at the inlet of the combustion chamber, one end of each supporting rod is connected with the tail cone section, and the other end of each supporting rod is connected with the oil supply ring; the inner oil injection ring and the outer oil injection ring are sequentially arranged in the radial direction of the supporting rod and connected with the supporting rod. The inner cylinder is arranged on the outer side of the inner oil injection ring in the radial direction, and one end of the inner cylinder in the axial direction is connected with the supporting rod. The outer cylinder is arranged on the outer side of the outer oil injection ring in the radial direction, and one end of the outer cylinder in the axial direction is connected with the oil supply ring. An outer combustion chamber is formed in the space between the outer cylinder body and the inner cylinder body, and an inner combustion chamber is formed in the inner combustion chamber.

The invention relates to the technical field of semiconductor lasers, in particular to an area array VCSEL (Vertical Cavity Surface Emitting Laser) with high heat dissipation efficiency, which comprises a periodically arranged light-emitting unit array, and deep etching grooves exist between adjacent light-emitting units. Each light-emitting unit is provided with a substrate, a DBR (Distributed Bragg Reflector) structure, an active layer, a current limiting layer, an electrode and an insulating layer arranged on the side surface and a communication region of each light-emitting unit, graphene is plated on all regions of the insulating layer, or graphene is only plated on a heat distribution region according to a thermal simulation result to form a patterned graphene heat dissipation layer. The local heat dissipation problem of the area array VCSEL can be effectively optimized, the temperature difference between different light-emitting units is balanced, and the situation that the performance of a device is reduced due to the fact that local heating of a chip is serious is avoided.

The utility model relates to a coil and stove with the function of generating magnetic field and heat, the coil comprises a wire core with the function of generating magnetic field and heat, the wire core is a strip-shaped wire core, a line-shaped wire core, a spring-shaped wire core or a wave-shaped wire core, and the surface of the wire core is coated with nanometer high-temperature insulating paint. By combining the principles of electromagnetic induction and resistance heating, the coil can more efficiently convert electric energy into heat energy. For the induction cooker part, iron or magnetic cookware can be rapidly heated by using electromagnetic induction; and for scenes needing average heating, such as an electric ceramic furnace part, resistance heating can provide more uniform heat distribution.