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370 results about "Spiral coil" patented technology

Laminated special-shaped plane spiral coil winding

The invention relates to the technical field of electromagnetic coils, in particular to a laminated special-shaped plane spiral coil winding. The laminated special-shaped planar spiral coil winding is composed of at least two coil layers, and each coil layer is composed of a single special-shaped planar spiral coil. The inner ring part of the special-shaped plane spiral coil is a concentric plane spiral coil, and the outer ring part of the special-shaped plane spiral coil is a tooth-shaped spiral coil extending along the outer periphery of the concentric plane spiral coil; all phases of the coil winding are different in layer, the electrified magnetic field center of each coil layer deviates from the geometric center, and the projection of the magnetic field center of each phase in the plane of the coil winding is in central symmetry distribution. The invention innovatively provides a laminated special-shaped planar spiral coil winding, and provides a squirrel-cage equivalent rotor on the basis of the laminated special-shaped planar spiral coil winding, so as to provide competitive choices for reducing copper loss and improving heat dissipation, magnetic conductivity, structural strength and economic cost of an axial flux motor winding.
Owner:SHENZHEN DUOYUAN TUOZHAN ENVIRONMENTAL PROTECTION TECH CO LTD

Three-dimensional integrated packaging structure and packaging process thereof

The invention discloses a three-dimensional integrated packaging structure and a packaging process thereof. The three-dimensional integrated packaging structure comprises a flip or normal chip with a functional surface and an opposite back surface; the rewiring layer and the chip are vertically stacked and electrically connected with each other; electrically leading the rewiring layer out of the packaging structure; the stacking direction of the inductor and the chip is parallel to the thickness direction of the chip, the inductor and the chip, the rewiring layer and the lead-out structure are physically isolated through an insulating medium layer, the inductor is of a spiral, multi-ring layer overlapping or sectional winding structure, the inductor comprises a magnetic core, a spiral coil surrounding the surface of the magnetic core is formed through etching and electroplating processes, and the lead-out structure is arranged on the surface of the spiral coil. The spiral coil comprises a circuit A, a circuit B and a circuit C, and the magnetic core and the spiral coil are encapsulated by the insulating medium layer. The inductor and the chip are stacked in an inverted or normal mode, the three-dimensional structure saves space, reduces parasitic inductance, resistance and the like, signal transmission is stable, electromagnetic interference is small, and the three-dimensional structure is suitable for the chip packaging field of miniaturization, high integration and the like.
Owner:HEFEI SMAT TECH CO LTD

Laminated planar spiral coil winding

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.
Owner:SHENZHEN DUOYUAN TUOZHAN ENVIRONMENTAL PROTECTION TECH CO LTD

Pipe coiling device

ActiveCN223145681ULinear motionMachine
The utility model discloses a pipe coiling device, which belongs to the technical field of pipe coiling, is used for spiral pipe coiling of steel pipes, and comprises a support frame, a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve and a locking mechanism, one end of the steel pipe is connected with one end of the central shaft sleeve through a limiting mechanism and is locked through a locking mechanism; the linear motion mechanism and the rotary motion mechanism are used for driving the center shaft sleeve to do linear motion and rotate around the center shaft at the same time, and spiral pipe coiling of the steel pipe is achieved. The pipe coiling device can effectively solve the problems that in the prior art, a spiral pipe machined by a traditional pipe coiling machine is large in coaxiality deviation, and the strict requirement of high-precision equipment for pipe precision is difficult to meet; the steel pipe is easy to pop up accidentally in the machining process, and serious potential safety hazards are caused to operators and peripheral equipment.
Owner:CHENGDU HOUPU HYDROGEN ENERGY TECH CO LTD

Immersed rotating packed bed combined coil device and method for reaction extraction

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.
Owner:BEIJING UNIV OF CHEM TECH

Horizontal type continuous nitration pipeline reactor and manufacturing method of refrigerant circulation assembly of horizontal type continuous nitration pipeline reactor

The invention discloses a horizontal continuous nitration pipeline reactor and a manufacturing method of a refrigerant circulation assembly thereof, and belongs to the technical field of chemical pipeline reactors. The reactor mainly comprises a barrel assembly, a stirring assembly and a refrigerant circulating assembly, and has the advantages of high heat exchange capacity, large unit heat transfer area, high safety and the like. The manufacturing method of the refrigerant circulation assembly is characterized in that a special accessory concentric opposite feeding mechanism is adopted, the mechanism is provided with a bolt chuck and a nut chuck which are coaxial and can move synchronously, and an inner long beam clamping jaw and an outer long beam clamping jaw which can move in the radial direction are arranged on the bolt chuck and the nut chuck respectively. The concentric and opposite accessory feeding mechanism can accurately position components such as angle steel, U-shaped bolts, gaskets and the like and automatically achieve efficient fastening with the spiral coil pipe. According to the method, the technical bottleneck caused by the limited assembly space of the refrigerant circulation assembly is fundamentally solved, efficient and accurate automatic assembly is achieved, and the method has important engineering application value and popularization significance in the technical field of nitrification pipeline reactors.
Owner:YANGZHOU TONGYANG CHEM EQUIP CO LTD

Wireless ocular surface pressure monitoring system based on multi-frequency phase shift decoupling self-calibration algorithm

The present invention discloses a fully wireless ocular surface pressure monitoring system based on a multi-frequency phase-shift decoupling self-calibration algorithm, relating to the technical field of intelligent ophthalmic detection. The system comprises a wearable three-layer contact lens, wherein the outer layer is embedded with a capacitive eyelid pressure sensor and a first spiral coil, and the inner layer is embedded with a piezoresistive intraocular pressure sensor and a second spiral coil, which are respectively tuned to different center frequencies to modulate pressure changes into radio frequency signals. Externally powered receiving glasses or eye masks comprise a multi-frequency transmitting coil, a rectifier circuit and a receiving coil, which supply energy to the sensing structure in the contact lens and sense and obtain a composite signal formed by spatial superposition, which is transmitted to a processing circuit and then sent to a mobile computing terminal. The terminal performs multi-frequency decoupling, sparse matrix separation and temporal self-calibration processing to generate calibration curves of eyelid pressure and intraocular pressure, thereby realizing real-time perception of dual parameters in the eyes-closed state. The system has the advantages of compact structure, high signal separation accuracy and high degree of wirelessness.
Owner:THE EYE HOSPITAL OF WENZHOU MEDICAL UNIVERSITY

Anti-offset wireless charging system magnetic coupling mechanism and optimization design method

The invention discloses an anti-offset wireless charging system magnetic coupling mechanism and an optimization design method. A transmitting end of the magnetic coupling mechanism adopts a coil of a bipolar reverse high anti-offset structure, and a receiving end adopts a circular plane spiral coil to reduce the weight of a vehicle-mounted end energy pickup mechanism; the transmitting end bipolar reverse high-anti-offset structure is formed by winding uninterrupted litz wires, an outer ring coil and an inner ring coil are located on the same plane and concentric, and the manufacturing directions are opposite, so that the bipolar reverse characteristic is formed. The transmitting end bipolar reverse high anti-offset structure coil also adopts an anti-offset particle swarm optimization design method considering receiving end plane movement mutual inductance smoothness and coil wire length, and under the condition of considering the transmitting end coil wire length, the magnetic field coupling uniformity in the 360-degree plane movement process of the receiving end is improved. The magnetic coupling mechanism provided by the invention has good anti-offset performance, and still has stable magnetic field coupling characteristics in a large-range moving process of a receiving end.
Owner:HOHAI UNIV

Multi-channel composite variable-frequency scale ion resonance facility

The utility model provides a multi-channel composite variable-frequency scale ion resonance facility which comprises a shell, a spiral cable, a water inlet straight pipe, a middle spiral coil pipe, a water outlet straight pipe, a flow regulating valve, a composite variable-frequency signal generator and a power supply, and the shell is a cylinder and is made of 316 austenitic stainless steel or 304 austenitic stainless steel; the spiral cable is spirally wound and mounted on the surface of the shell; the water inlet straight pipe, the middle spiral coil pipe and the water outlet straight pipe are made of magnetisable materials; the composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power source and the spiral cable, and circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and generates resonance under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ion combination and even precipitation state is converted into the calcium and magnesium ion unsaturated state with high fluid solubility, and conditions are provided for subsequent access to a water inlet of heat exchange equipment, equipment maintenance cost reduction and heat exchange efficiency improvement.
Owner:SINOPEC GUANGZHOU ENG CO LTD +1

Die for bending forming of multiple rows of spiral coils and forming regulation and control method

The invention relates to the technical field of metal pipe bending forming manufacturing, in particular to a die for bending forming of multiple rows of spiral coil pipes and a forming regulation and control method, and aims to solve the problems that in an existing spiral coil pipe bending technology, the shape cannot be flexibly changed due to die limitation and shape errors are caused by springback. Comprising a rotating center shaft with a protruding structure, a rolling wheel with a space reserved inside, a gasket with a space reserved inside, a circular baffle used for limiting movement of the rolling wheel and the gasket, and a bolt used for fixing the baffle and the rotating shaft. The base circle and the screw pitch of the coil pipe in the target shape are repeatedly iterated through finite element simulation and based on the trained springback value prediction model, and finally the corrected bent base circle and the screw pitch which reduce the influence of the springback value can be obtained, so that it is ensured that the shape of the spiral coil pipe is consistent with the predicted shape, and the machining quality is guaranteed.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1

Waste heat recovery device for waste water after fabric dyeing treatment

The utility model relates to a waste heat recovery device for waste water after fabric dyeing treatment, the waste heat recovery device comprises a barrel body, a heat exchange pipe and a cleaning assembly, the heat exchange pipe is a spiral coil pipe and is located in the barrel body, the cleaning assembly comprises a cleaning ring, a brush and a driving part, the cleaning ring is arranged on the heat exchange pipe in a sleeving manner, and the brush is located in the barrel body. The brush is arranged on the cleaning ring and used for brushing the outer side wall of the heat exchange pipe, and the driving part is used for driving the cleaning ring to move in a reciprocating mode in the spiral direction of the heat exchange pipe. The heat exchanger has the effect of reducing impurities in waste water adhered to the outer side wall of the exchanger so as to prolong the service life of the heat exchange pipe.
Owner:SHAOXING SANJIE TEXTILE PRINTING & DYEING CO LTD

Water-cooling heat dissipation device for cooling environment-friendly material

The invention discloses a water-cooling heat dissipation device for cooling environment-friendly materials, and belongs to the field of water-cooling heat dissipation devices.The water-cooling heat dissipation device comprises a mixing barrel and a water tank, a cooling-water machine is installed on the water tank, a stirring rod and a plurality of spiral coils are arranged in the mixing barrel and the water tank respectively, and the top ends and the bottom ends of the spiral coils are communicated with a water conveying pipe and a water return pipe respectively; the other end of the water conveying pipe is communicated and connected with the water inlet end of the cooling-water machine, a water outlet main pipe is arranged at the water outlet end of the cooling-water machine, a plurality of water outlet branch pipes are arranged on the water outlet main pipe in a split-flow mode, and the water outlet branch pipes and the water return pipes are communicated and connected with an elastic water pipe through flange plates respectively; each jacket is provided with a cold water bag and an elastic connecting sleeve, the elastic connecting sleeves among the jackets are detachably connected, and the cold water bags in the jackets are respectively communicated and connected with the elastic water pipe.
Owner:SHANGHAI DINGZUN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD

Fin coil pipe type gas-fired boiler

The finned coil pipe type gas boiler comprises a boiler body, finned heat exchange pipes and a combustor, the boiler body comprises a combustion barrel, a heat exchange barrel and a connecting barrel, and the finned heat exchange pipes are arranged in the combustion barrel and the heat exchange barrel correspondingly; the fin type heat exchange pipe is a single-circle or multi-circle fin type coil pipe; the fin type coil pipe comprises a spiral coil pipe and a fin plate fixed on the spiral coil pipe; and a combustion rod of the combustor extends into the combustion barrel. The finned coil type gas boiler can effectively improve the heat conversion efficiency, reduce the equipment size and facilitate installation and transportation.
Owner:周清桂

Electromagnetic induction structure

The utility model discloses an electromagnetic induction structure which comprises a magnet assembly and a spiral coil and is characterized in that the magnet assembly is coaxially arranged outside or inside the spiral coil to provide a radial single-polarity magnetic field for the spiral coil, the magnetic induction line of the magnetic field is perpendicular to a coil wire, and the magnet assembly and the spiral coil move relatively. A radial single-pole magnetic ring for radiation magnetization or a common magnet with the same polarity facing the coil and arranged annularly is adopted as a magnet assembly to provide a radial single-polarity magnetic field for the spiral coil, and when the electromagnetic induction structure is applied to a generator, electric energy output is larger than that of a voice coil motor; when being applied to a motor, the motor can do linear / arc / circular motion, and the stroke is longer than that of a voice coil motor while the output power is ensured.
Owner:李东旭

Biodegradable color master batch and production line air cooling device thereof

PendingCN121064609ACold airProcess engineering
The invention provides a biodegradable color master batch and a production line air cooling device thereof, and belongs to the field of air cooling devices.The biodegradable color master batch production line air cooling device is composed of a cooling box, a U-shaped support, a cooling mechanism, an air cooling mechanism, a shaking mechanism and a conveying mechanism. Due to the special structure of the spiral conveyor, the biodegradable color master batches can be continuously turned over in the conveying process, so that the contact between the biodegradable color master batches and cold air is improved, cooling is accelerated, the fan blades are driven to rotate through rotation of the mounting shaft, wind can be generated when the fan blades rotate, the wind generated by the fan blades can flow upwards, and the cooling effect is improved. Cold liquid flows in the spiral coil pipe, so that air becomes cold air after being in contact with the spiral coil pipe, the cold air can penetrate through the screening drum to enter the screening drum to be in contact with the biodegradable color master batch, and meanwhile, the cold air flowing upwards can penetrate through the exhaust hole A;
Owner:FOSHAN CANGLONG NEW MATERIAL CO LTD

An improved spiral coil heater for oil field heaters

The utility model discloses an improved spiral type coil heater for oil field heating furnace belongs to heating furnace technical field, including heater main part, and the heater main part includes feed header, discharge header and spiral heat exchange pipe, and spiral heat exchange pipe is connected in feed header and discharge header, shockproof subassembly, shockproof subassembly includes first fixed plate, second fixed plate, plug -in spare and fixed bolt, and spiral heat exchange pipe is placed between first fixed plate and second fixed plate, and plug -in spare is inserted in first fixed plate, and fixed bolt is inserted in second fixed plate, and fixed bolt is connected with plug -in spare thread, the utility model discloses, be provided with shockproof subassembly in the material flow process, and spiral heat exchange pipe vibrates with the flow of material along high frequency, and the plug -in board between first fixed plate and second fixed plate strengthens the intensity of spiral heat exchange pipe, and then eliminates the vibration of spiral heat exchange pipe to a certain extent, to prevent the stress fatigue of spiral heat exchange pipe after the vibration of production time.
Owner:HUNAN YILIDA IND CO LTD

High-temperature carbon particle cooling device and system

The invention relates to a high-temperature carbon particle cooling device and system, the device comprises a particle channel and at least one heat exchange channel arranged in the particle channel, and the heat exchange channel is arranged along the axial direction of the particle channel. The heat exchange channel comprises at least one heat exchange coil pipe which is coiled in a spiral shape. When the heat exchange channel comprises a plurality of heat exchange coil pipes, the heat exchange coil pipes are coaxially arranged, the heat exchange coil pipes are connected in parallel or in series or in series-parallel connection in a mixed mode, and the connecting positions of the heat exchange coil pipes are located outside the channel where the high-temperature carbon particles flow. The cooling device recovers waste heat of the high-temperature carbon particles in a high-efficiency and high-grade mode, so that the requirement for other energy sources is reduced, and the comprehensive utilization rate of the energy sources is improved. The joints of the heat exchange coil pipes are all located outside the channels where the particles flow, so that the joints are prevented from being damaged due to direct long-term contact with the high-temperature carbon particles, and the situation of heat exchange medium leakage caused by the quality problem of the joints in the channels where the high-temperature carbon particles flow is avoided.
Owner:NANJING HUADIAN ENERGY SAVING & ENVIRONMENTAL PROTECTION EQUIP

Apparatus for heating molten steel in tundish in continuous casting of steel

To provide an apparatus for heating molten steel in a tundish in continuous casting of steel.SOLUTION: In an airtight tundish, a resistance heating element made of graphite is arranged above the molten steel surface so as to closely face the molten steel surface in an inert atmosphere. A spiral coil is formed on the disc-shaped heating element. The temperature of the heating element is raised to about 2000°C by AC energization to radiate and heat the space in the tundish. On the other hand, induction heating and induction stirring occur immediately below the molten steel surface below the coil. The power loss due to the self-inductance contributes to heat generation, and a power efficiency of 90% is obtained. A ceramic coating is applied to the upper surface of the heating element to suppress upward radiation and to improve the durability of the inner wall of the refractory. The trouble that slag and molten steel are stuck to the inner wall is eliminated by suitable upward radiation.SELECTED DRAWING: Figure 1
Owner:山田荣子

Configurations of coil for endovascular therapy system

An endovascular therapy system includes an endovascular device. The endovascular device includes an elongated body configured to be introduced into vasculature of a patient. The endovascular device includes a coil structure at a distal portion of the elongated body. The coil structure includes at least a first coil portion and a second coil portion. The first coil portion can be configured to carry a plurality of electrodes. The second coil portion can be formed from a coiled wire such that the second coil portion together with the coiled wire defines a coiled coil. The coiled wire can extend distally of a distal end of the first coil portion and be configured to anchor the elongated body and the coil structure within the vasculature of the patient.
Owner:COVIDIEN LP

Coil component and manufacturing method therefor

To achieve a high inductance value while reducing the entire thickness in a coil component having a structure in which spiral coil patterns are stacked. A coil component includes: a coil part having a structure in which interlayer insulating films and spirally wound coil patterns are alternately stacked in the axial direction of the coil component; and magnetic element members embedding therein the coil part. The interlayer insulating film covering, from one end side in the axial direction, one coil pattern positioned at the one end in the axial direction is higher in permeability than the interlayer insulating films. Thus, the one coil pattern positioned at the end portion is covered with the interlayer insulating film having a high permeability, so that it is possible to achieve a high inductance value while reducing the entire thickness.
Owner:TDK CORP

Device and method for cooling aggregate for the production of fresh concrete

The invention relates to a device and a method for cooling an aggregate for the production of fresh concrete. The device comprises a cooling drum (2) which is designed to continuously convey cooling water (16) and the aggregate in counter-flow while contacting one another, wherein the cooling drum (2) has a cylindrical housing (4), wherein a spiral conveyor (5) having a spiral coil (14) is arranged in the interior of the housing (4), wherein the cooling drum (2) has, in the longitudinal direction of the housing (4), an inlet for the aggregate and an outlet (7) for the cooling water (16) on one end and an outlet for the aggregate (6) and an inlet (6) for the cooling water (16) on the other end. According to the invention, the spiral conveyor (5) is a modification of a screw conveyor in which a central axial drive shaft is dispensed with.
Owner:HELD OTTO WILHELM

A new polycarboxylic acid water-reducing agent liquid drying device

The utility model relates to a novel polycarboxylate water reducing agent liquid drying device belongs to water reducing agent processing technical field. Mainly include frame, drying tank, main stirring shaft, vice stirring shaft, electric heating tube and drive mechanism, drying tank is double -layer shell structure, interlayer spiral coiled electric heating tube, and main stirring shaft and vice stirring shaft cooperate through drive mechanism, and vice stirring shaft can realize positive -negative rotation, and the uniformity of liquid turning over is improved significantly, and vice stirring blade and vice stirring blade are set up in the reverse direction, form cross flow effect, further strengthen stirring efficiency, drying tank shell is wrapped and is kept warm shell cover, and the heat loss is reduced, and the heat energy utilization rate is improved. The utility model can effectively solve the existing drying device turning over not fully, the problem of uneven heating, greatly shorten drying time, improve drying efficiency and product quality.
Owner:YUNNAN WUXI TECH CO LTD

Power division chip circuit structure with reconfigurable working mode and working method thereof

The invention provides a working mode reconfigurable power division chip circuit structure and a working method thereof. The circuit structure comprises an input port tap, two output port taps, a three-wire coupling spiral coil, a grounding pole and two control switches. One input port tap is connected with a middle coil of the three-wire coupling spiral coil to serve as an incident signal input port; the two output port taps are connected with two ends of an outer side coil of the three-wire coupling spiral coil to serve as output signal output ports; the two ends of the grounding pole are connected between the tail ends of the middle coils of the three-wire coupling spiral coils through the control switches respectively. The two control switches are used for switching the working mode of the working mode reconfigurable power division chip circuit structure. According to the power divider, the connection state of the three-wire coupling spiral coil and the grounding pole is changed by switching the on-off state of the control switch, switching of two working modes of power division and balun is achieved in the same compact circuit structure, and efficient utilization of the chip size is achieved.
Owner:SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP

A space-intensive flocculation water treatment device

The present invention discloses a space-intensive flocculation water treatment device, comprising a sedimentation separation mechanism and a spiral coil wound around the outer side thereof. The sedimentation separation mechanism comprises a first outer cone, a first inner cone disposed within the sedimentation separation mechanism, and multiple layers of sedimentation cone plates disposed between the first inner cone and the first outer cone. One end of the spiral coil is provided with a sewage inlet, and the other end is disposed within the first inner cone. A conical plate separation zone is formed between the first outer cone and the first inner cone, and a clear water zone is formed above the conical plate separation zone. The present invention can make greater use of the space of the equipment, achieve a higher sewage treatment capacity per unit volume of the equipment, quickly form larger and dense flocs, achieve high separation efficiency between the flocs and the water body, and reduce the hydraulic retention time by more than 50% compared to traditional flocculation devices, thereby improving the flocculation treatment speed and efficiency. The device is suitable for various sewage treatments, saves space, improves efficiency, and is suitable for sewage treatment projects with limited space.
Owner:SHAANXI LANHUI ENGINEERING DESIGN CO LTD

Magnetic integrated PFC inductor and PFC circuit

The utility model provides a magnetic integrated PFC inductor and a PFC circuit, and belongs to the technical field of PFC inductors. Each magnetic side column of the inductor and the wound spiral coil form an inductor. The magnetic side columns are connected through the magnetic conductive plate, and a plurality of inductors are integrated into one device, so that the overall size is reduced. The magnetic side columns, the magnetic middle columns and the magnetic conductive plates form a closed magnetic circuit, namely, the magnetic side columns, the magnetic conductive plates, the magnetic middle columns, the magnetic conductive plates and the magnetic side columns, so that a magnetic field generated by the spiral coils on the magnetic side columns is spread along the closed magnetic circuit. Wherein the magnetic middle column with high magnetic conductivity guides magnetic circuits of the two adjacent magnetic side columns to the magnetic middle column, and the magnetic fields of the adjacent magnetic side columns are opposite in magnetic flux direction in the magnetic middle column and can counteract each other, so that the magnetic fluxes of the two magnetic side columns are not coupled with each other, and the mutual inductance effect can be reduced. Therefore, mutual inductance reduction by increasing the inductor distance can be avoided, and the overall size occupied by the inductor is reduced.
Owner:SHIJIAZHUANG TONHE ELECTRONICS TECH CO LTD

A standby mode control method based on a magnetic wireless fast charging power bank

The application relates to the technical field of mobile power sources, and discloses a standby mode control method based on a magnetic wireless fast-charging mobile power source, a spiral coil is divided into a driving section and an induction section which are electrically independent and magnetically coupled through a 0.2mm insulation gap, and the method comprises the following steps: when the mobile power source is in a standby state, triggering a wake-up detection at fixed time intervals, which comprises: injecting a square wave detection pulse into the induction section; synchronously collecting mutual inductance voltage values of the driving section timing at a preset sampling period; calculating average voltage values of the mutual inductance voltage values; and comparing the average voltage values with a voltage threshold value to wake up the mobile power source. The application realizes high-sensitivity wake-up detection in a low-power-consumption state, effectively avoids false wake-up and energy waste, and improves the intelligent control level and overall energy efficiency performance of the magnetic wireless fast-charging mobile power source.
Owner:GUANGZHOU WESDAR ELECTRONICS TECH CO LTD

Common mode filter

To improve high frequency characteristics of a common mode filter by reducing inter-wire capacity in a section close to a terminal electrode.SOLUTION: A common mode filter 1 comprises conductor layers 100 and 200, which are laminated via an insulation layer, and terminal electrodes E1-E4. The conductor layer 100 includes a spiral coil pattern 110 of which the outer peripheral end is connected to the terminal electrode E1 and the inner peripheral end is connected to the terminal electrode E3. The conductor layer 200 includes a coil pattern 210 of which the outer peripheral end is connected to the terminal electrode E2 and the inner peripheral end is connected to the terminal electrode E4. An outermost peripheral turn 111 of the coil pattern 110 has a non-overlapped section S1 which circulates without overlapping an outermost peripheral turn 211 of the coil pattern 210, or an innermost peripheral turn 112 of the coil pattern 110 has a non-overlapped section S2 which circulates without overlapping an innermost peripheral turn 212 of the coil pattern 210.SELECTED DRAWING: Figure 9
Owner:TDK CORP

Spiral plane water-cooling burner

The utility model relates to a spiral plane water-cooling combustor which can be used for fuel gas premixed combustion. The device comprises a spiral coil pipe, a gas uniformizing plate, a gas inlet pipe, a central water pipe, a gas inlet channel and a mixed gas cavity, the central water pipe is sleeved with the gas inlet pipe, the gas inlet channel is formed between the outer wall of the central water pipe and the inner wall of the gas inlet pipe and communicated with the mixed gas cavity, and the gas uniformizing plate is arranged at the bottom of the mixed gas cavity. The gas uniformizing plate is located above the spiral coil pipe, the spiral coil pipe is communicated with the central water pipe, gas uniformizing holes are formed in the gas uniformizing plate, the spiral coil pipe is formed by coiling a finned pipe in a plane spiral shape, the finned pipe comprises a base pipe of an oval structure and fins, and the base pipe is provided with a gas uniformizing hole. The fins are formed by welding flat steel strips which are spirally and uniformly wound on the outer wall of the base tube, the fins are pressed to form flanging fins, and an airflow channel is formed between the flanging fins and the outer wall of the base tube.
Owner:HANGZHOU KAVALDON THERMAL ENERGY TECH CO LTD

Double-helix copper pipe coiler device and process thereof

The invention discloses a double-helix copper pipe coiling machine device and a process thereof, and belongs to the technical field of material processing and forming. Comprising a spiral pipe coiling mechanism and a control mechanism, the spiral pipe coiling mechanism comprises a rack, and a clamp holder mechanism, a power head mechanism, a countershaft mechanism, a spiral pipe coiling tool, a double-copper-pipe leading-in mechanism and a pipe locking tool which are sequentially connected together are installed on the rack; the clamp holder mechanism locks the tip through a tailstock sliding operating rod, the power head mechanism controls rotation and the rotation speed through a power head sliding operating rod, and the shaft alignment mechanism controls an optical shaft to be aligned with the tip through a shaft alignment mechanism pressing rod. The spiral tube coiling tool is provided with an optical axis, a tip, a spiral sleeve mould and a profiling tool, and the opposite end surfaces of the profiling tool and the spiral mould are in spiral surface contact; the double-copper-pipe introducing mechanism introduces copper pipes through a feeding trolley; the defects of section deformation, low precision, poor efficiency and the like in the prior art are overcome, and the machining precision, stability and production efficiency of workpieces such as spiral coils are improved.
Owner:CHINA COAL TECH & ENG GRP SHENYANG ENG CO

Unmanned aerial vehicle WPT system based on integrated coupling mechanism and parameter design method

The invention provides an unmanned aerial vehicle WPT system based on an integrated coupling mechanism and a parameter design method, and is used for solving the problems that an unmanned aerial vehicle WPT system of an existing integrated coupling mechanism is large in weight, high in cost and small in transmission power. Comprising a transmitting end and a receiving end, and the transmitting end comprises a first transmitting polar plate and a second transmitting polar plate; the receiving end comprises a first spiral coil and a second spiral coil, the first spiral coil is connected with one end of a first compensation inductor, one end of the second spiral coil is connected with one end of a second compensation inductor, and the other ends of the first compensation inductor and the second compensation inductor are respectively connected with two input ends of a rectifier. The first spiral coil and the second spiral coil are both formed by winding copper foil strips. The receiving end adopts a rectangular hollow-core spiral coil formed by winding a copper foil strip, and the rectangular hollow-core spiral coil and the planar polar plate transmitting end form a coupling mechanism. Cross coupling is realized through an electromagnetic field, and the system has the advantages of light weight, low cost and high power.
Owner:CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY