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176results about How to "Reduced maintenance needs" patented technology
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Air conditioning and heating environmental control sensing system
InactiveUS6196468B1Avoid deactivationInhibit wearTemperature control using analogue comparing deviceSpace heating and ventilation safety systemsStopwatchThermostat
A device for controlling an HVAC system in which opening a door or window for more than a shutdown delay period causes the fan and compressor to be deactivated, but opening and closing the door or window for less than the shutdown delay period does not affect the fan and compressor. Reactivation of the compressor is delayed for a startup delay, in order to avoid overcycling of the compressor and the additional wear and tear and maintenance that would be caused thereby. Preferably, the door / window sensors are wireless for ease of installation and maintenance. Optionally, an occupancy sensor and occupancy timer are provided to turn off the system if the room is unoccupied for an unoccupied delay time. Optionally, a secondary thermostat with energy saving settings is provided so that if the room is unoccupied for the occupancy delay, then instead of being shut off, the HVAC system will be operated at energy saving settings.
Owner:YOUNG DENNIS GUY
Aqueous dispersions of hydrophobic material
InactiveUS6165259AImprove stabilityLow viscosityNatural cellulose pulp/paperSpecial paperHydrophobeOrganic compound
The invention relates to an aqueous dispersion containing a dispersant and a disperse phase containing a hydrophobic material, the dispersant comprising an anionic compound having a molecular weight less than 50,000 and being selected from the group consisting of carbon-containing compounds and silicon-containing compounds, and a cationic organic compound having a molecular weight less than 50,000. The invention further relates to the preparation and use of the dispersion in the production of paper. The invention also relates to a substantially water-free composition containing a hydrophobic material, an anionic compound having a molecular weight less than 50,000 and being selected from carbon-containing compounds and silicon-containing compounds, and a cationic organic compound having a molecular weight less than 50,000, as well as it use in the preparation of an aqueous dispersion.
Owner:AKZO NOBEL NV
Networked Motorized Drive Roller Conveyor
InactiveUS20120024669A1Low costShorten the timeConveyorsControl devices for conveyorsLeading edgeEngineering
A motorized drive roller conveyor includes an upstream zone and a downstream zone, with each zone having a drive roller, an idler roller that is driven by the drive roller, and a sensor. The upstream zone and the downstream zone are controlled by a card, which measures a gap between a first item on the conveyor and a second item on the conveyor by beginning a counter when a trailing edge of the first item passes the sensor of the upstream zone and stopping the counter when a leading edge of the second item passes the sensor of the upstream zone to generate a counter value. If the first item is stopped in the downstream zone, the card of the upstream zone causes the drive roller of the upstream zone to advance the second item into the downstream zone for a distance derived from the counter value before stopping the transportation of the second item.
Owner:DANELSKI DARIN L +1
Ocean wave power plant
ActiveUS20130127168A1Reduced maintenance needsReduce lossesEngine fuctionsMachines/enginesPower stationSea waves
An ocean wave power plant provided for by respective interconnected functional units comprising a support structure (1a, 1b) is disclosed. The support structure (1a, 1b) is terminated in a lower end with a fastening bracket (9c) which can be anchored in a single point to a mass (9e) when deployed in the sea. A submergible uplift floating body (2) is providing buoyancy for the ocean wave power plant when deployed in the sea. The a uplift floating body (2) is attached to the support structure (1a, 1b), an electric power generating subsystem (A) supported by a platform (8) is terminating the support structure (1a, 1b) in an upper end of the support structure. A transmission member (4, 4a, 18) is attached in one end to a floating body (3) and in another end to the power generating subsystem (A) transferring wave motion from the floating body (3) to the power generating subsystem (A).
Owner:DRAGIC MILE
Cellular communications system with sectorization
InactiveUSRE40564E1Improve coverageIncrease capacitySubstation equipmentRadio/inductive link selection arrangementsTelephone exchangeCellular communication systems
A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.
Owner:COMMSCOPE TECH LLC
Ultrasonic horn assembly stack component connector
InactiveUS6841921B2Reduced maintenance needsEfficient transferPiezoelectric/electrostriction/magnetostriction machinesLaminationBiomedical engineeringUltrasound
An ultrasonic horn assembly for applying ultrasonic energy at an operating location which assembly includes a connector between horn assembly components which provides uniform clamping pressure between transfer faces of the components.
Owner:DUKANE IAS LLC
Method and system for process controlling of plants in an opc-ua based machine-to-machine network
ActiveUS20180088548A1Simple planEasy maintenanceTechnology managementBoiler controlBiotechnologyControl engineering
A method for process controlling of plants and plant control systems in an OPC UA based Machine-to-Machine (M2M) network is provided. A plant associated with the plant control system a plurality of interlocked elements of one or more operational units of the plant. The operation of an operational unit is controlled by the plant control system using the elements interlocked to the plant control system. The plant control system is accessible by an independent process control system in the Machine-to-Machine (M2M) network via one or more network interfaces, and wherein messages containing signaling data and steering commands are transmitted between the process control system and the plant control system.
Owner:BUEHLER AG
Method and apparatus for forming fused silica by combustion of liquid reactants
InactiveUS6565823B1High concentricityPrevents burner buildupSilicaSpray nozzlesCombustorDecomposition
The present invention is directed to a method for making fused silica glass. A liquid, preferably halide-free, silicon-containing compound capable of being converted by thermal oxidative decomposition to SiO2 is provided and introduced directly into the flame of a combustion burner, thereby forming finely divided amorphous soot. The amorphous soot is deposited on a receptor surface where, either substantially simultaneously with or subsequently to its deposition, the soot is consolidated into a body of fused silica glass. The invention further relates to an apparatus for forming fused silica from liquid, preferably halide-free, silicon-containing reactants which includes: a combustion burner which, in operation, generates a flame; an injector for supplying a liquid silicon-containing compound to the flame to convert the compound by thermal oxidative decomposition to a finely divided amorphous soot; and a receptor surface on which the soot is deposited.
Owner:CORNING INC
Laser measurement device and method
ActiveUS7839491B2Reduced maintenance needsReduce disadvantagesOptical rangefindersElectromagnetic wave reradiationMeasurement deviceConical scanning
A measurement device, such as a laser radar, is described that comprises a transmitter portion for transmitting radiation to a remote probe volume, a receiver portion for detecting radiation returned from the remote probe volume and a processor for analysing the detected return radiation. The device is suitable for transmitting and receiving radiation through a window portion having associated window cleaning apparatus (e.g. wiper 62) for cleaning said window portion in response to a cleaning activation signal. The processor is arranged to generate a cleaning activation signal for activating window cleaning apparatus when the properties of said detected return radiation are indicative of a reduction in transmission through at least part of said window portion. In one embodiment, a conically scanned lidar is described that generates a cleaning activation signal when the power of detected return radiation varies as a function of the angle of transmission of radiation from the device.
Owner:QINETIQ LTD
Wind Park With Real Time Wind Speed Measurements
InactiveUS20140336833A1Reduce maintenanceReduce needLevel controlWind motor controlWind forceElectric power
A system for producing electrical power based on wind energy is capable of predicting its power output. The system includes a set of wind turbine units, a first plurality of sensors each adapted to sense at least one wind characteristic at some of the wind turbine units, and a second plurality of sensors remotely located. At least one wind characteristic is estimated at the wind turbines not having one of the first plurality of sensors based on sensing by the first plurality of sensors and an estimate of changes in wind characteristic at wind turbine units caused by presence of other wind turbine units. The magnitude of electrical power production by the set of wind turbine units at at least one predefined point in time in the future is predicted based on the estimated wind characteristics and sensed wind characteristics.
Owner:ABB POWER GRIDS SWITZERLAND AG
Grass-free feed for sheep
ActiveCN104000017AReduced maintenance needsIncrease feed intakeFood processingAnimal feeding stuffRumenLysine
The invention discloses a grass-free feed for sheep. The feed comprises concentrated material which comprises the following substances in parts by weight: 400-800 parts of corn flour, 50-200 parts of bean pulp, 50-180 parts of distillers dried grains with soluble (DDGS) feed, 5-20 parts of mountain flour, 10-20 parts of salt, 5-20 parts of baking soda, 0.1-1.0 part of cellulase, 0.1-1.0 part of multivitamin specially used for the sheep, 0.1-2 parts of trace elements specially used for the sheep, 0.001-0.005 part of monemin, 0.1-2 parts of rumen protected methionine, 0.5-3 parts of rumen protected lysine, 0.1-2 parts of rumen protected choline and 1-10 parts of fulvic acid; the concentrated material is prepared by evenly mixing the substances. The grass-free feed for the sheep is high in absorptivity, and is capable of effectively increasing the growth rate of the sheep, thus shortening the growth cycle and increasing the income of farmers.
Owner:石家庄渴望饲料有限公司
Method for measuring temperature, molecular number density, and/or pressure of a gaseous compound from a thermal device, and a thermal system
ActiveUS20150144297A1Reduced maintenance needsRadiation pyrometryAir-treating devicesDifferential absorptionPulse sequence
A method for measuring, from a thermal device, temperature, molecular number density, and / or pressure of a gaseous compound as function of distance, the gaseous compound absorbing at least some light. The method comprises generating, for a first wavelength band and a second wavelength band, a pulse sequence comprising a light pulse or light pulses, guiding the pulse sequence into the thermal device, and measuring, as function of time, the intensity of the scattered light at the first wavelength band and at the second wavelength band. The method further comprises determining information indicative of the differential absorption between the two wavelengths bands using measured intensities and determining the temperature, the molecular number density, and / or the pressure of the gaseous compound using the information indicative of the differential absorption between the two wavelengths bands. A thermal system arranged to carry out the method.
Owner:VALMET TECH OY
Cellular communications system with sectorization
InactiveUSRE45321E1Expand coverageIncrease capacityInterconnection arrangementsSubstation equipmentMultiplexingCommunications system
Owner:COMMSCOPE TECH LLC
Cellular communications system with sectorization
InactiveUSRE43964E1Expand coverageIncrease capacitySubstation equipmentElectromagnetic network arrangementsMultiplexingCommunications system
A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit which is connected to a mobile telecommunications switching office. Separate digitized streams representative of telephone signals received from the mobile telecommunications switching office are generated corresponding to the microcell antenna units and the separate digitized streams are multiplexed and transmitted to the remote unit. The remote unit demultiplexes the multiplexed digitized streams into the separate digitized streams corresponding to the microcell antenna units and the separate digitized streams are converted to RF signals for coverage of a particular sector by the corresponding microcell antenna unit. Separate digitized streams are separately generated for each microcell antenna unit representative of RF signals received at the microcell antenna unit for a particular sector. The separately generated digitized streams are multiplexed at the remote unit and transmitted to the sectorized base station unit. At the sectorized base station unit, the multiplexed digitized streams are demultiplexed into the separate digitized streams corresponding to microcell antenna units and the separate digitized streams are converted to RF signals for provision to the mobile telecommunications switching office. Diversity at the remote units is also provided.
Owner:COMMSCOPE TECH LLC
Corn milling process
InactiveUS6953165B1Reduce processingReduction and elimination of flowGrain millingEngineeringContamination
The present invention is a short flow milling process wherein finished product is rapidly isolated and removed from the milling process flow regime at early stages. The minimization of handling and the minimization or elimination of intermixing streams of various size gradations prevents size contamination that otherwise necessitates further sifting. Component parts are eliminated along with the accompanying handling and transfer equipment to create a compact and efficient milling regime. The size reductions enable the invention to be practiced in a mobile form. Therefore, the present invention relates also to a method for providing a mobile mill process.
Owner:THE QUAKER OATS CO
Twin-wire belt press
InactiveUS7051882B2Simpler and small and cheap and reliableAvoid rewettingMachine wet endPress sectionFiberEngineering
A twin-wire belt press is disclosed for dewatering a fiber suspension and forming a continuous web of the fiber suspension. The twin wire belt includes a plurality of upper and lower rolls, a perforated roll and endless upper and lower wire belts. Dewatering tables are used to support the endless upper and lower wire belts and form a wedge-shaped pressure space between the endless upper and lower wire belts for initially pressing and dewatering the fiber suspension and forming a web therebetween. Roll members, including at least two press rolls which form press roll nips with the perforated roll and another roll, press and dewater the web between the endless upper and lower wire belts.
Owner:VALMET TECH INC
System and method for determining density of a medium in a tank
ActiveUS20150177163A1Negligible effectLow costResistance/reactance/impedenceMaterial analysis using microwave meansTransceiverResonance
A system and method for determining a density of a non-conducting medium in a tank is disclosed where the relationship between a dielectric constant and a density of the medium is known. The system comprises a transceiver, and a waveguide, the waveguide extends towards and into the medium. The system further comprises a first microwave resonator located along the waveguide. The first microwave resonator has a resonance frequency, which depends on a dielectric constant of a medium surrounding the resonator according to a known relationship, and is arranged to reflect a portion in the frequency domain of a signal being guided along the waveguide. The system further comprises processing circuitry connected to the transceiver and configured to determine the resonance frequency based on a received reflected signal, and to determine a density of the medium at the location of the first microwave resonator based on the resonance frequency.
Owner:ROSEMOUNT TANK RADAR
Method and apparatus for predicting maintenance needs of a pump based at least partly on pump performance analysis
InactiveUS20120141301A1Improve pumping efficiencyReduce power consumptionSpecific fluid pumpsFluid parameterMotor driveComputer module
A signal processor is provided comprising one or more signal processor modules configured to: compare signaling containing information about historical data related to the performance of a pump; and provide corresponding signaling containing information about predicted maintenance needs of the pump on a real time basis based at least partly on the signaling compared containing information about the historical data related to the performance of the pump. The one or more signal processor modules may be configured to compare over time the hydraulic power generated by the pump and electric power consumed by a motor driving the pump, including tracking a ratio of hydraulic to electric power. The one or more signal processor modules may be configured to predict maintenance needs based on an algorithm that takes into account a trade-off between the cost of power consumed by a motor driving the pump and the cost associated with the pump maintenance in order to substantially minimize the total cost of operating the pump.
Owner:CIDRA CORP SERVICES
Air filter
InactiveUS20100311316A1Avoid passingReduced maintenance needsCombination devicesDispersed particle filtrationBristleAir filter
An air filter (111) comprising a duct (118, 120) forming a passageway extending between an inlet (116) and an outlet (113) of the air filter, the duct comprising bristles (310) extending from a wall of the duct across at least a portion of the passageway so as to remov entrained particles from air passing through the duct.
Owner:4ENERGY LTD
Plug valve and stem sealing assembly
ActiveUS20130270472A1Prevent leakageImprove reliabilitySpindle sealingsPlug valvesEngineeringVALVE PORT
An improved and more robust plug valve and stem sealing assembly capable of preventing leakage under demanding environmental and operating conditions while also improving the reliability of the valve seal. The valve includes a body, a flow-element, a bonnet and a self-adjusting stem sealing assembly. The body has a first port and a second port with a passage configured to flow a media extending between said first port and said second port. The flow-element is positioned between the first and second port and has a stem configured to actuate the flow-element between a closed position and an open position. The bonnet may be secured to the valve body and configured to secure the flow-element and stem sealing assembly in position. The self-adjusting stem sealing assembly is positioned adjacent to the stem and is configured to prevent media leakage from the valve.
Owner:AEGIS FLOW TECH L L C
Polymeric concrete for wind generator towers or other large structural applicatons
InactiveUS20090313913A1Reduces maintenance needProduction cost be reduceEngine manufactureFinal product manufactureCorrosionWind power generator
The present invention relates to towers for wind generators or other large structural applications and uses a new construction concept, based on polymeric concrete. Polymeric concrete is composed of thermosetting resin and aggregates such as sand or gravel. Polymeric concrete has low maintenance costs and exceptional high resistance to corrosion, thus justifying its main usage in non-structural applications. Additionally, polymeric concrete has been used as mortar in the rehabilitation of civil structures, especially retrofitting of bridges and heritage buildings. Its advantages for these applications are the adherence to the traditional materials, higher compressive strength than traditional concrete and low specific weight. The tower (1), according to the invention, is built of two or more superimposed ring sections (2) in conical or cylindrical shape, each ring (2) being built of one or more shell segments and the said segments being fixed by means of mechanical and / or chemical couplings, and being made of prefabricated polymeric concrete.
Owner:HYTOWER LDA
Interactive alcometry
ActiveCN101631497APrevent agingLow costDiagnostic recording/measuringColor/spectral properties measurementsObservational errorData treatment
The invention relates to method and apparatus for the determination of alcohol concentration of expired air. By visualising current or accumulated measuring value and error in real time during ongoing measurement, interactive control of alcohol determination is enabled with respect to accuracy and time lapse. Preferably the measurement is performed without contact with compensation for the dilution of the breath sample, which is performed by simultaneous measurement of temperature, concentration of water vapour or carbon dioxide. The method is divided into a stepwise procedure based on the dependence of the measuring error on the dilution of the expired air, and accumulated time, both being possible to influence by the test person or operator. Special advantages are being obtained at measurements relative to a concentration limit. The alcohol determination is preferably performed by means of absorption spectroscopy within the infrared wavelength range. The apparatus according to the invention includes sensors for the abovementioned entities, an electronic unit for signal and data processing, a presentation unit, and is embedded in a compact housing for handheld use or integration. The response time of the sensors should not exceed 0,5 seconds in order to fulfil the requirement of real time operation. The housing is controllably openable at measurement, and includes a measuring cell illuminated with collimated infrared radiation and means for active air flow.
Owner:HOK INSTR
Steam dryer
ActiveCN101881552AEasy accessReduced maintenance needsDrying solid materials with heatDrying machines with non-progressive movementsLiquid stateEngineering
The invention concerns a steam dryer for evaporating of water and / or other liquid from wet materials or evaporating of materials in a liquid state. The dryer comprises a cylindrical rotatable drum having a feed end and a discharge end; a plurality of steam pipe elements inserted in the drum, wherein each steam pipe element comprises axial pipes parallel to a longitudinal direction of the drum and interconnected by transverse intermediate pipes, and the steam pipe elements are rotatable with the drum; a stationary end chamber and a steam distributor manifold arranged at the discharge end area of the drum; conveyance means disposed at the feed end of the drum for supplying the wet materials or the materials in a liquid state into the steam dryer for evaporating. The stationary end chamber is arranged at the discharge end area of the drum in the axial direction between the discharge end plate and the feed end plate such that the discharge end plate is situated outside of the discharge end chamber. The discharge end chamber surrounds a portion of the drum and it has a lower opening to discharge dried material or remaining liquid and an upper opening to discharge vapour from the drum. The steam distributor manifold is arranged at the discharge end of the drum outside of the discharge end plate.
Owner:KUMERA
Fuel cell system, method for operating a fuel cell and vehicle with such a fuel cell system
InactiveCN104282926ASave installation spaceEliminate weightReactant parameters controlFire rescueLiquid waterNuclear engineering
A fuel cell system (2) comprises an air inlet (26), a hydrogen inlet (14), an inert gas outlet (27), a water outlet (38), an electrical power outlet (32), at least one low temperature fuel cell (4) and at least one air separator (16). The air separator (16) is positioned between the air inlet (26) and a cathode of the at least one fuel cell (4) and is adapted for separating oxygen from the air and feeding the oxygen to a cathode of the at least one fuel cell (4). The fuel cell (4) is capable of delivering liquid water as a by-product due to the use of substantially pure oxygen and hydrogen in a low temperature operation, such that extraction and condensation requiring cooling capacity is not necessary. The fuel cell system (2) is therefore efficient and compact.
Owner:AIRBUS OPERATIONS GMBH
Elevator car position detection system and method of determining a position of an elevator car in an elevator shaft
InactiveUS8307953B2Simple and cost-effectiveEasy maintenanceComputer controlElevatorsElectricityElectrical resistance and conductance
Elevator cabin position detection system comprising an activation device mounted on an elevator car, a sensor stripe mounted on a sidewall of an elevator shaft and control electronics. The activation device, preferably a light emitting device, activates a portion of the sensor stripe which comprises a feed line, a resistor line and sensors positioned between these. The sensors, preferably optical sensors, when activated by the activation device, conduct electricity to create electrical connection between the feed line and resistor line and thus modify the resulting resistance between an end (A) of the resistor line and an end (B) of the feed line. The control electronics determines the exact position of the elevator cabin based on the resulting resistance between the end (A) of the resistor line and the end (B) of the feed line.
Owner:INVENTIO AG
Web cutting device
InactiveUS20060219072A1Guaranteed uptimeReliable and cost-effective operationFunction indicatorsMetal working apparatusCross cutEngineering
Owner:VALMET TECH INC
Wire Bending Machine
A simplified wire bending machine is provided comprising a bending head with an integrated wire cutoff mechanism. The bending head comprises an inner portion, wherein the inner portion includes a wire bending channel; and an outer portion, wherein the outer portion includes a cutting edge and one or more bending pins. The outer portion is rotatable about the inner portion such that a bending pin is capable of bending a wire around the inner portion. Further, the outer portion is movable from a first position to a second position in which the cutting edge is configured to engage and shear a wire.
Owner:ADVANCED ORTHODONTIC SOLUTIONS
Method for producing a protective coating for a component of a turbomachine, the component itself and the respective machine
A method for obtaining a protective coating (10) on a surface to be treated (16) of a light alloy mechanical component (12) of a turbomachine. The method comprises associating a first coating layer (14) resistant to corrosion on the surface to be treated (16) of the mechanical component (12), and associating a second coating layer (18) resistant to erosion, abrasion and high temperatures on the first coating layer (14).
Owner:NUOVO PIGNONE SPA
Continuous vertical spraying of bodies such as cans
ActiveUS20160074894A1Quick switchReduce needLiquid surface applicatorsLiquid spraying apparatusPositive pressureMechanical engineering
A vertical internal coating machine is taught, which may be used with bodies such as cans (2 piece, 3 piece, draw, redraw,) and including cylinders, containers and any similar body. In the machine cans or similar bodies are vertical in the machine's star wheel rather than horizontal, and the bodies are sprayed with the star wheel in continuous motion without stopping and starting. The machine teaches that a plurality of spray guns may be provided for each pocket of the star wheel. By means of the machine an improved line layout is devised which may eliminate the need to raise the bodies immediately prior to a necker by allowing the vertical can internal coating machine and internal bake over to be disposed on any level of the facility, upper, lower, mezzanine, etc. In green aspects, the machine may use negative pressure cabinets / hoods and positive pressure tunnels to entrain volatile organic chemicals emitted by the spray guns and coated bodies and may send these VOCs to a VOC desctruction device, such as an oven.
Owner:VERTICON LLC
High-density integrated micro-nano photoelectron chip radiator based on thermoelectric cooler
ActiveCN103311196AReduced maintenance needsReduce noiseThermoelectric device with peltier/seeback effectSemiconductor/solid-state device detailsLow noiseThermoelectric cooling
The invention provides a high-density integrated micro-nano photoelectron chip radiator based on a thermoelectric cooler, and aims at solving the cooling problem of chip integration components by using thermoelectric material and a Stirling generator to structure a physical device capable of recycling energy. The device comprises the Stirling generator, the thermoelectric cooler and a power supply module; the thermoelectric cooler is arranged at the top of a chip; the cold end of the thermoelectric cooler is in contact with the upper surface of the chip; the hot end of the thermoelectric cooler is in contact with a hot cavity of the Stirling generator; the power supply module is respectively and parallelly connected with the Stirling generator and the thermoelectric cooler through circuits; and the power supply module comprises a battery and a control circuit. The device provided by the invention utilizes the thermoelectric cooler to cool the chip integration components so as to ensure the stability for the normal work of the chip integration components; and as the heat energy produced by the chip integration components is utilized to be converted into electric energy for supplying electricity to the cooler, the purpose of cooling is realized. The device saves energy and protects environment, is efficient, and has a good cooling effect and lower noise.
Owner:JIANGSU UNIV
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