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1957 results about "Induction coil" patented technology

An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Rühmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply. To create the flux changes necessary to induce voltage in the secondary coil, the direct current in the primary coil is repeatedly interrupted by a vibrating mechanical contact called an interrupter. Invented in 1836 by Nicholas Callan, with additional research by Charles Grafton Page and others, the induction coil was the first type of transformer. It was widely used in x-ray machines, spark-gap radio transmitters, arc lighting and quack medical electrotherapy devices from the 1880s to the 1920s. Today its only common use is as the ignition coils in internal combustion engines and in physics education to demonstrate induction.

Method for dynamically monitoring and automatically processing abnormity of entrance and exit of parking lot

The invention discloses a method for dynamically monitoring and automatically processing abnormity of an entrance and an exit of a parking lot, relates to the technical field of intelligent parking lot management, and aims to solve the problems that existing unattended parking lot entrance and exit management depends on manpower, abnormity processing is passive, and the misjudgment rate is high. The method is based on an information acquisition and execution layer-edge processing layer-cloud platform three-layer architecture, the core realizes high-precision scene understanding through a multi-algorithm fused visual perception module, multi-modal data weighted fusion is combined with a ground induction coil, a radar and the like, and the misjudgment rate is reduced; a sensing result is converted into an automatic processing action through a configurable intelligent rule engine; and meanwhile, the cloud platform stores passing data and an evidence chain, optimizes an AI model through incremental training and returns the AI model to an edge layer, so that closed-loop evolution is realized.
Owner:ZHEJIANG BAOXIN TECH CO LTD

Semi-aviation transient electromagnetic acquisition device and method for calibrating data drift in real time

The invention provides a semi-aviation transient electromagnetic acquisition device and method for calibrating data drift in real time, and relates to the technical field of data calibration, and the device comprises an electromagnetic data acquisition unit which receives a secondary induction signal generated by a ground transmitting end through a transient electromagnetic hollow induction coil disposed in a coil storage cabin of an unmanned aerial vehicle, and transmits the secondary induction signal to an unmanned aerial vehicle; self-adaptive gain control is carried out according to the signal intensity to obtain real-time electromagnetic data; the flight control unit monitors the swing amplitude and frequency of the coil in real time according to the inclination angle and acceleration data fed back by the sensor in the coil storage cabin, and carries out flight attitude adjustment and control; the drift calibration unit adopts a static reference mode for calibration at the beginning stage of flight; and switching to a dynamic reference mode in the flight process, and carrying out self-adaptive calibration on the real-time data stream based on a sliding window. According to the invention, drift calibration of traditional software post-processing is migrated to a hardware acquisition stage, so that synchronous completion of data acquisition and drift compensation is realized.
Owner:SHANDONG UNIV

Curved surface self-adaptive eddy current detection probe, nondestructive flaw detector and detection method thereof

The invention relates to the field of electromagnetic nondestructive testing, in particular to a curved surface self-adaptive eddy current testing probe, a nondestructive flaw detector and a testing method. The eddy current detection probe comprises a magnetic core bundle, an excitation coil and an induction coil. Wherein the magnetic core bundle is formed by densely arranging a plurality of ferromagnetic magnetic needles; and the excitation coil and the induction coil radially limit the magnetic core bundle. The excitation coil is wound on one end of the magnetic core bundle away from the detection surface and is used for connecting an adjustable power supply. The exciting coil generates an alternating magnetic field for detection in a target area by using the adjustable power supply, and magnetizes the magnetic core bundle by using the adjustable power supply, so that the detection surface of the eddy current detection probe is tightly adsorbed with the target area on the surface of a detected object. And the induction coil is wound at one end, close to the detection surface, in the magnetic core bundle and is used for inducing a signal generated by a detected object in the detection process. According to the invention, the problem that the existing electromagnetic nondestructive testing probe cannot be attached to various complex curved surfaces to cause signal attenuation and influence the measurement precision is solved.
Owner:HEFEI GENERAL MACHINERY RES INST +3

Reaction chamber and plasma processing equipment

The invention relates to the technical field of wafer processing, in particular to a reaction chamber and plasma processing equipment, which comprises a quartz tube, an induction coil, a Faraday shield cage, a state monitoring device, a rotation driving device and a control unit, and is characterized in that the quartz tube is arranged at the top of a processing chamber; the induction coil is arranged around the outer side of the quartz tube; the Faraday shielding cage is provided with a slit, and the orthographic projection of the slit on the circumferential wall of the quartz tube forms an erosion area; the state monitoring device is used for monitoring the erosion area; the driving end of the rotary driving device is connected with the quartz tube or the Faraday shielding cage; the control unit is in communication connection with the state monitoring device and the rotary driving device; according to the invention, through real-time monitoring and an active regulation and control mechanism, the problem of concentrated erosion of plasma to the quartz tube in a high-hydrogen process is effectively solved.
Owner:SHANGHAI BANGXIN SEMI TECHNOLOGY CO LTD

Efficient anti-freezing and anti-blocking integrated induction heating system and method for oil and gas pipeline

The invention discloses an efficient anti-freezing and anti-blocking integrated induction heating system and method for an oil and gas pipeline, belongs to the technical field of anti-freezing and anti-blocking of oil and gas pipelines, and aims at solving the problems that in the prior art, heating efficiency is low, energy consumption is huge, heating uniformity and adaptability are poor, the system integration degree is low, and the intelligent degree is insufficient. Comprising the steps of S1, induction heating unit arrangement and power management; s2, real-time temperature monitoring and data acquisition; s3, intelligent data analysis and precise heat management; the electromagnetic induction heating principle is adopted, the induction coil directly heats the pipeline and the internal medium, heat conduction loss and heat energy radiation loss of heating modes such as traditional resistance wires and heat tracing bands are reduced, the intelligent power management module can optimize power supply and power adjustment, and the self-adaptive environment and load adjustment strategy is combined, so that the self-adaptive load adjustment is achieved. The heating power can be automatically adjusted according to the environment temperature and the pipeline load, the anti-freezing and anti-blocking effect is guaranteed, meanwhile, energy consumption is remarkably reduced, and the burden of an electric power supply system is relieved.
Owner:SHENZHEN ZHONGKE BLUE OCEAN TECH IND CO LTD

Reaction cavity and plasma processing equipment

The invention relates to the technical field of wafer processing equipment, in particular to a reaction cavity and plasma processing equipment, comprising a quartz tube, an induction coil and a shielding member, the quartz tube is arranged at the top of a processing chamber; the induction coil is arranged on the outer side of the quartz tube in a surrounding manner and comprises a plurality of annular sections which are arranged at intervals in the axial direction of the quartz tube and a plurality of connecting sections which are arranged between every two adjacent annular sections and are used for connecting every two adjacent annular sections; the shielding component is annularly arranged between the quartz tube and the induction coil and comprises a plurality of annular shielding parts arranged in the axial direction of the quartz tube and a plurality of arc-shaped shielding parts arranged between every two adjacent annular shielding parts and used for connecting every two adjacent annular shielding parts; a slit is formed between two adjacent annular shielding parts; concentrated bombardment of high-energy ions on the inner wall of the quartz tube can be obviously prevented, so that erosion of the quartz tube is effectively reduced, particulate matter is reduced, the service life of a machine is prolonged, and the process yield is increased.
Owner:SHANGHAI BANGXIN SEMI TECHNOLOGY CO LTD

Infrared pulse thermal radiation grinding burn nondestructive testing method and system

The invention provides an infrared pulse thermal radiation grinding burn nondestructive testing method and system, and belongs to the technical field of nondestructive testing. Comprising the following steps: inputting an excitation signal to an induction coil, and inducing a pulsed eddy current in a tested part for heating; a thermal infrared imager and a depth camera are used for obtaining a thermal response temperature matrix of a measured area of the part and a three-dimensional point cloud of the measured area; then, constructing a thermal response model of the part; extracting a time sequence temperature curve of the heating stage and the natural cooling stage of the detected area, and establishing a grinding burn discrimination function to judge whether a grinding burn area exists or not; and the thermal infrared imager and the depth camera are calibrated, the grinding burn area under the coordinate system of the thermal infrared imager is projected into the three-dimensional point cloud of the depth camera, the position of the grinding burn area under the world coordinate system is obtained, and detection and positioning of the grinding burn area are achieved.
Owner:WUHAN UNIV OF TECH

Vacuum induction heating process closed-loop control system applying industrial mechanism model

The invention relates to the technical field of industrial process control, and discloses a vacuum induction heating process closed-loop control system applying an industrial mechanism model, which comprises the following steps: acquiring the input active power of an induction coil through a power monitoring unit, and measuring the total external radiation heat flux of the outer wall of a vacuum chamber by a heat flow sensing unit; the embedded decision-making module calculates the thermal-electric response ratio and the time derivative thereof in real time, judges the phase change critical state of the material based on the derivative change and generates a regulation and control instruction, through dynamic capture of the thermal-electric energy balance relation, recognition of the phase change critical point of the material is achieved, and by combining working condition pre-judgment of the vibration spectrum entropy and current ripple characteristic arbitration, the phase change critical state of the material is judged. An anti-interference multi-verification mechanism is constructed, and the robustness of the control system under the preset working condition is improved.
Owner:BOHAI UNIV

Micro welding seam tracking method and system based on electromagnetic induction

The invention relates to the technical field of automatic welding, and discloses a micro welding seam tracking method and system based on electromagnetic induction. According to the method, a high-frequency alternating magnetic field is applied to a welding seam area through an exciting coil in the micro electromagnetic sensing core; an induction coil in the electromagnetic sensing core is used for detecting magnetic field disturbance caused by geometric shape changes of the weld groove, and induction signals are obtained; processing the induction signal through a signal processing circuit integrated in the probe, namely converting the impedance change of the coil into a voltage signal, demodulating and filtering the voltage signal, and extracting a direct-current voltage signal corresponding to the deviation of the probe relative to the central position of the welding seam; the direct-current voltage signals serve as position feedback information to be output to a welding robot control system; and the movement track of the welding robot is adjusted in real time according to the position feedback information, and welding seam tracking and path deviation correction are achieved.
Owner:珠海城市职业技术学院

Reservoir underground pore connectivity transformation simulation equipment, system and evaluation method

The invention discloses reservoir underground pore connectivity transformation simulation equipment, a reservoir underground pore connectivity transformation simulation system and an evaluation method. The equipment comprises a rock core transformation clamping device, a first magnet, a second magnet, a nuclear magnetic resonance signal controller, a storage and collection tank and a fluid displacement device, wherein a magnetic induction coil is arranged in the rock core transformation clamping device, and the first magnet and the second magnet are oppositely arranged on the two sides of the rock core transformation clamping device; the nuclear magnetic resonance signal controller is electrically connected with the first magnet, the second magnet and the magnetic induction coil respectively and is used for controlling the magnetic field intensity formed by the first magnet, the second magnet and the magnetic induction coil and measuring a nuclear magnetic signal of a rock core sample in the rock core transformation clamping device; the rock core modification clamping device comprises a fluid inlet, the fluid inlet is communicated with the storage and collection tank, and the fluid displacement device is connected with the storage and collection tank, so that fluid is displaced into the rock core modification clamping device under the action of the fluid displacement device, and modification and evaluation on the pore connectivity of the rock core sample under different fluid pressures are realized.
Owner:PETROCHINA CO LTD

Steel motor shaft manufacturing heat treatment equipment

The invention relates to the field of motor shaft manufacturing equipment, in particular to steel motor shaft manufacturing heat treatment equipment which comprises a track plate and a fixing plate, an induction coil used for heating a motor shaft is fixedly installed on the rear side of the fixing plate, and a clamping mechanism used for conducting segmented clamping on the motor shaft is arranged on the track plate. According to the invention, a double limiting mechanism of segmented clamping of the clamping mechanism and follow-up limiting of the limiting mechanism is adopted, when the induction coil moves to a heating area at the end part of the motor shaft, the jacking column and the clamping block at the corresponding side actively get away from the motor shaft, and the motor shaft is clamped by the jacking column and the clamping block; the problem of repeated thermal deformation caused by the fact that the jacking column is exposed to a strong induced magnetic field is thoroughly avoided, meanwhile, the abutting rod keeps fixed relative to the induction coil in position, in the rotating process of a motor shaft, real-time calibration of the coaxiality of the heating section is achieved, and the coaxiality degradation risk of traditional opposite jacking clamping is effectively eliminated.
Owner:JIANGSU YISHENG PRECISION MASCH MFG CO LTD

Wireless method and system for bidirectional transfer of power between a DC power source and an electric motor-generator rotor

The present invention involves method and system for contactless bidirectional transfer of power between DC source (3700) and rotor coils of electric motor-generator by simultaneous bimodal capacitive and inductive power transfer of high frequency power signals from resonators (3545) stationary with respect to the motor-generator stator to resonators (3585) on the motor-generator rotor according to an adjustable transfer mode ratio at a variable resonant power signal oscillation frequency. Power from DC source is converted into high frequency power signals by high frequency continuous auto-adjusting bimodal stator transmitter-receiver modules under control of systems controller (3572) and provided to corresponding one or more high frequency stator resonators. High frequency power signals received by high frequency rotor resonators are converted in corresponding high frequency auto-adjusting bimodal rotor transmitter-receiver modules to electrical signals to provide to drive circuitry of induction coils on rotor.
Owner:DAANAA RESOLUTION INC

Full-automatic pouring method for anode carbon block

The invention relates to the technical field of metal casting, in particular to a full-automatic pouring method of an anode carbon block, which comprises the steps of molten iron melting treatment, molten iron transfer, molten iron weighing and heat preservation, troubleshooting before pouring and pouring, in the process of molten iron weighing and heat preservation, a weighing system monitors the weight of molten iron in a capacity bin, and in the process of molten iron weighing and heat preservation, the weight of the molten iron in the capacity bin is monitored; the medium-frequency induction coil is used for heating and heat preservation of molten iron in the capacity bin, the heat preservation power is adjusted according to the molten iron temperature fed back by the temperature monitoring system, in the pouring process, the visual system is used for confirming the positions of the chute mechanism and the anode carbon block, and an air pressure sensor and a liquid level position sensor are integrated; according to the full-automatic pouring method for the anode carbon block, the liquid level of molten iron in the liquid outlet groove is kept within the set height range all the time, finally, whether the pouring liquid level reaches the set required value or not is detected through a visual system, and the full-automatic pouring method for the anode carbon block is high in automation degree, good in stability and capable of effectively improving the connection quality of the anode carbon block and the anode claw and the production efficiency.
Owner:广东熔科工业设备有限公司

Multi-path vibration energy collection device

The invention provides a multi-path vibration energy collection device, and the device comprises a mass block which can generate relative movement under the excitation effect; the piezoelectric cantilever beams are arranged on the two transverse sides of the mass block and used for responding to high-frequency micro-amplitude vibration energy; the permanent magnet assembly is fixed in the moving direction of the mass block and is matched with the induction coil to realize magnetoelectric energy conversion; the piezoelectric cantilever beam is connected with the bridge rectifier and the thyristor threshold trigger circuit 1, and the permanent magnet assembly is connected with the bridge rectifier and the thyristor threshold trigger circuit 2 to form a double-independent energy collection channel. The method has the following advantages: (1) a path orthogonal decoupling design is adopted, so that a structure and energy dual-independent acquisition path is realized; (2) the energy conversion efficiency is improved based on a coupling response mechanism of mass block inertia driving; and (3) a thyristor threshold triggering mechanism realizes micro-energy efficient conversion, and the output is stable and reliable.
Owner:TONGJI UNIV

Continuous passing type quenching conveying device for camshaft of diesel engine

The invention discloses a continuous passing type quenching conveying device for diesel engine camshafts in the technical field of diesel engine camshaft machining. The quenching conveying device comprises a first conveying mechanism, a plurality of camshaft fixing mechanisms and a plurality of quenching mechanisms, wherein the camshaft fixing mechanisms and the quenching mechanisms are arranged on the first conveying mechanism. Wherein the quenching mechanism comprises a bearing frame connected with the first conveying mechanism, a driving device arranged on the bearing frame and a split type induction coil connected with the driving device, and the split type induction coil comprises two sets of symmetrically-arranged arc-shaped coils and a driving part used for driving the two arc-shaped coils to move face to face or back to back. According to the quenching mechanism, the split type induction coil is driven by the driving equipment to move in the axial direction of the diesel engine camshaft main body for quenching work, the diesel engine camshaft main body does not need to be repeatedly clamped, transferred and reset, the quenching treatment work efficiency of the diesel engine camshaft main body is greatly improved, and the production efficiency is improved.
Owner:ANQING CSSC DIESEL ENGINE

Induction heating path optimization method suitable for heterogeneous silencing structure

The invention discloses an induction heating path optimization method suitable for a heterogeneous noise elimination structure, and particularly relates to the field of induction heating path optimization of the heterogeneous noise elimination structure, and the method comprises the steps: building a grid coordinate in a target region, collecting the heat conductivity coefficient, the specific heat capacity, the thermal resistance value and the induction coil gap value of each grid node in the grid coordinate, generating a thermal response model; and performing heat conduction calculation on the thermal response model and a preset heating power curve, calculating a temperature rise value of each grid node in a fixed preset heating time, marking the grid nodes of which the temperature rise values reach or exceed a safe temperature threshold and the adjacent grid nodes as heat concentration areas, and generating risk area data after gathering the heat concentration areas. A risk assessment and dynamic reordering mechanism based on local thermal characteristic difference is introduced in a heating path planning process, so that advanced identification and real-time avoidance of a heat concentration area are realized.
Owner:WUXI YOUCI ENVIRONMENTAL PROTECTION TECH CO LTD

Intelligent precision seed-metering device based on electromagnetic control and seed-metering method

The invention belongs to the technical field of seeding, and particularly relates to an intelligent precision seed-metering device based on electromagnetic control and a seed-metering method, and the seed-metering device comprises a seed-metering disc assembly and an electromagnetic intelligent seed pushing assembly. The seed metering plate assembly is provided with a seed hole with an annular permanent magnet; the electromagnetic intelligent seed pushing assembly comprises a control module, an electrified solenoid and a flexible seed pushing assembly with a permanent magnet sliding block and a flexible pushing disc. During working, the magnetic attraction force between the seed-metering disc permanent magnet and the sliding block permanent magnet is combined with the controllable electromagnetic force generated by the electrified solenoid to cooperatively drive the sliding block to complete the seed pushing action. The electric signals are controlled through programming, and various operation modes such as ultra-high speed, precision low loss and variable jump broadcast can be switched in real time. According to the invention, the embedded real-time monitoring and fault diagnosis of the seed pushing action are realized by using an electric signal generated by the movement of the sliding block in the induction coil. According to the invention, the problem that the existing seed-metering device is difficult to consider high-speed, low-loss and multi-mode operation and intelligent monitoring at the same time is solved.
Owner:JILIN UNIVERSITY

Device and method for recycling silicon sludge with high additional value

The invention discloses a high-added-value silicon sludge recovery device and a method thereof. The high-added-value silicon sludge recovery device comprises a furnace body, the pretreated silicon sludge feeding system comprises a material collecting bin and a discharging pipe which is communicated with the furnace body and the material collecting bin; the smelting storage system comprises a straight-through type ceramic crucible; the electromagnetic heating system comprises a graphite heater and an induction coil sleeved outside the graphite heater; the silicon monoxide collecting system comprises a collecting barrel; the high-purity silicon drawing and collecting system comprises a graphite plug positioned at the bottom of the straight-through type ceramic crucible and a driving mechanism for driving the graphite plug to move up and down in the straight-through type ceramic crucible; and the vacuum system comprises a mechanical pump communicated with the hearth of the furnace body. According to the method, the pretreated silicon sludge is directly subjected to electromagnetic induction heating in the vacuum environment, silicon in the silicon sludge reacts with silicon oxide on the surface layer to prepare silicon monoxide, meanwhile, high-purity silicon is prepared through directional solidification of redundant silicon in the silicon sludge, and then high-added-value recovery of the silicon sludge is achieved.
Owner:WUHAN UNIV OF TECH

High-temperature impurity removal and purification method of graphite material

The invention relates to the technical field of impurity removal and purification, in particular to a high-temperature impurity removal and purification method for a graphite material. Obtaining the furnace temperature and the output power at each moment in each monitoring period in each high-temperature purification process and the temperature and the voltage of each induction coil at each moment; calculating a first evaluation value, a power fluctuation degree, a second evaluation value and an evaluation coefficient of each monitoring period; determining the bridging confidence coefficient of each monitoring period in each high-temperature purification process; and the bridging phenomenon occurring in each monitoring period in the high-temperature purification process is evaluated, and the bridging phenomenon existing in the high-temperature purification furnace is eliminated, so that the graphite material is subjected to high-temperature purification. According to the method, the bridging phenomenon in the high-temperature purification furnace can be accurately evaluated, and stable operation of a high-temperature purification process and high-quality purification of a graphite material are ensured.
Owner:LIAONING GLORY SPECIAL GRAPHITE CO LTD

Multistage pumping system for adaptive offloading of a liquid from a container

A pumping system includes a plurality of interconnected integrated motor / pump modules (IMPs) submerged in a process liquid, such as liquid hydrogen (LH2), within a container, the IMPs being separately controlled by adjustable speed drives (ASDs). The rotation speeds of the IMP impellers are controlled such that the NPSH_A for each IMP remains above a minimum, critical suction head NPSH_c of the IMP, while the outlet pressure and flow of the last IMP is maintained at a specified level unless its NPSH_A falls substantially to its NPSH_c, or until the container is substantially empty. The IMPs can be identical, initially operating at the same speeds, or the first IMP can be an inducer IMP having a reduced NPSH_c. The IMPs can comprise permanent magnets or induction coils attached to their impellers that pass in proximate radial or axial alignment with stator coils. The ASDs can be variable frequency drives (VFDs).
Owner:FLOWSERVE PTE LTD

Tamper for embedding tissue samples

A tamper for making paraffin blocks for histology may include a pliable tamper head and a handle. The handle may be permanently or removably attached to the tamper by using screws, magnets, or the like. The tamper may be made from a pliable material, such as a silicone rubber, with improved thermal transfer and high latent heat. In use, the tamper may be warmed in advance to a working temperature by placing the tamper on a hot plate of the embedding station or on a dedicated smaller hot plate. Alternatively, the tamper may be heated with an electric resistive element, a thermoelectric device, or an electric induction coil.
Owner:LEAVITT MEDICAL INC

Miniaturized broadband induction type magnetic field sensor

The invention relates to the related technical field of geophysical exploration instruments, in particular to a miniaturized broadband induction type magnetic field sensor. The sensor comprises a magnetic core, an induction coil, a feedback coil and a signal processing circuit. The invention is characterized in that the magnetic core is of a long rod-shaped structure formed by laminating and curing high-permeability soft magnetic strip materials, the length of the magnetic core is 580mm-640mm, the cross section of the magnetic core is a square or an equivalent circle with the side length of 11mm-15mm, and the length-diameter ratio of the magnetic core is greater than 40; the feedback coil is formed by spirally winding a metal foil belt along the magnetic core, and the metal foil belt forms a main shielding layer for restraining interference of an external electric field at the same time. By optimizing the size and the length-diameter ratio of the magnetic core and combining the integrated design of feedback and shielding functions, while the working frequency band and the low-noise performance are ensured, remarkable miniaturization and light weight of the sensor are realized, and the portability and the layout efficiency of field exploration are greatly improved.
Owner:INSTITUTE OF GEOLOGY AND GEOPHYSICS CHINESE ACADEMY OF SCIENCES

Thermal shock testing device, system and method for SiC coating graphite piece

The invention provides a thermal shock testing device, system and method for a SiC coating graphite piece. The thermal shock test device for the SiC coating graphite piece comprises a heating chamber, a transition chamber and a cooling chamber, wherein a moving mechanism for carrying the graphite piece and switching the graphite piece between the heating chamber and the cooling chamber is arranged in the transition chamber; an induction coil for heating the graphite piece is arranged in the heating chamber; the cooling chamber is used for spraying a cooling substance to the graphite piece, and the cooling substance is a mixture of liquid inert gas and silicon dioxide wrapped paraffin phase change microcapsules. The problems of insufficient upper limit of heating temperature, poor heating uniformity of special-shaped parts, water-cooling weight loss, ultrahigh-temperature heat loss of graphite parts and the like are solved.
Owner:HUNAN UNITED SEMICON TECH CO LTD

Induction circuit for a cooktop

An induction circuit includes a first induction coil, at least one second induction coil, and switching circuitry including a shared half-bridge inverter, a first half-bridge inverter cooperating with the shared half-bridge inverter to control current through the first induction coil, at least one second half-bridge inverter cooperating with the shared half-bridge inverter to control current through the at least one second induction coil, and a first auxiliary switch in series with the first induction coil for selectively electrically coupling and electrically decoupling the first induction coil with at least one of the shared half-bridge inverter and the first half-bridge inverter.
Owner:WHIRLPOOL CORP

Electromagnetic hydraulic composite bulging and correcting method and device for pipe plate

The invention discloses an electromagnetic and hydraulic combined bulging and correcting method for a pipe plate. The method comprises the steps of 1, feeding treatment, 2, electromagnetic pre-activation treatment, 3, hydraulic precise bulging treatment, 4, pressure maintaining and shaping treatment, 5, electromagnetic and hydraulic collaborative correcting treatment and 6, material taking and post-treatment. The device comprises a machine frame which is vertically symmetrical and provided with a forming lower die and an opening and closing upper die through a hydraulic oil cylinder, a temperature sensor and a strain gauge are embedded in the lower side in a die cavity, high-frequency induction coils are arranged on the outer surfaces of the forming lower die and the opening and closing upper die, and a pulsed magnetic field generator is embedded in the top in the opening and closing upper die. A liquid injection opening is formed in the side edge of the upper opening and closing mold and is connected with a high-pressure oil pump through a pipeline; a main controller is further arranged on the rack; through a staged coupling process, the deformation resistance during bulging is reduced, elastic recovery is eliminated through cooperative shape correction, meanwhile, the device integrates multiple modules, real-time matching of electromagnetic parameters and hydraulic pressure is achieved, and the device adapts to forming of pipe plates made of different materials and in complex shapes.
Owner:南宁桂电电子科技研究院有限公司 +1

Aerosol generating apparatus

PCT designated stageWO2025167523A1TobaccoSusceptorMechanical engineering
Provided in the present application is an aerosol generating apparatus, comprising: a heating tube, wherein an insertion port is provided at an upper end of the heating tube, an aerosol generating substrate of an aerosol generating article can be inserted into the heating tube by means of the insertion port, and the heating tube comprises a heat generating layer and a tube body, the heat generating layer covering at least part of a heating area of the tube body, so that the heating tube can heat the aerosol generating substrate; and an induction coil, which surrounds the periphery of the heating tube and is used for generating a changing magnetic field. A susceptor capable of generating heat in the changing magnetic field is further arranged in the aerosol generating apparatus or the aerosol generating article, and is used for heating the aerosol generating substrate from the inside. The aerosol generating apparatus is configured such that the induction coil and the heating tube output energy independently of each other.
Owner:SHENZHEN FIRST UNION TECH CO LTD

Induction coil for medium-frequency electric furnace and medium-frequency electric furnace

The utility model relates to the technical field of metallurgical electric furnaces, in particular to an induction coil for a medium-frequency electric furnace, which comprises an induction heating coil, an upper cooling coil positioned above the induction heating coil and a lower cooling coil positioned below the induction heating coil, the upper cooling coil, the induction heating coil and the lower cooling coil are all formed by winding hollow pipe bodies in the same spiral direction, the cross section of the induction heating coil is in a D shape, and the induction heating coil comprises an inner pipe wall, an outer pipe wall and two connecting walls connected between the inner pipe wall and the outer pipe wall. The cross section of the induction heating coil is designed to be D-shaped, the inner pipe wall located on the inner side of the induction heating coil is arranged to be arc-shaped, and the outer pipe wall located on the outer side of the induction heating coil extends in the vertical direction, so that current and magnetic field distribution is optimized, and magnetic field energy acts on the surface of a workpiece on the inner side of the induction heating coil more intensively; energy loss is reduced, the heating speed of workpieces is increased, and the heating efficiency of the medium-frequency electric furnace is improved.
Owner:SHANDONG KANGDA ELECTRIC FURNACE CO LTD

Workbench of high-frequency welding machine

The high-frequency welding machine workbench comprises a rack, a liquid storage tank is arranged on the rack, a liquid storage tank is arranged in the liquid storage tank, the top of the liquid storage tank is open, elastic clamping assemblies are arranged in the liquid storage tank, and the two elastic clamping assemblies distributed oppositely are used for clamping a heat exchanger shell; and the infusion pump is connected with the water tank and the liquid storage tank. The water cooling device is novel in structure, good in water cooling effect, economical and practical, the induction coil is not prone to being burnt, and welding quality of finished products is improved.
Owner:XINCHANG KECHUANG AUTOMATION EQUIP

System using a manufacturing cell to form containers

A method and system for manufacturing containers are disclosed. The system includes one or more manufacturing cells comprised of an unloading station, a queuing / sequencing station, a heating station, an unloading station, and a molding station. The queuing / sequencing station utilizes a plurality of carrier shuttles configured to traverse a platform comprised of a plurality of induction coil sections. Each of the carrier shuttles is provided with a preform mount for receiving a preform thereon. The preforms are selected and the carrier shuttles are arranged in accordance with a predetermined sequence. At least one heater of the heating station is disposed over one of the induction coil sections and adapted to heat the preform. The heated preforms are transported by the carrier shuttles from the heating station to an unloading station, which transitions them to the molding station for a fluid (e.g., gas or liquid) blow molding operation to form the containers.
Owner:DISCMA AG

Wireless power transmission device, wireless power receiving device, and wireless power supply system

To provide a wireless power transmission device, a wireless power receiving device, and a wireless power supply system that have simple and lightweight configurations capable of being highly effective in reducing leakage magnetic fields, even at locations far from a power transmitting coil and a power receiving coil.SOLUTION: A wireless power transmission device that transmits power contactlessly includes: a power transmitting coil that transmits power; a driving induction coil provided around the power transmitting coil; and a canceling magnetic field generating coil connected in series to at least a portion of the driving induction coil so as to surround at least a portion of the power transmitting coil, in which a leakage magnetic field canceling coil is formed by the driving induction coil and the canceling magnetic field generating coil.SELECTED DRAWING: Figure 1
Owner:SPC ELETRONICS CORPORATION +1