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1897results about How to "Improve working condition" patented technology
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Home control protection system
InactiveUS20090207034A1Improve working conditionsStop workingEmergency protective arrangement detailsAlarmsProtection systemHome control
A home control protection system includes at least one surge protection strip having a plurality of power outlet receptacles, and a wall mountable central control unit that is in electrical communication with the at least one surge protection strip. The surge protection strip includes a replaceable surge protector module. The surge protection strip includes a circuit for detecting and counting the number of power surges which are shunted by the surge protector module, and compares the number of power surges with a predetermined threshold power surge number that corresponds to a predicted maximum number of power surges before failure of the surge protector module will occur.
Owner:VOXX INTERNATIONAL
Home control protection system
InactiveUS7961111B2Improve working conditionsStop workingEmergency protective arrangement detailsAlarmsComputer moduleProtection system
A home control protection system includes at least one surge protection strip having a plurality of power outlet receptacles, and a wall mountable central control unit that is in electrical communication with the at least one surge protection strip. The surge protection strip includes a replaceable surge protector module. The surge protection strip includes a circuit for detecting and counting the number of power surges which are shunted by the surge protector module, and compares the number of power surges with a predetermined threshold power surge number that corresponds to a predicted maximum number of power surges before failure of the surge protector module will occur.
Owner:VOXX INTERNATIONAL
Vehicle power management system
ActiveCN101159340AReduce consumptionNormal startBatteries circuit arrangementsElectric powerDriver/operatorSupply management
The invention relates to an automobile power supply management system. Firstly, by monitoring the state of the storage battery, the application state of an electrical apparatus used in an entire automobile is controlled, simultaneously the generation power and the output power of a generator is controlled, and the state information of the storage battery is provided to a driver, thereofore maximally optimizing the electric balance of the entire automobile; besides, the static current of the entire automobile is controlled, and the consumption of the electric quantity of the storage battery caused by the static current is reduced, ensuring the time for normally starting after the automobile stops, as well as optimizing the charging and discharging state of the storage battery and prolonging the service life of the storage battery.
Owner:CHERY AUTOMOBILE CO LTD
Air conditioner system energy saving optimization method based on load prediction
ActiveCN102980272AImprove working conditionSpace heating and ventilation safety systemsLighting and heating apparatusTime delaysEngineering
The invention discloses an air conditioner system energy saving optimization method based on load prediction. Historical data is utilized to predict the load of a future-moment air conditioner system; then, an energy consumption model of an air conditioner system is optimized by a particle algorithm to obtain an optimal operation parameter under the load condition; according to the real-time retardation time of the system, each parameter variable of the system is controlled in advance; a control time difference brought by the big time delay and big inertia of the air conditioner system is avoided; the amount of coldness supplied by the system and the amount of coldness used by the load are guaranteed to be same; and synchronism in time is synchronous realized. In addition, according to the air conditioner system energy saving optimization method based on load prediction, the load prediction and the optimization control of the air conditioner system can be carried out in real time, and therefore the air conditioner system is always under the optimal working state or the near-optimal working state to achieve the purpose of energy saving optimization.
Owner:ZHUHAI PILOT TECH
Shunting-type isothermal sulfur-tolerant conversion process and equipment thereof
ActiveCN101704513ASatisfy conversion rate requirementsMeet the requirements of adiabatic conversion control temperature riseHydrogenChemical industryShunt typesSulfur
The invention discloses a shunting-type isothermal sulfur-tolerant conversion process. The process comprises the following steps: shunting raw coal gas from exterior into at least two parts; leading overheat stream in the first part of the raw coal gas to increase the temperature to 200-300 DEG C; and then entering a first-stage conversion reaction step to carry out a conversion reaction and generate first conversion gas; and conveying the other part of the raw coal gas to next-stage conversion reaction step to carry out a conversion reaction. The catalyst bed of a shift converter has the advantages of stable temperature, simple control, convenient operation and low output CO content. The invention has the advantages of short conversion flows, few equipment, reduced resistance, great byproduct stream amount, high overheat temperature, stream pressure and heat recovery rate, and the like, thereby achieving the aims of reducing conversion stages, equipment number and resistance fall, decreasing investment, having great byproduct stream amount and high overheat temperature, stream pressure and heat recovery rate, reducing conversion stream consumption and outward wastewater discharge, protecting the environment and easily maximizing the device equipment. The invention also discloses shunting-type isothermal sulfur-tolerant conversion equipment used by the process.
Owner:SHANGHAI INT ENG CONSULTING
Monitoring system for electric automobile battery charging and replacing station
InactiveCN102315677ASolve the monitoring problem of compatible charging and swapping of large and small carsMeet the requirementsBatteries circuit arrangementsClosed circuit television systemsVideo monitoringDistribution power system
The invention relates to a monitoring system for an electric automobile battery charging and replacing station. The system comprises a superior system, an electricity distribution monitoring system, a charging monitoring system, a battery replacement monitoring system and a video monitoring system; a monitoring work station, a server, a printer, an electricity distribution system communication management machine and an electricity utilization information collecting terminal are connected with a network exchanger of the charging monitoring system through a local industrial Ethernet; a network exchanger of the electricity distribution monitoring system is connected with a communication gateway of the superior system through the local industrial Ethernet; an intelligent communication terminal of the battery replacement monitoring system is connected with the network exchanger of the charging monitoring system through the local industrial Ethernet; and a video server of the video monitoring system is connected with the communication gateway of the superior system through the local industrial Ethernet. The system can meet the requirement of electric energy complement of large commercial vehicles and small passenger vehicles and can realize omnibearing, effective and real-time monitoring on the battery charging and replacing of electric automobiles.
Owner:CHINA ELECTRIC POWER RES INST +1
Valve for switching double gas supplies in use for fuel gas heating apparatus
The present invention relates to a double gas source conversion valve for gas warmer. It includes the following several portions: valve core with knob, main valve body, nozzle assemblage and once gas inlet regulation cover. The main body of valve core can be turnably insert-mounted in the main valve body, its one end is passed through said main valve body and is equipped with a shifting fork, the nozzle assemblage is mounted on side surface of said main valve body, the high combustion valve gas nozzle and low combustion value gas nozzle are mounted in the gas outlet on the nozzle assemblage, the gas feeding end of said once gas inlet regulation cover is cover-mounted on the gas outlet, its another end is inserted into main combustor, on the described once gas inlet regulation cover a shifting bar is fixedly mounted, one end of said shifting bar is inserted into the shifting fork. Said invention can convertibly use two kinds of gas.
Owner:PROCOM ELECTRIC APPLIANCES SHANGHAI
Intelligent condensation-preventing environment regulating and controlling device
ActiveCN103760936AIncrease temperatureIncrease powerSimultaneous control of multiple variablesTemperature differenceChipset
The invention relates to an intelligent condensation-preventing environment regulating and controlling device. The device comprises a case, a semiconductor refrigeration chipset (7), a cold end radiator (14), a cold end condensation fan (5), a hot end and cold end heat insulation device (9), and a hot end cooling device. The semiconductor refrigeration chipset (7) is arranged in the case, and electrode plates at the two ends of the semiconductor refrigeration chipset produce a temperature difference to form a cold end and a hot end when the semiconductor refrigeration chipset is powered on; the cold end of the semiconductor refrigeration chipset is provided with the cold end radiator, the cold end condensation fan installed in the case rotates and produces negative air pressure to suck air and then blow the air to the cold end radiator; the hot end of the condensation semiconductor refrigeration chipset is provided with the hot end cooling device which discharges heat produced at the hot end of the semiconductor refrigeration chipset; the hot end and cold end heat insulation device separates the hot end and the cold end of the semiconductor refrigeration chipset in the case so as to facilitate dehumidification. Further, the invention further provides an intelligent condensation-preventing environment regulating and controlling system, air inside the controlled environment cannot meet the condition for producing condensation, and therefore the condensation is well prevented from being produced.
Owner:TIANJIN HAOYUAN HUINENG TECH CO LTD
Gasoline detergent with cleaning function and preparation method thereof
InactiveCN101962584AEasy to cleanBurn fullyLiquid carbonaceous fuelsFuel additivesCombustion chamberPreservative
The invention relates to a gasoline detergent with cleaning function and a preparation method thereof. Gasoline containing the detergent can clean deposits in an oil injection nozzle, an air inlet valve and a combustion chamber of a gasoline engine. The detergent comprises at least one type of high-activity polyetheramine, at least one type of high-activity polyisobutene amine, base oil serving as carrying oil, other solvent oil and functional agents such as an antioxidant, an anti-rusting agent, a preservative and a demulsifying agent. Specifically, the detergent comprises the following components in percentage by mass: 10 to 80 percent of polyetheramine, 5 to 20 percent of polyisobutene amine, 5 to 35 percent of carrying oil and 5 to 35 percent of solvent oil and other functional agents. After being added into commercially available motor gasoline according to the dosage of between 1,000 and 3,000 ppm, the detergent of the invention can suppress and clean the deposits of the oil injection nozzle, the air inlet valve and the combustion chamber of an oil-fired air inlet system of the gasoline engine. The motor gasoline containing the detergent of the invention can clean the deposits of the oil injection nozzle, the air inlet valve and the combustion chamber in which the deposits are generated.
Owner:深圳市超美化工科技有限公司
Cross-flow fan blades and air conditioning unit
PendingCN109538526AReduce volumeReduce the problem of inconvenient installationPump componentsLighting and heating apparatusEngineeringFan blade
The invention provides cross-flow fan blades and an air conditioning unit. The cross-flow fan blades comprise at least two stages of middle-section fan blades which are coaxially connected, all the middle-section fan blades are provided with first states and second states, wherein the first states are arranged side-by-side and the second states are overlapped or partially overlapped. According tothe cross-flow fan blades and the air conditioning unit, the middle-section fan blades are arranged to be of an overlapping structure, the size of the cross-flow fan blades can be reduced as much as possible, so that the installation is facilitated; and in a working state, all the middle-section fan blades can be restored to the side-by-side arrangement state under the action of rotation, the optimal working state is guaranteed, so that the problem that the cross-flow fan blades are not convenient to install due to too large size is effectively solved.
Owner:GREE ELECTRIC APPLIANCES INC
Coking inhibitor and preparation method and application thereof
InactiveCN101037618AImprove performanceImprove hydrogen supply capacityTreatment apparatus corrosion/fouling inhibitionHydrocarbon mixturesBoiling point
The invention discloses a agglomerating inhibiting agent, preparing method and application thereof. The agglomerating inhibiting agent is selected from one or more hydrogenizating upgrading products of hydrocarbon mixture of coal oil, ethylene tar oil, catalytic crackingre cycle stock, catalytic crackingre slurry oil, catalytic crackingre heavy oil, catalytic crackingre extract oil and coking hydrowax, which contain 65-100 wt% of cyclane and arene, boilingpoint is 150 DEG C to 500 DEG C. The agglomerating inhibiting agent is used for preventing, slowing and removing agglomerating of apparatus and pipilines in process of petroleum refining and petrochemical processing.
Owner:SINOPEC LUOYANG PETROCHEM ENG CORP
Reconfigurable wall climbing robot and collaborative obstacle-detouring method thereof
The invention discloses a reconfigurable wall climbing robot and a collaborative obstacle-detouring method thereof. The reconfigurable wall climbing robot comprises an adaptive seal skirt, a sealing lining, a centrifugal pump, a centrifugal pump motor, a centrifugal pump motor driver, a robot body, and the like, wherein the seal skirt is vertically fixed on the periphery of the lower bottom surface of the robot body; the robot body is provided with a through hole, the air inlet of the centrifugal pump is corresponding to the through hole of the robot body and fixedly arranged on the robot body, and an output shaft of the centrifugal pump motor is connected with the centrifugal pump; and the sealing lining is arranged on the lower bottom surface of the robot body and located between the through hole and the seal skirt. In the invention, each reconfigurable wall climbing robot is an independent individual, and can independently complete tasks such as reconnaissance and the like under the condition of no barrier; and when a certain wall climbing robot is required to detour an obstacle, two independent reconfigurable wall climbing robots can collaboratively complete an obstacle-detouring task through being combined to be a whole.
Owner:NANJING UNIV OF SCI & TECH
Grinding system intelligent optimization initialization method based on case ratiocination
InactiveCN1603986AImprove working conditionComputer controlDigital computer detailsAutomatic controlControl circuit
It is an intelligent optimization method based on case ration of mine grinding system and belongs to automatic control technique field, which comprises the following steps: overfall particle flexible measurement, aided variable selection, main variable selection, boundary condition identification, case expression, initial case acquiring, case ration, case storage and maintenance. This invention gives the optimization set values of control circuit of new mine given amount, overfall concentration, entrance water add amount according to the index of the mine particle concentration and makes mine grating system at optimized working state to get the qualified mine product.
Owner:NORTHEASTERN UNIV
Method and device for realizing intelligent self-adaption impedance matching adjustment
ActiveCN102122932AImprove working conditionFully consider the experienceMultiple-port networksImpedance matchingCharacteristic impedance
The invention discloses a method for realizing intelligent self-adaption impedance matching adjustment. The method comprises the following steps: choosing a mode of an impedance matching network by a mobile terminal according to the current state of the mobile terminal; sampling an actual impedance measured value of a sent signal; and performing the matching adjustment for the actual impedance measured value by the impedance matching network according to a preset target characteristic impedance value. The invention also discloses a device for realizing intelligent self-adaption impedance matching adjustment. By using the method and device provided by the invention, the mobile terminal is ensured to realize different impedance matching under various application environments, communication states and individualized requirements and so that the mobile terminal can be kept in an optimal working state all the time.
Owner:ZTE CORP
Remote monitoring maintenance method and system based on 3G and wind-solar complementary power supply technology
ActiveCN102081399ANo pollution in the processGuaranteed collection of dataTotal factory controlProgramme total factory controlDistributed structureNew energy
The invention discloses a remote monitoring maintenance method and a remote monitoring maintenance system based on 3G and wind-solar complementary power supply technology. The method comprises programmable logic controller (PLC) data acquisition and control, wind-solar complementary power supply, 3G wireless communication and remote monitoring maintenance, wherein wind-solar complementary new energy power supply technology, 3G network communication technology and automation control technology are organically combined to acquire data of temperature, pressure, flow, water level, water quality and other data of a pump station and monitor the pump station on site. The remote monitoring maintenance system and the PLC data acquisition and control system adopt a distributed structure; the remotemonitoring maintenance system monitors the data of each PLC data acquisition and control system on line in real time; a 3G wireless communication system provides smooth and rapid communication for the remote monitoring maintenance system and the PLC data acquisition and control system; and a wind-solar complementary power supply system provides power supply for the PLC data acquisition and control system. The method and the system realize wireless energy of the remote pump station and data transmission operation.
Owner:SHENZHEN FUTURELOOKS AUTOMATION SYST
Pressure-releasing structure of basement anti-floating plate and construction method thereof
ActiveCN103147464ASolving Buoyancy ProblemsSolve the problem of water collectionProtective foundationStructure of the EarthBuoyancy
The invention discloses a pressure-releasing structure of a basement anti-floating plate and a construction method thereof. The pressure-releasing structure comprises a cushion layer and a basement bottom plate on the cushion layer, wherein water-collecting pits are formed in the cushion layer and the basement bottom plate; a layer of hardpan is paved below the cushion layer; filtering layers are paved around the water-collecting pits; flow-guide pipes are paved in the hardpan and are gathered in the filtering layers; flow-leading pipes are arranged on the side walls of the water-collecting pits; and the water-collecting pits are communicated with the filtering layers through the flow-guide pipes. Water generating floatation outside a basement is led into the basement, so that the floatation is reduced. The hardpan is paved below the cushion layer, so that the problem that water outside foundation pits of the basement is gathered is solved, the underground water is collected through a flow-guide pipe arranged in the hardpan, the flow-leading pipes change the underground water into gravity water in the basement, and the problem of the floatation of the underground water is completely solved from the construction starting stage of a building.
Owner:四川省建研万瑞科技有限公司
Three-mode power transmission device for hybrid vehicle
InactiveCN102152734ALower performance requirementsImprove working conditionBraking element arrangementsGas pressure propulsion mountingElectricityElectric machine
The invention relates to a three-mode mechanical-electric compound speed changing device. The device is provided with three planetary gear groups, two power-driven / electricity-generating machines and a plurality of torque transmission mechanisms. Two motors with a 'power-driven / electricity-generating' mode are arranged on the device; a system output rotation speed can be continuously changed in three sections through the matching between continuous switching of 'power-driven / electricity-generating' states of the two motors and a mechanical speed changing device, on the premise that a system input rotation speed is not changed; and then a stepless speed changing device function is realized. During a complete working period of mechanical-electric compound drive, the two motors pass through three sections of working states respectively, so a very wide continuous stepless speed-regulating range of a system is converted into three-time recirculation of the motor rotation speed in a limited range, and the requirements on the rotation speed and the power of the motors are greatly reduced. At the same time, the device has very wide continuous stepless speed-regulating ability, so an engine can be stabilized in one rotation speed state all the time theoretically and the working state of the engine can be well optimized. The device is particularly applicable to hybrid electric vehicles with large tonnage and heavy load.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
Air door closing in-place detecting device and refrigerating plant
ActiveCN103900342AImprove the detection rateImprove working conditionLighting and heating apparatusCooling fluid circulationControl signalEngineering
The invention provides an air door closing in-place detecting device and a refrigerating plant. The air door closing in-place detecting device comprises a detecting element, a detecting circuit and a controlling element. The detecting element is mounted on an air door and is used for detecting the air door and determining whether the air door is closed in place or not; the detecting circuit is connected with the detecting element and transmits control signals according to detection results of the detecting element; the controlling element receives the control signals outputted by the detecting circuit and controls actions of the air door according to the received control signals. The air door closing in-place detecting device and the refrigerating plant have the advantages that the air door closing in-place detecting device is provided with the detecting element, the detecting circuit and the controlling element, so that the detection rate of anomaly of the air door can be effectively increased, refrigerating equipment such as a refrigerator can be in the designed allowable optimal working state, and the reliability of a product can be effectively improved.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD
Battery state detecting method, radio frequency identification device and battery detecting system
ActiveCN103336245AImprove working conditionExtended service lifeElectrical testingSensing record carriersElectrical batteryRadio frequency
The invention discloses a battery state detecting method, a radio frequency identification device and a battery detecting system, relates to the field of battery power supplies, and solves the problem that the battery state cannot be mastered in the prior art, and achieves intelligentized management control to the batteries. The battery state detecting method provided by the embodiment of the invention comprises the followings: recognizing battery specification; controlling battery discharging; detecting discharging data during the battery discharging process; obtaining battery capacity coefficient according to discharging data and pre-arranged parameter tables of batteries with different specifications; calculating battery state data according to discharging data and the battery capacity coefficient.
Owner:HUAWEI DIGITAL POWER TECH CO LTD
Device and method for detecting piston ring and piston rod sealing performance
InactiveCN103162918AImprove working conditionDetection of fluid at leakage pointMeasurement of fluid loss/gain ratePiston ringReciprocating motion
The invention belongs to the technical field of piston sealing detection devices, in particular relates to a device and a method for detecting the piston ring and piston rod sealing performance. At present, the device for detecting the piston ring and piston rod sealing performance is not provided, so that using requirements on the piston ring and piston rod sealing performance cannot be met. According to the device, a crankshaft connection rod mechanism is driven by a motor to drive a piston to do reciprocating motion, the working process of the motor is simulated, the piston ring and piston rod sealing performance is detected by using easily leaked helium through a helium spectrum leak detector under the condition that the working state of an experimental table substantially accords with the actual condition of the motor, and shortcomings on design are found out, so that the motor has the optimal working state.
Owner:XIAN TECHNOLOGICAL UNIV
Online vibration control tilting-pad radial sliding bearing device
InactiveCN103089810AImprove working conditionSelect Radial Displacement AccuracySliding contact bearingsVibration controlRadial position
Owner:XI AN JIAOTONG UNIV
Energy saving system of networked measuring and controlling pumping units
InactiveCN1916413AImprove working conditionImprove management levelPump controlPositive-displacement liquid enginesDisplay deviceControl theory
A network detecting and controlling system of pumping unit is featured as dynamically collecting pressure and displacement on-site data of pumping unit by transducer then sending said data to on-site controller, using driving controller to make motor of pumping unit regulate speed, measuring parameter of power supply subsystem by relay protective unit to judge out overpressure and overcurrent protection of motor and controller on pumping unit, carrying out remote communication with the second radio communication unit (RCU) in remote monitor and information management system through the first RCU, connecting the second RCU to control center being used to contact with mobilephone through GSM.
Owner:CHANGQING GASOLINEEUM EXPLORATION BUREAU +1
Indoor unmanned aerial vehicle positioning system
ActiveCN104035091AIncrease investmentGet to work quicklyPosition fixationNavigation instrumentsThree-dimensional spaceGround station
The invention discloses an indoor unmanned aerial vehicle positioning system. The indoor unmanned aerial vehicle positioning system comprises an unmanned aerial vehicle body, a marker, a ground station and a three-dimensional space constructing system; the unmanned aerial vehicle body comprises a control box and an information receiving device; the marker is placed in a room, when the unmanned aerial vehicle body flies, the information receiving device identifies marker information and transmits to the control box, and the control box calculates the indoor three-dimensional space coordinate information of the unmanned aerial vehicle body through combining with aircraft navigation information. By means of the three-dimensional space constructing system, the indoor three-dimensional space data is stored in the ground station, and the ground station is capable of displaying the concrete position of the unmanned aerial vehicle in the room. The indoor unmanned aerial vehicle positioning system is capable of positioning the unmanned aerial vehicle in a room in which a GPS signal is easy to be shielded, enables the unmanned aerial vehicle performance to be improved and is convenient to use the unmanned aerial vehicle in different environments.
Owner:DIGITAL EAGLE TECH DEV YANCHENG CO LTD
Electric vehicle battery management system and method
ActiveCN106671785AFast and easy to control temperature adjustmentEasy to useElectric devicesVehicular energy storageTransceiverAutomotive battery
The invention discloses an electric vehicle battery management system and method. The system comprises a pipe network, a vehicular control terminal and a cloud computing processing platform, the pipe network comprises air outlet pipes, the vehicular control terminal comprises a main controller, a power supply, a movable transceiver, a vehicular computer, a display, a relay, a current sensor and a slave control unit, and an output end of the vehicular computer is connected with a vehicular air-conditioning control module and an alarm. The method includes the steps: acquiring and uploading electric vehicle battery current data; judging whether an electric vehicle battery is short-circuited or not; calculating the discharged electric quantity of the electric vehicle battery; acquiring the voltage and temperature data of each single battery; regulating the voltage value and the temperature value of each single battery and unloading the values in real time; estimating an SOC (system on chip) value of the single battery; calculating the remaining electric quantity of the electric vehicle battery and displaying and outputting the SOC value and the remaining electric quantity. The optimal working state of the electric vehicle battery is guaranteed, the service life of the electric vehicle battery is prolonged, and safety accidents are prevented.
Owner:XIAN UNIV OF SCI & TECH
Air conditioning unit and method for detecting operation state thereof
InactiveCN101813358ATimely maintenanceImprove working conditionSpace heating and ventilation safety systemsSpace heating and ventilation control systemsDisplay deviceEngineering
The invention relates to an air conditioning unit and a method for detecting the operation state thereof. A refrigerant outlet of a compressor and a condenser are respectively provided with a temperature sensor; the measured refrigerant discharge temperature, the condenser temperature and the compressor input power are respectively connected with a difference comparator; and each measured numerical value is compared with the standard value by the difference comparator so as to judge the working conditions of parts such as the condenser, the compressor and the like of the air conditioning unit, and then the working conditions are displayed to users directly by a display to enable the users to learn about the problems in the air conditioning unit intuitively and perform maintenance and partreplacement on the air conditioning unit timely according to the prompt of the display, thus ensuring the air conditioning unit to be a good working state, maintaining the working efficiency of the air conditioning unit in refrigeration and playing a role in saving energy source.
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
Light-emitting diode light source driving power supply
InactiveCN102014559ALow total harmonicImprove power factorElectric light circuit arrangementPower factorEngineering
The invention discloses a light-emitting diode light source driving power supply, comprising an electro magnetic input suppression circuit, an input rectification filter circuit, a power factor correction and direct current switching circuit, an IC (integrated circuit) auxiliary power supply circuit, an output rectification filtering unit and a constant voltage and constant current output feedback control circuit, wherein the electro magnetic input suppression circuit is composed of an electrolytic condenser CX1, an inductor L1, an electrolytic condenser CX2 and an inductor L2, and an output electric signal after power grid clutter filtering is connected to the input rectification filter circuit to be rectified and to be filtered by a high frequency filter capacitor C1; and direct current after rectification filtering is connected to an isolation transformer, then the direct current is connected to a power switch tube V1 in the power factor correction and direct current switching circuit and is also connected to the IC auxiliary power supply circuit, and then the direct current is coupled to a secondary line set by virtue of the isolation transformer to be subject to rectification filtering and finally is connected to a power grid power factor correction chip IC1 in the power factor correction and direct current switching circuit, so as to supply power to the IC1. The invention has good load adaptability; the transformation efficiency is high; and an LED driving power supply with constant current and output voltage regulated along with load change is realized.
Owner:NINGBO LONGYUAN ILLUMINATE APPLIANCE
Heat resistant anticorrosive composite polyphenylene sulfide epoxy paint and its prepn
InactiveCN1887996AImprove physicsGood chemical propertiesInorganic pigment treatmentAnti-corrosive paintsEpoxyHigh intensity
The present invention discloses one kind of heat resistant anticorrosive composite polyphenylene sulfide epoxy paint and its preparation process. The anticorrosive paint consists of primer, finishing paint and intercoat paint. The primer consists of polyphenylene sulfide, epoxy resin, glass scale and cyanamide dimmer. The finishing paint consists of polyphenylene sulfide, epoxy resin, silicon carbide, 4, 4'-diamino diphenyl sulphone and cyanamide dimmer. The intercoat paint consists of polyphenylene sulfide, epoxy resin, silicon carbide, glass scale, dihydrazide sebacate and 4, 4'-diamino diphenyl sulphone. The anticorrosive paint produces no sag, and can form homogeneous and smooth coating with excellent physical and chemical performance, high heat resistance, high corrosion resistance, high impact strength, and high insulating performance.
Owner:NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
Shearing type MR fluid shock absorber
InactiveCN101235864AImprove working conditionThe damping coefficient can be adjusted in real timeNon-rotating vibration suppressionDamping factorEngineering
The invention provides a shear mode magneto-rheological fluid damper which is capable of achieving automatic reset, and comprises a seat board 1, a seat board 2 and a magneto-rheological fluid damper, wherein the magneto-rheological fluid damper is arranged between the seat board 1and the seat board 2, a rubber damping device is arranged between the board plate 1 and the seat board 2, thereby when the seat board 1 and the seat board 2 are arranged on a damping object, the magneto-rheological fluid damper provides a damping effect of real-time adjustable damping coefficient and accurate control for the damping object, the rubber damping device besides provides an additional non-main damping action, the more important is that the magneto-rheological fluid damper is recovered to an initial state, and the whole shear mode magneto-rheological fluid damper is maintained in an ideal working state.
Owner:HUAQIAO UNIVERSITY
Wide-gain control method for LLC resonant converter and resonant converter
ActiveCN110601543AImprove working conditionAvoid mutationEfficient power electronics conversionAc-dc conversionPhase shift controlPhase shifted
The invention discloses a wide-gain control method for an LLC resonant converter and the resonant converter. The method comprises the steps of: employing a full-bridge LLC PFM control mode at a low-voltage segment of an input voltage range, and changing an output voltage gain through changing a switching frequency; adopting a full-bridge LLC PWM phase shift control mode in a medium-voltage sectionof an input voltage range, wherein in the whole medium-voltage section range, the switching frequency fsw is equal to the resonant frequency fr0, and the output voltage gain is changed by changing the phase shift angle [theta]; in a high-voltage section of an input voltage range, adopting a full-bridge LLC variable duty ratio control mode, wherein in the whole high-voltage section range, the switching frequency fsw is equal to the resonant frequency fr0, and the output voltage gain is changed by changing the duty ratio of a primary side first switching tube S1. According to the invention, smooth switching between modes is achieved, the working efficiency, the gain range and the power density of the converter are improved, and the requirements of a wide-voltage gain range conversion occasion are met.
Owner:MORNSUN GUANGZHOU SCI & TECH
Air conditioner with automatic indoor unit fan cleaning function
InactiveCN101498481AImprove working conditionReduce loadLighting and heating apparatusSpace heating and ventilation detailsTransverse planeFresh air
The invention provides an air conditioner which has the function of automatically cleaning an indoor unit fan and is capable of solving problems caused by dust accumulation of a fan in the prior art. The air conditioner comprises an indoor unit, an indoor unit base and a fan and is characterized in that the indoor unit base is provided with a cleaning brush for cleaning the fan and a driving motor for driving the cleaning brush, and the cleaning brush is connected with the driving motor. When the tangential fan needs cleaning, a transverse air plate is closed, a fresh air exchanging fan is started, and the air conditioner operates in an air supply mode. When cleaning brush contact with the fan, the dust on the fan is cleared by the cleaning bush operating for a certain time.
Owner:HISENSE (SHANDONG) AIR CONDITIONING CO LTD
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