Patents
Literature

114results about How to "Reduce fever" patented technology

Compact axial-flow magnetic-levitation artificial heart pump

InactiveCN102397598ANo mechanical wearReduce feverSuction devicesImpellerArtificial heart
The invention provides a compact axial-flow magnetic-levitation artificial heart pump, in particular to an artificial heart pump characterized in that two permanent magnet bearings and a mix of radial magnetic bearing suspension, and the radial magnetic bearing and a permanent magnet motor share a stator and a rotor. The compact axial-flow magnetic-levitation artificial heart pump has the structure that the compact axial-flow magnetic-levitation artificial heart pump comprises a stator assembly, a rotor assembly, a front guidance impeller and a rear guidance impeller; a taper-shaped or axial permanent magnet bearing is respectively formed by a first permanent magnet (9) and a right permanent magnet ring (14) as well as a second permanent magnet (19) and a left permanent magnet ring (18) to realize the purpose that the rotor axially supports in a suspension mode; a torque coil (5) and a suspension coil (7) are respectively wound on a motor stator (6); and with a certain decoupling control algorithm, the motor stator not only generates torque force but also generates radial suspension support force. In the compact axial-flow magnetic-levitation artificial heart pump, the rotor is supported by permanent magnetic force and electromagnetic force, and the compact axial-flow magnetic-levitation artificial heart pump has the advantages of small damage on blood, less radiation, compact structure and the like, is easy to transplant, is suitable for patients suffering from cardiac function failure, heart diseases and the like and can be used for ventricular assisting for a long time or a short time.
Owner:WUHAN UNIV OF TECH

Stator and rotor structure of permanent magnet motor

The invention discloses a stator and rotor structure of a permanent magnet motor, wherein the stator and rotor structure can enable the magnetic reluctance phase difference of a quadrature-direct axis magnetic circuit to become smaller and the magnetic flux leakage to be reduced. The structure comprises a stator core and a rotor core, wherein the stator core is provided with a plurality of stator grooves and stator teeth; a plurality of pairs of magnetic poles are uniformly distributed at the periphery of the rotor core; the bottom of each stator groove is composed of a circular arc and a linear which is connected at two ends of the circular arc, the ratio of the diameter of the circular arc to the outer diameter of the stator core is 0.7-0.74; the ratio of the difference between the outer diameter of the stator core and the outer diameter of circular arc of the stator core to the double value of the width of each stator tooth is 1.1-1.3; the rotor core is provided with magnetic grooves corresponding to the inner sides of the magnetic poles; two ends of each magnetic groove are respectively provided with a separated magnetic air gap, and the separated magnetic air gaps are communicated with the two ends of each magnetic groove; a plurality of strip-shaped magnetic bundle settling grooves are arranged between each magnetic groove and the corresponding outer end surface of each magnetic pole; and a groove is respectively arranged between two adjacent poles.
Owner:SHANGHAI HIGHLY (GROUP) CO LTD

Pump-controlled power recovery hydraulic control system of hydraulic cylinder testing test stand

The invention discloses a pump-controlled power recovery hydraulic control system of a hydraulic cylinder testing test stand. The pump-controlled power recovery hydraulic control system of the hydraulic cylinder testing test stand comprises a tested hydraulic cylinder pump control system which is used for controlling the moving speed and the displacement of a tested hydraulic cylinder, a loading hydraulic cylinder pump control system which is used for controlling loading force of a loading hydraulic cylinder, an auxiliary system which is formed by a low-pressure oil replenishing system and a control oil system, and a power recovery system. A main pump motor, a main pump and a loading motor are coaxially and mechanically connected, the main pump motor is used for driving the main pump, most output power of the main pump is finally recovered to the loading motor, the loading motor drives the main pump through mechanical transmission and the power repetitively circulates among the main pump motor, the main pump, the loading motor and the main pump to achieve the goal of power recovery. The pump-controlled power recovery hydraulic control system of the hydraulic cylinder testing test stand has the advantages of low energy consumption, less emitted heat, low installed power and the like by adopting a closed pump control system.
Owner:YANSHAN UNIV

Method for manufacturing medium and high-voltage anode aluminum foil for aluminum electrolytic capacitor

InactiveCN101950688AReduce feverPrevent heat deformationElectrolytic capacitorsConversion coatingSulphate Ion
The invention discloses a method for manufacturing a medium and high-voltage anode aluminum foil for an aluminum electrolytic capacitor, which sequentially comprises the following steps of: 1) pretreating an optical foil; 2) putting the optical foil into acid solution in a ratio of chloride ion to sulfate ion of 5-15:1, then applying an alternating current with the current density of 60 to 100mA/cm<2> to the optical foil for primary corroding and hole forming, then putting the optical foil into acid solution in the ratio of the chloride ion to the sulfate ion of 1:9.5-16, and then applying a direct current with the current density of 250 to 300mA/cm<2> to the optical foil for primary corroding and hole forming; 3) after primary cleaning, performing secondary corroding and reaming on the optical foil in the acid solution; 4) after secondary cleaning, drying the optical foil by using a drying furnace to obtain the corroded foil finished product; and 5) performing conversion coating on the corroded foil finished product to obtain the medium and high-voltage anode aluminum foil finished product. In the method for manufacturing the medium and high-voltage anode aluminum foil for the aluminum electrolytic capacitor provided by the invention, the surface dislocation and defect parts of the optical foil are subjected to pitting by the alternating current, and then the optical foil is subjected to primary corroding and hole forming by the direct current, so that heating is reduced, the deformation of the aluminum foil because of heating is prevented, the surface expansion rate of the aluminum foil is increased, and specific volume is improved greatly.
Owner:南通华冠电子科技有限公司

Three-station isolating switch

The invention discloses a three-station isolating switch which comprises a rack, disconnecting links, fixed contacts, grounding contacts and an operating mechanism. The rack is connected with a rotating shaft in a pivotal mode, and the rotating shaft drives the disconnecting links to rotate through first connecting levers and insulating pull rods. The operating mechanism comprises a shell, the shell is connected with a first operating shaft and a second operating shaft in a pivotal mode, and the first operating shaft is fixedly connected with the rotating shaft. The first operating shaft is fixedly connected with a first gear and an isolating limiting plate. The isolating limiting plate is provided with a first positioning hinge pin in a penetrating mode, and the two ends of the first position hinge pin are connected with the first operating shaft through two tension springs. The shell is provided with a switching-on groove, a switching-off groove and grounding grooves which are matched with the first positioning hinge pin. The second operating shaft is fixedly connected with a second gear and a connecting lever, wherein the connecting lever is connected with the shell through a second positioning hinge pin and a compression spring. The shell is provided with a second arc hole which is matched with the second positioning hinge pin. The second gear is not matched with the first gear in a switching-on state and a switching-off state and is matched with the first gear in a grounding state. The three-station isolating switch is compact in structure, reliable in action and convenient to maintain.
Owner:XIAMEN XEC ELECTRIC

Constant-pressure variable intelligent air compressor

The invention relates to a constant-pressure variable intelligent air compressor, which comprises an electric motor and a compressor host, wherein the electric motor is a rare earth permanent magnet synchronous motor, a motor shaft of the rare earth permanent magnet synchronous motor and a male rotor shaft of a male rotor form an integrated structure, and the motor shaft is formed by extending the male rotor shaft into a shell of the electric motor; the air compressor further comprises a frequency converter, an intelligent controller, a pressure transmitter and a temperature sensor; he output end of the intelligent controller is connected with the electric motor through the frequency converter, and is connected with the compressor host through a loading and unloading electromagnetic valve; the pressure transmitter and the temperature sensor are respectively arranged on an exhaust port and a compressed air inlet of the compressor host, and the output end of the pressure transmitter and the output end of the temperature sensor are respectively connected with the input end of the intelligent controller. According to the invention, the volume, the weight and the loss of the air compressor are remarkably reduced, heating is reduced, and efficiency is improved, and actions, such as soft start, constant-pressure air supply, noise reduction, energy conservation and the like, can be realized.
Owner:WUXI WOYO SUPERDO COMPRESSOR

Lowing control system for movable arm of hydraulic excavator for mines

ActiveCN102102370ADecentralization speeds upReduce feverMechanical machines/dredgersFuel tankThrottle
The invention discloses a lowering control system for a movable arm of a hydraulic excavator for mines, and relates to a hydraulic excavator. The system solves the problems that the prior art can only control the lowering speed of the movable arm and cannot utilize the impact energy generated by dead weight so as to cause energy waste. The system consists of a main pressure oil passage and a pilot control oil passage, wherein the main pressure oil passage consists of a left shunt block, a right shunt block, a left one-way throttling valve, a left movable arm cylinder, a safety valve, a right movable arm cylinder, a right one-way throttling valve and a hydraulic pipeline; and the pilot control oil passage consists of a remote control valve, an electromagnetic switching valve, a left movable arm cylinder one-way valve, a left movable arm cylinder regeneration valve, a right movable arm cylinder regeneration valve, a right movable arm cylinder one-way valve, an oil tank and a hydraulic pipeline. In the process of lowering the movable arm, the impact energy generated by lowering due to the dead weight of the movable arm is fully utilized for regeneration, so energy is saved, heating of a hydraulic system is reduced, lowering of the movable arm is quickened, and the work efficiency of the hydraulic system of the hydraulic excavator for mines is improved.
Owner:TAIYUAN HEAVY IND

Testing system and testing method for high speed performance of aerostatic thrust bearings

The invention discloses a testing system and a testing method for high speed performance of aerostatic thrust bearings. The testing system comprises an annular casing, wherein a central spindle is arranged in an inner cavity of the annular casing; two aerostatic radial bearings are arranged in the middle of the central spindle; a rotary disk is arranged on a right extending section of the centralspindle; the two aerostatic thrust bearings are arranged on each of the left side and the right side of the rotary disk; a gas supply pipeline simultaneously supplies gas to the two aerostatic radialbearings and the two aerostatic thrust bearings, so that the central spindle is suspended; a turbine is fixed on a left extending section of the central spindle; a left cover plate covers the turbine;second gas supply holes introduce gas into the left cover plate to drive the turbine to rotate; the left side of the turbine is locked by a locking nut; a loading hole introduces the gas into a loading cover to apply axial pressure to the left end face of the central spindle; the testing system further comprises a detection part and a gas supply part. The testing system and the testing method disclosed by the invention have the advantage that various performance parameters of the aerostatic thrust bearings can be tested at different rotating speeds and gas supply pressures.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Control method and system of air conditioner carrier frequency and air conditioner

The invention provides a control method and system of air conditioner carrier frequency, an air conditioner, a computer device and a computer readable storage medium. The control method of the air conditioner carrier frequency comprises the steps that the rotating speed of a compressor of the air conditioner is acquired in real time; the rotating speed of the compressor and the preset rotating speed are compared; if the rotating speed of the compressor is lower than the preset rotating speed, the carrier frequency of the air conditioner is set to be the first preset carrier frequency; if the rotating speed of the compressor is higher than or equal to the preset rotating speed, the carrier frequency of the air conditioner is set to be the second preset carrier frequency; and the second preset carrier frequency is larger than the first preset carrier frequency. According to the technical scheme of the control method and system, when the rotating speed of the compressor is low, low carrier frequency is adopted, the opening and closing loss of a module is reduced, and the heating of the module is reduced; and when the rotating speed of the compressor is high, high carrier frequency isadopted, the noise of the compressor is reduced, the heating of the compressor is reduced, and the control performance and the stability of the system are improved.
Owner:GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1

Active and passive magnetic gas hybrid bearing

InactiveCN111102293AReduce feverAvoid feverMagnetic bearingsPhysicsEngineering
The invention discloses an active and passive magnetic gas hybrid bearing. The active and passive magnetic gas hybrid bearing is a hybrid bearing suspension bearing which is composed of a stator 1, acoil 4, a permanent magnet 5, a gas foil bearing 13 and an auxiliary supporting structure, namely a left insulating liner 2 and a right insulating liner 3, wherein the coil is wound around a magneticpole 9, the permanent magnet 5 is installed at a magnetic pole gap 10 close to the center position, and the permanent magnet and an electromagnetic magnetic circuit are kept in the same direction; andthe gas foil bearing 13 is installed on a bearing base composed of the left insulating liner 2, the right insulating liner 3 and the permanent magnet 5 and is fixed through a cylindrical pin 8. The active and passive magnetic-gas hybrid bearing has the comprehensive characteristics of an active magnetic suspension bearing, a passive magnetic suspension bearing and a foil bearing; a magnetic fieldgenerated by a permanent magnet 8 replaces a static bias magnetic field of an electromagnet, so that the power consumption of a power amplifier is remarkably reduced; when a rotor rotates at a low speed, the permanent magnet 8 and a electromagnetic bearing provide load, and when the rotor rotates at a high speed, the foil bearing 13 and the permanent magnet 8 provide load, and the electromagneticbearing provides extra dynamic rigidity and damping to realize adjustment of bearing capacity of the bearing and improvement of stability.
Owner:HUNAN UNIV

Fluid end structure of reciprocating pump

The invention discloses a fluid end structure of a reciprocating pump. The fluid end structure of the reciprocating pump comprises a supporting main pump body, a valve cavity body fixedly connected with the supporting main pump body and a plunger piston. The plunger piston penetrates the supporting main pump body and stretches into a first cavity of valve set modules. The outer wall of the plungerpiston is sleeved with a main seal box assembly and an auxiliary seal box assembly. The main seal box assembly is arranged between the outer wall of the plunger piston and the supporting main pump body. The auxiliary seal box assembly is arranged between the outer wall of the plunger piston and the main seal box assembly. Lubricating grease is fed into the main seal box assembly and the auxiliaryseal box assembly of the fluid end structure, friction between the plunger piston and packing can be reduced, heat can be reduced, and the service life of the plunger piston and the service life of the packing can be prolonged. The valve set modules can be freely combined in different machine types to adapt to various media, high-pressure liquid conveying can be achieved, a valve core adopts nonmetal and metal combined type seal, nonmetal valve face contact is carried out before metal valve face contact is carried out, and the service life of a valve set is prolonged.
Owner:NINGBO QIANHU PETROLEUM EQUIP

Microwave ablation antenna

InactiveCN108652738AReduce feverFacilitate depositionSurgical needlesSurgical instruments using microwavesLongest DiameterEngineering
The invention provides a microwave ablation antenna. The antenna is provided with an antenna body, the antenna body comprises an inner conductor, and the outer side of the inner conductor is sequentially covered with a dielectric, an outer conductor and a shell; the antenna body extends in the axial direction, one end of the antenna body is used for being connected with a coaxial cable, the otherend of the antenna body is an antenna tail end, and the portions, at the antenna tail end, of the outer conductor and the inner conductor protrude out of the dielectric and are welded to each other; three gaps are girdled in the portion, close to the antenna tail end, of the outer conductor; the dielectric in the middle of the antenna body is axially and sequentially provided with a dielectric hollowed-out section and a thickened outer conductor extending inwards from the outer conductor. According to the microwave ablation antenna, the large ablation long diameter and ablation sphericity areobtained through a three gap joint, the ablation radius is increased through the cooperation with a pi matching joint, the comet tail effect can be well eliminated under the condition of not increasing the diameter of the antenna, the ablation sphericity is increased, the sphericity of an ablation area cannot be significantly reduced even if the microwave power is increased, and the large-range high-sphericity ablation area can be formed.
Owner:EAST CHINA UNIV OF SCI & TECH

Mobile film observing device for radiology department

The invention relates to a mobile radiology film viewing device, which belongs to the field of medical equipment. The mobile radiology film viewing device includes a base assembly, an adjustment device connected to the base assembly, a film viewing platform device connected to the adjustment device, and a film viewing light box connected to the film viewing platform device; the film viewing light box includes a light box body, and is arranged on The opening end face around the edge of the light box body, the clamping device set on the opening end face, the light-transmitting plate set on the center of the light box body, the LED light tube set on one side of the light-transmitting plate, the heat dissipation set on the side of the LED light tube The blower fan, the LED lamp control switch arranged on the top of the light box body, and the magnifying glass assembly arranged on one side of the top of the light box body. In the present invention, universal wheels are provided to facilitate the movement of the film viewing device, and a rotating disk is provided to facilitate the adjustment of the angle of the film viewing device. LED lamp tubes are provided, which consume less energy, do not flicker, and generate less heat. The temperature will not be too high, and a magnifying glass component is set to facilitate medical staff to view the film.
Owner:SHIYAN DEYUAN TECH DEV

Self-damping vibration-elimination magnetic levitation artificial heart blood pump rotor and preparation method thereof

The invention discloses a self-damping vibration elimination magnetic levitation artificial heart blood pump rotor and a preparation method thereof, which comprises a ring-shaped rotor body which is suspended at the middle of a blood pump through a magnetic levitation system, wherein the rotor body rotates around a rotating shaft which is positioned at the middle of the rotor body, the rotor body is internally provided with a hollow part, at least one damping block is placed in the hollow part, the damping block is connected with the rotor body through an elastic connector, and the hollow part is filled with damping liquid. The invention has the main beneficial effects that as the damping block and the damping liquid are arranged, damping can be provided for the swinging and the vibration of the rotor in the interior of the rotor, accordingly, the vibration of the blood pump rotor, caused by various imbalances, can be greatly reduced, the heat of the magnetic levitation system can be reduced, the scraping between the blood pump rotor and a stator can be reduced, the probability of failure of the magnetic levitation can be greatly reduced, and further, the reliability and the comfortableness of an artificial heart system can be improved.
Owner:苏州同心医疗科技股份有限公司

LED illumination control system and control method thereof

The invention relates to an LED illumination control system including a master controller and a sub-controller. The master controller includes a switch tube and a micro-controller circuit. The sub-controller includes a signal sampling circuit, a micro-controller circuit, a voltage-stabilizing circuit and a driving circuit. An output end of the switch tube of the master controller is connected serially between direct-current electricity transmission and signal lines through which direct current is transmitted to the sub-controller. A control end of the switch tube of the master controller is connected with a signal-output end of the micro-controller circuit of the master controller. A signal-input end of the signal-sampling circuit of the sub-controller is connected with a power input end of the voltage stabilizing circuit and the direct-current electricity transmission and signal lines and a signal-output end of the signal-sampling circuit of the sub-controller is connected with a signal-input end of the micro-controller circuit. The signal-output end of the micro-controller circuit is connected with a signal-input end of the driving circuit. A control output end of the driving circuit is connected with a load. The other end of the load is connected with the direct-current electricity transmission and signal lines. Through use of the two direct-current electricity transmission and signal lines, the LED illumination control system enables power supply and control of the sub-controller and the load of the sub-controller by the master controller to be realized and a problem, which exists in the prior art, that the LED illumination control system cannot be used directly on a two-wire illuminating line which is already well laid is solved.
Owner:金德奎

Low-noise low-heat water cooling electric reactor

The invention discloses a low-noise low-heat water cooling electric reactor which comprises a housing, a cooling pipe, a wire and a conduction magnetic core. The cooling pipe comprises a left cooling water pipe joint, a left insulating sheath, a cooling pipeline, a right insulating sheath and a right cooling water pipe joint which are sequentially connected; the left cooling water pipe joint is arranged on the housing by the left insulating sheath; the right left cooling water pipe joint is arranged on the housing by the right insulating sheath; the wire is wound on the conduction magnetic core and is fixedly arranged on the housing by a left connection terminal and a right connection terminal of the wire; and insulating resin is encapsulated in the housing. The low-noise low-heat water cooling electric reactor has a small size, a low heating value and a good cooling effect; the heating value is reduced by 50 percent; the service life of the electric reactor is doubled; the heat radiation for peripheral devices is low; and the insulating resin is encapsulated, so that the low-noise low-heat water cooling electric reactor has a good insulating effect and a high safety performance, the noise is reduced from 100 decibels to 30 decibels and the damage to a human body is reduced.
Owner:青岛同日机械电子有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products