Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
177results about How to "Lower pressure ratio" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Variable frequency energy-saving control method for refrigeration system
ActiveCN101603751AGive full play to the heat exchange capacityReduce heat transfer temperature differenceSpace heating and ventilation safety systemsSpace heating and ventilation control systemsAir volumeOperating point
The invention belongs to the technical field of energy conservation, and relates to a variable frequency energy-saving control method for a refrigeration system. The control method comprises the steps of: determining the mass flow of a refrigerant according to the change or change trend of cooling load, then determining consumed power of a compressor which satisfies the flow, predicting the minimum condensation pressure which ensures that the thermal load of a condenser satisfies the cooling load and the power change of the compressor through an established energy-saving control mathematical model, and gradually adjusting the power frequency of the compressor to ensure that the rotating speed of the compressor reaches a predicted value; and adjusting the opening degree of an expansion valve to ensure that the condensation pressure reaches to be lowest, realizing the minimum pressure difference operation between the condenser and an evaporator, and ensuring that the operation energy consumption of the refrigeration system is lowest. The method solves the optimizing control problem of the compressor, the expansion valve and a fan in the system, utilizes the energy-saving control mathematical model to perform joint regulation on controllable factors (such as the rotating speed of the compressor, the opening degree of the expansion valve, and the air volume of an outdoor unit) of the operation of the system, ensures that the refrigeration system operates at a best operating point, and realizes the further energy conservation of the refrigeration system based on the variable frequency regulation.
Owner:汉广中药科技(天津)有限公司
Cascade energy usable variable capacity family energy resource system
InactiveCN101240949AAvoid wet compressionRealize the supplyEnergy recovery in ventilation and heatingHeat pumpsSolenoid valveEngineering
The present invention provides an adjustable volume family energy system utilized by step energy, the invention includes a compressor, a hot water heat exchanger, a four-way reversing valve, an outdoor wind cooling pipe coil, a first check valve, a second check valve, a first electronic expansion valve, a second electronic expansion valve, an air conditioning hot and cold heat exchanger, a gas-liquid separator, a water side electric three-way control way, a first solenoid valve, a second solenoid valve, a first water pump, a second water pump. These parts form a refrigerant loop, a domestic hot-cold water loop, realize refrigerating and hot water supplying, single refrigerating, single hot water supplying, single warm supplying, warm supplying and hot water supplying five modes. The control part of the refrigerant loop only has four-way reversing valve and electronic expansion valve in traditional air conditioning system, does not exist refrigerant potential safety hazard. The function of each system is mainly realized by switch and adjustment of the water side two solenoid valves and electric three-way control way, has a simple control, credible security.
Owner:SHANGHAI JIAO TONG UNIV
Heat pump drying device with humidity and temperature adjusting function
InactiveCN105066666AReduce consumptionLower pressure ratioHeat pumpsHeat recovery systemsHigh humidityProcess engineering
The invention relates to a heat pump drying device with a humidity and temperature adjusting function. The heat pump drying device with the humidity and temperature adjusting function comprises a drying room, an air return flue, a circulation draught fan in the air return flue, an air exhaust flue communicated with the air return flue, an exhaust fan at an opening of the air exhaust flue, an air heat recovery device arranged at the intersection of the air return flue and the air exhaust flue, and a heat pump unit, wherein the air return flue is communicated with an air feeding opening and an air return opening of the drying room. The heat pump unit comprises a compressor, a temperature-adjusting condenser, a main condenser, an expansion valve, an indoor evaporator and a heat recovery evaporator which are sequentially connected in series through pipes, wherein the main condenser is arranged in the air return flue, and the heat recovery evaporator is arranged at an opening of the air exhaust flue. The temperature and humidity of the drying room can be adjusted directly at any time according to the need of a drying process, sensible heat and latent heat contained in high-temperature and high-humidity air exhausted out of the drying room are recovered to the maximum extent, the evaporating temperature of the heat pump drying device is increased so as to improve the efficiency of the drying device, and accordingly the heat pump drying device has higher properties of energy saving and environmental friendliness.
Owner:HEFEI TAONENG ENVIRONMENT TECH
Multiple pressure grade mixed working medium cryogenic throttling refrigeration system
ActiveCN1683844AHigh thermal efficiencyGood throttling effectSolidificationLiquefactionProduct gasEngineering
The multiple pressure stage mixed work medium cryogenic throttling refrigeration system consists of several stages of compressor set unit MCPU, back heating pre-cooling unit MRU and evaporator unit EVU. The connection mode includes connecting the high pressure outlet of MCPU to the high pressure inlet of MRU, connecting the low pressure inlet of MCPU to the low pressure outlet one MRU, connecting the high pressure outlet operate MRU to the inlet of EVU, and connecting the outlet of EVU to the low pressure inlet of MRU. The present invention adopts high efficiency multiple-element mixed work medium. The refrigeration system has lowered irreversible loss of compression and back heating process thermodynamically, reduced loss in the practical flow and heat exchange process, and thus high thermodynamic efficiency, and is especially suitable for large and middle scale low temperature refrigerating and gas liquefying fields.
Owner:TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Superhigh-temperature heat pump drying system
InactiveCN105021015ARaise the evaporation temperatureRaise the supply air temperatureDrying gas arrangementsDrying solid materialsWorking fluidEngineering
The invention relates to a superhigh-temperature heat pump drying system. The superhigh-temperature heat pump drying system comprises a drying room, an air return duct, a circulating draught fan, an exhaust duct, an exhaust fan, an air heat recovering device and at least two heat pump units. The air return duct is communicated with an air supply port and an air return port of the drying room. The circulating draught fan is arranged in the air return duct. The exhaust duct is communicated with the air return duct. The exhaust fan is arranged at a duct opening of the exhaust duct. The air heat recovering device is arranged at the intersection of the air return duct and the exhaust duct. The heat pump units are used in parallel. According to the superhigh-temperature heat pump drying system, the two or more heat pump units work in parallel, and the drying room is heated by absorbing low-grade ambient air heat at the initial stage of the drying process, so that the temperature is increased; after the temperature is increased to a certain extent, high-temperature and high-humidity air exhausted out of the drying room is dehumidified, and sensible heat and latent heat contained in the high-temperature and high-humidity air are recovered to the maximum extent; due to the gradient difference of the temperature ranges of cycle working fluid of the heat pump units, relatively higher air supply temperature can be provided through the system, and meanwhile it is guaranteed that the evaporating temperature of the drying units is sufficiently increased.
Owner:HEFEI TAONENG ENVIRONMENT TECH
Formula of non-linear resistor for high voltage surge arrester and manufacturing method thereof
ActiveCN101700976AMeet performance requirementsLower pressure ratioResistor manufactureVaristor coresNonlinear resistorUltra high voltage
The invention relates to the field of manufacturing high voltage metal oxide surge arresters and discloses a formula of a non-linear resistor for a high voltage surge arrester and a manufacturing method thereof, which are applicable to the metal oxide surge arresters for protecting high voltage power devices, in particular to the metal oxide surge arresters of ultra-high voltage AC power transmission and transformation systems of 750kV and 1000kV. The formula comprises additives consisting of the following components by weight percent: 3.1-4.8% of bismuth oxide, 2.5-4.6% of antimony oxide, 1.2-2.6% of cobalt oxide, 0.7-1.5% of silicon oxide, 0.5-0.9% of manganese oxide, 0.7-1.3% of chromium oxide, 0.3-0.9% of nickel oxide, 0.04-0.13% of boron glass powder and 0.01-0.06% of aluminum oxide. The balance is a main component-zinc oxide.
Owner:CHINA XD ELECTRIC CO LTD
Absorption compression type automatic-overlapping refrigerating system and use method
ActiveCN103743150AReduce consumptionIncrease profitMechanical apparatusFluid circulation arrangementVapor–liquid separatorAbsorption compression
The invention discloses an absorption compression type automatic-overlapping refrigerating system and a use method. The absorption compression type automatic-overlapping refrigerating system comprises a generator and the like; the generator is communicated with a solution heat exchanger which is communicated with an absorber; the absorber is further communicated with the solution heat exchanger which is communicated with the generator; the generator is communicated with a condenser which is communicated with a gas-liquid separator; the gas-liquid separator is further communicated with an evaporative condenser which is communicated with a first gas-liquid heat exchanger, the first gas-liquid heat exchanger is communicated with an evaporator which is communicated with the first gas-liquid heat exchanger, and the first gas-liquid heat exchanger is communicated with the evaporator which is communicated with the first gas-liquid heat exchanger communicated with a compressor; the gas-liquid separator is communicated with the evaporative condenser; the compressor and the evaporative condenser are communicated with the absorber.
Owner:重庆市夔州冷链物流有限公司
Supercritical/trans-critical carbon dioxide combined cycle power generation system for internal combustion engine waste-heat utilization
ActiveCN108868930ASave compression workIncrease net power outputInternal combustion piston enginesExhaust apparatusBrayton cycleExternal combustion engine
The invention discloses a supercritical / trans-critical carbon dioxide combined cycle power generation system for internal combustion engine waste-heat utilization. After carbon dioxide enters a working medium pump from a condenser, the carbon dioxide is compressed into supercritical gas, then the compressed carbon dioxide gas is divided into two branches in an outlet of the working medium pump, wherein one branch is used as the working medium for a trans-critical carbon dioxide Rankine cycle system, and the another branch is used as the working medium of a supercritical carbon dioxide recompression Breton cycle system. The supercritical / trans-critical carbon dioxide combined cycle power generation system uses the waste heat of internal combustion engine exhaust gas as a heat source, and sequentially recycles the high quality waste heat of the internal combustion engine exhaust gas by supercritical carbon dioxide recompression Breton cycle, and recycles the low quality waste heat of theinternal combustion engine exhaust gas by trans-critical carbon dioxide Rankine cycle, and converts the waste heat energy of a power device into electric energy, has the characteristics of high thermal efficiency, compact structure, low maintenance cost and the like, and can significantly improve the economy of the power device.
Owner:JIANGSU UNIV OF SCI & TECH
Low-grade heat energy auxiliary-drive composite low-temperature refrigerating system
InactiveCN101949611AImprove energy savingIncrease inspiratory pressureRefrigeration machinesThermal energyVapor–liquid separator
The invention discloses a low-grade heat energy auxiliary-drive composite low-temperature refrigerating system. The system comprises a generator, an ejector, a working medium pump, a condenser, a gas-liquid separator, a compressor, a first throttling component, a condensation evaporator, a second throttling component, an evaporator and a heater. A high-boiling-point component is condensed into liquid to serve as a low-boiling-point component cooling medium through the ejector driven by the low-grade heat energy; and the ejector has another function of increasing suction pressure of the low-boiling-point component at a suction port of the compressor to reduce the compression ratio of the compressor so as to realize lower refrigerating temperature. Because the compression process of the high-boiling-point component during circulation is finished by the ejector, the power consumption of the compressor is reduced; and the ejector also improves the suction pressure of the low-boiling-point component at the suction port of the compressor and is also favorable for further reducing the power consumption of the compressor. The system has the advantages of realizing high-efficiency utilization of a low-grade energy source, along with stable running, obvious energy saving effect and broad application prospect.
Owner:HENAN UNIV OF SCI & TECH
Air conditioner system for independently controlling temperature and humidity and refrigeration/dehumidification method
InactiveCN101363648AAchieve independent controlImprove comfortMechanical apparatusSpace heating and ventilation safety systemsWater circulationProcess engineering
The invention provides an air conditioning system which independently controls temperature and humidity and a refrigeration / dehumidifying method. A cooling media circulation system, a water circulation system and an air supply system of an air duct machine are assembled to realize independent control of the temperature and the humidity, thus greatly improving comfort of a user and realizing energy saving.
Owner:HISENSE (SHANDONG) AIR CONDITIONING CO LTD
Energy-saving environment-friendly layout of large-scale routine hypersonic wind tunnel
ActiveCN105628331ASolve the problem of high exhaust noise and waste heat wasteReduce the impactAerodynamic testingTest segmentEngineering
The invention provides an energy-saving environment-friendly layout of a large-scale routine hypersonic wind tunnel. The system comprises a gas tank, a heater, a stabilization segment, a jet pipe, a test segment, an ultra-expanding segment and a heat exchanger, wherein the stabilization segment, the jet pipe, the test segment and the ultra-expanding segment are successively connected to form a major test wind tunnel assembly, the heat exchanger comprises an intermediate channel and a peripheral channel encircling the intermediate channel, an outlet of the ultra-expanding segment communicates with the intermediate channel of the heat exchanger, the gas tank communicates with the peripheral channel of the heat exchanger, and high-pressure gas in the gas tank is sent into the heater via the peripheral channel of the heat exchanger by means of a gas pipeline, then is sent into the stabilization segment after passing through the heater and is discharged through flowing through the intermediate channel of the heat exchanger after being tested in the major assembly of a test wind tunnel. According to the invention, energy consumption is reduced, the operation cost is decreased, at the same time, the influence on the environment is reduced, and the problems of large exhaust noise and waste of afterheat of a conventional hypersonic wind tunnel can be solved.
Owner:CHINA ACAD OF AEROSPACE AERODYNAMICS
Refrigerating system with ejector and refrigerating method thereof
The invention discloses a refrigerating system with an ejector. The main trend of ejectors is that: a working medium becomes a gaseous working medium through an expansion valve, and the gaseous working medium from an evaporator enters the ejector for pressure expanding through injection, so that the pressure of the working medium is improved; and the working medium is compressed in a compressor and enters a condenser to finish a refrigerating cycle. However, according to the invention, a liquid working medium passing through the expansion valve is continuously throttled through another expansion valve to have a low-temperature low-pressure state, is evaporated in the evaporator, becomes a gaseous working medium through heat absorption to be ejected into the ejector, is pressurized in the ejector and enters the condenser to finish a refrigerating cycle. Therefore, the pressure of the working medium in the compressor is improved, a pressure ratio of the compressor is reduced, and the power consumption of the compressor is reduced, so that the efficiency of the refrigerating system is improved.
Owner:SHANGHAI JIAO TONG UNIV
One-grade self-overlaying low-temperature refrigeration circulating system using double-stage gas-liquid separator
ActiveCN105737427AIncrease component contentHigh purityCompression machines with cascade operationRefrigeration componentsVapor–liquid separatorBoiling point
The invention proposes a one-grade self-overlaying low-temperature refrigeration circulating system using a double-stage gas-liquid separator. The system comprises a compressor and a condenser connected with an inlet of a first-grade gas-liquid separator in sequence; a saturated liquid refrigerant, rich in a high-boiling point working medium, generated by the first-grade gas-liquid separator enters a second-grade gas-liquid separator by a throttle valve to separate to obtain saturated gas and liquid; and a saturated gas working medium generated by the first-grade gas-liquid separator is mixed with the gas obtained by the second-grade gas-liquid separator by the throttle valve to enter an evaporation condenser to cool as supercooled liquid, flows into an evaporator to absorb heat to change to the saturated gas after being throttled by the throttle valve, is mixed with a working medium rich in a high-boiling point component from the second-grade gas-liquid separator to enter a condensation evaporator to absorb heat to change to superheated gas, and finally enters the compressor to realize complete self-overlapping refrigeration circulation. The system adopts two grades of serially connected gas-liquid separators to further purify a low-boiling point working medium for refrigeration, promotes the gas sucking pressure of the compressor, increases the flow of the evaporator working medium, and effectively improves the performance of a low-temperature refrigeration system.
Owner:XI AN JIAOTONG UNIV
Energy self-supplying type carbon dioxide cold and hot electricity co-generation system used for low-grade heat source
ActiveCN110887278ASave compression workIncrease net output powerCompression machinesFluid circulation arrangementGas compressorCogeneration
The invention discloses an energy self-supplying type carbon dioxide cold and hot electricity co-generation system used for a low-grade heat source. The energy self-supplying type carbon dioxide coldand hot electricity co-generation system comprises a transcritical carbon dioxide reheat Rankine dynamic cycle system and a transcritical carbon dioxide injection refrigeration cycle system; the energy self-supplying type carbon dioxide cold and hot electricity co-generation system integrates reheat Rankine dynamic cycle and injection refrigeration cycle, adopts carbon dioxide as a single workingmedium, converts low-grade heat energy to useful work through a extraction turbine of the transcritical carbon dioxide reheat Rankine dynamic cycle system and supplies the heat energy to users by using a water heater. The transcritical carbon dioxide injection refrigeration cycle system utilizes high-pressure exhaust waste heat of the extraction turbine to drive an injector to output cold energy to the users. Through reasonable arrangement of the system, the system can output more electric energy. By adoption of a working medium pump and a low-pressure-ratio gas compressor, the energy self-supplying type carbon dioxide cold and hot electricity co-generation system reduces compression power efficiently during the system operation and improves net electric generation and conversion efficiency of the low-grade heat energy of the system.
Owner:北京绿卡科技有限公司
Turbomachine with fan rotor and reduction gearbox driving a low-pressure decompressor shaft
ActiveUS20200080496A1Guarantee efficiencyOvercomes drawbackEngine fuctionsGas turbine plantsClassical mechanicsControl theory
A turbomachine comprising a ducted fan, a low-pressure turbine shaft and a reduction gearbox housed in a casing between the fan and the low-pressure turbine shaft, the fan rotor supplying airflow to a primary stream and a secondary stream and comprising a hub of diameter D1, wherein—the diameter D3 of the fan rotor is greater than 82 inches (2.08 metres),—the pressure ratio of the fan is between 1.10 and 1.35, the turbomachine comprises a low-pressure compressor separate from the fan, the reduction gearbox being interposed between the fan rotor and a turbine shaft of the low-pressure compressor, and wherein the reduction gearbox casing has an outside diameter D2 greater than the diameter D1 of the hub, the pitch diameter D4 of the reduction gearbox ring being between 0.15 and 0.35 times the fan rotor diameter.
Owner:SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A
Combination method and device of two-stage compression heat pump air conditioner and refrigerator system
InactiveCN101270934AAvoid frostLower pressure ratioHeat pumpsDomestic refrigeratorsRefrigerator carEngineering
The invention provides an assembly method of a two-stage compression heat pump air-conditioning and refrigerator system and a device used the method. The method is characterized in that a split-type air-conditioning outdoor system and a split-type refrigerator outdoor system are assembled together; the compressors of two different pressure levels of the same unit are used; the adjustment of the air and the refrigeration of the refrigeration are realized through the serial and parallel arrangement of the cooling pipeline, the control of the control valves, and the auxiliary function of the intermediate heat exchanger cold / heat exchange system; as the air-conditioning refrigerant cycling circuit and the refrigerator refrigerant cycling circuit arranged in parallel supply heat energy to the rooms and supply cold energy to the refrigerator when operating in opposite directions; the air-conditioning refrigerant cycling circuit and the refrigerator refrigerant cycling circuit supply cold energy to both the room and the refrigerator when arranged both in series and in parallel and operating in collaboration. The invention realizes the transfer between different work modes of the system through changing the cycling direction of the refrigerant of the system and the allocation of flow of the refrigerant. The different types of energy utilize each other, and the energy-saving and noise-reducing effects are obvious. The indoor machine can be arranged in an embedded type, which saves space and is beneficial for the beautification of the environment. The device is widely applicable to locations such as households, villas, hotels and motels, etc.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Turbine rear support bearing seat, cooling method and turbine fan engine
ActiveCN104819016AAchieve coolingImprove performanceMachines/enginesEngine componentsEngineeringTurbine
The invention discloses a turbine rear support bearing seat, a cooling method and a turbine fan engine. The turbine rear support bearing seat of the turbine fan engine comprises an outer containing cartridge receiver, a main runner cartridge receiver, a gas exhauster cartridge receiver and a bearing seat, wherein an outer duct is formed between the outer containing cartridge receiver and the main runner cartridge receiver; an inner duct is formed between the main runner cartridge receiver and the gas exhauster cartridge receiver; a bearing cavity is formed in the gas exhauster cartridge receiver, and a bearing support plate used for guiding the outer containing cold liquid in the outer duct to the bearing seat for exchanging heat for cooling the bearing seat is arranged on the outer wall surface of the bearing seat. The bearing support plate is used for supporting the fluid flow passage, offering the liquid cooling loop for cooling rear support bearing seat, cooling and protecting the oil inlet pipeline and the oil returning pipeline of the oil and improving the structure performance of the complete machine.
Owner:CHINA AVIATION POWER MACHINE INST
Auto-cascade vapor compression type refrigeration cycle system with evaporation subcooler
ActiveCN105546864AImprove performanceIncrease subcoolingMechanical apparatusCompression machines with cascade operationVapor–liquid separatorEvaporation
Owner:XI AN JIAOTONG UNIV
Rectifying type variation-concentration self-overlaying gas liquefaction system
ActiveCN102147162ASmall heat transfer temperature differenceReduce unit liquefaction workCompression machines with non-reversible cycleFluid circulation arrangementProcess engineeringProduct gas
The invention discloses a rectifying type variation-concentration self-overlaying gas liquefaction system which comprises a compressor, a condenser, a rectifying device and a feed gas liquefaction loop, wherein the feed gas liquefaction loop comprises a first heat exchanger group, a second heat exchanger group and a first throttle valve arranged between the first heat exchanger group and the second heat exchanger group; and two parallel arranged first variable concentration loop and second variable concentration loop are arranged between the rectifying device and an air suction hole of the compressor. The rectifying device is used for replacing a multistage separation process of the traditional mixed refrigerant gas liquefaction system, and different components of high-pressure liquids are led from the bottom and the top of the rectifying device and are respectively subjected to pressure reduction and then enter the two heat exchanger groups, water equivalent change of a feed gas cooling and liquefaction process is optimized and matched, and variable working condition regulating capacity of the liquefaction system is improved by adopting the variable concentration loops. The invention has the advantages of simple structure, operation reliability, high system liquefaction efficiency and the like, and is suitable for various small and minitype gas liquefaction systems with high performance requirements on variable working conditions.
Owner:ZHEJIANG UNIV
Boosted air source heat pump
InactiveUSRE39625E1Improve pumping capacityFully heatedCompressorCentral heating with accumulated heatNuclear engineeringEconomizer
A boosted source heat pump (BSHP) is presented having a primary compressor, a booster compressor, an economizer, and a lubricant management system. At least the primary compressor is a twin-single compressor. The lubricant management system includes traps to prevent migration of lubricant to a non-operating compressor, and aspiration tubes from the sump to the low pressure intake zone to each compressor.
Owner:NORTHEAST BANK
Novel compression auxiliary jetting refrigerating system with supercooler
InactiveCN104930741AReduce trafficReduce power consumptionMechanical apparatusCompression machinesWorking fluidEngineering
The invention discloses a novel compression auxiliary jetting refrigerating system with a supercooler. The novel compression auxiliary jetting refrigerating system comprises a compressor, a condenser, an evaporator, a generator and an ejector. An outlet of the evaporator is connected with an inlet of the compressor. An outlet of the compressor is connected with a driving fluid inlet of the injector. An outlet of the ejector is connected with an inlet of the condenser. An outlet of one way of the condenser is connected with an inlet of the generator through a pump. An outlet of the ejector is connected with an inlet of the condenser. An outlet of one way of the condenser is connected with an inlet of the generator through a pump. An outlet of the generator is connected with a working fluid inlet of the ejector. An outlet of another way of the condenser is connected with a first inlet of the supercooler through a first throttling device. A first outlet of the supercooler is connected with a driving fluid inlet of the injector. An outlet of the third way of the condenser is connected with a second inlet of the supercooler. A second outlet of the supercooler is connected with an inlet of the evaporator through a second throttling device. The novel compression auxiliary jetting refrigerating system is high in efficiency and low in energy consumption.
Owner:ZHEJIANG UNIV OF TECH
Control apparatus for internal combustion engine
ActiveCN106246393AIncreased Torque Boost RequirementsImprove responsivenessElectrical controlInternal combustion piston enginesTurbochargerEngineering
A control apparatus is configured, after a torque increase request to increase an engine torque is made, to perform an air supply operation using an electric compressor where it is predicted that a pressure ratio of a turbo-compressor will become less than 1 after a throttle valve is opened accompanying the torque increase request, and, on the other hand, not to perform the air supply operation where it is predicted that the pressure ratio will not become less than 1 after the throttle valve is opened.
Owner:TOYOTA JIDOSHA KK
Heat-accumulating-type heat pump system for vehicle
InactiveCN110271378ARealize integrationMeeting comfort needsAir-treating devicesHeat recovery systemsSecondary loopEngineering
The invention discloses a heat-accumulating-type heat pump system for a vehicle. The heat-accumulating-type heat pump system comprises three subsystems: a refrigerant circulation system, a secondary circuit circulation system and a heat accumulating circulation system; the secondary circuit system comprises a second circulation pump, a first heat exchanger, a sixth heat exchanger, a temperature air door and a kettle; the second circulation pump, the first heat exchanger, the sixth heat exchanger and the kettle are sequentially connected through a pipeline to form a cycle; and the sixth heat exchanger and the temperature air door are located in an air handling unit. The secondary circuit system is adopted, thus the heating capacity of the heat pump system can be excavated better, meanwhile, the pressure of the high-pressure side of the refrigerant circulation system is lowered, the ratio of the high pressure to the low pressure of the system is also decreased, and the operating environment of a compressor is improved, especially when the compressor continuously works under a heat pump mode for a long time.
Owner:上海银轮热交换系统有限公司
Automobile air-conditioning system
ActiveCN103712277AImprove efficiencyLower pressure ratioMechanical apparatusCompression machinesIntermediate heat exchangerAutomobile air conditioning
The invention discloses an automobile air-conditioning system. The automobile air-conditioning system further comprises an ejector (12) and an intermediate heat exchanger (6). In a heating mode, a working medium flowing from an outlet of a second heat exchange (102) is divided into a first channel and a second channel; the first channel of the working medium flows into the ejector (12) through a drive inlet after flowing out of a high-temperature side (62), and then is divided into a first branch and a second branch after being ejected from an outlet of the ejector (12), the first branch of the working medium flows back into a compressor (1) through a low-temperature side (61), and the second branch of the working medium flows into the ejector (12) through a bypass guide hole via a third heat exchanger (3). The automobile air-conditioning system has the advantages that efficiency of the compressor and the air-conditioning system can be improved effectively, requirements for heat in high and cold environment can be guaranteed, and comfortableness of passengers and stable and efficient performance of heating components are guaranteed.
Owner:HANGZHOU SANHUA RES INST CO LTD
Ejector expansion auto-cascade refrigeration circulation system and work process
ActiveCN108106048AImprove performanceImprove the coefficient of performanceMechanical apparatusEfficient regulation technologiesPressure riseWorking fluid
The invention discloses an ejector expansion auto-cascade refrigeration circulation system and a work process. The system comprises a compressor, a condenser, an ejector, a gas and liquid separator, athrottling valve, an evaporator, a backpressure valve and an evaporation cooler which are connected on a pipeline; the ejector takes condenser outlet high-pressure non-azeotropy mixture refrigerationagent gas and liquid two-phase fluid as work fluid, an evaporator outlet low-pressure refrigeration agent is ejected, a two-phase refrigerant obtained after mixed pressure rise enters the gas and liquid separator through an ejector outlet to be separated into the liquid state and the gas state, a gas outlet of the gas and liquid separator is divided into two paths, one path is connected with an air suction pipeline of the compressor, and the other path is connected with a condensation channel inlet of the evaporation condenser; a liquid outlet of the gas and liquid separator is connected withthe backpressure valve, and the backpressure valve adjusts the flow and the pressure of the refrigeration agent of the evaporation condenser by sensing the liquid outlet pressure of the gas and liquid separator. The ejector and the backpressure valve are effectively arranged in the auto-cascade refrigeration circulation system, the ejector expansion power recycling effect and the system dynamic adjusting effect can be sufficiently improved, and the refrigeration efficiency of the auto-cascade refrigeration circulation system can be efficiently improved.
Owner:XI AN JIAOTONG UNIV
Two-stage compressor heat pump and oil return control system and method thereof
ActiveCN106766371AReturn oil evenlyGuaranteed refrigerant compressionCompressorMechanical apparatusControl systemEngineering
The invention provides a two-stage compressor heat pump and an oil return control system and method thereof. The two-stage compressor heat pump comprises an indoor heat exchanger, an outdoor heat exchanger, a low-pressure compressor (1) and a high-pressure compressor (2), wherein the exhaust opening of the low-pressure compressor (1) communicates with the intake opening of the high-pressure compressor (2) through a medium-pressure pipeline (17); the exhaust end of the high-pressure compressor (2) is also connected with an oil separator (3); oil separated by the oil separator (3) is divided into two paths through an oil return pipeline (18); one path is connected to the intake end of the low-pressure compressor (1) through a ow-pressure oil return pipeline (19), and the other path is connected to the intake end of the high-pressure compressor (2) through a high-pressure oil return pipeline (20). According to the two-stage compressor heat pump, oil returning can be separately performed on the low-pressure compressor and the high-pressure compressor as required to ensure uniform oil return of both the low-pressure compressor and the high-pressure compressor; and the phenomenon of abnormal stall caused by wear of a cylinder is effectively prevented, the service lives of the compressors are prolonged, and the performance of the heat pump is improved.
Owner:GREE ELECTRIC APPLIANCES INC
All-working-condition efficient fresh air ventilator for multi-stage heat pump heat recovery
ActiveCN112503680ALower pressure ratioReduce power consumptionMechanical apparatusHeat recovery systemsFresh airCondensation temperature
The invention relates to an all-working-condition efficient fresh air ventilator for multi-stage heat pump heat recovery. The ventilator comprises a first air duct and a second air duct, and further comprises a multi-stage nested refrigerant loop, wherein the multi-stage nested refrigerant loop forms a temperature gradient on the evaporation side, bears more fresh air heat loads at a high evaporation temperature and bears more fresh air wet loads at a low evaporation temperature, therefore load gradient change distribution is formed; and the multi-stage nested refrigerant loop forms a temperature gradient on the condensation side, and a gradient condensation temperature matches the slippage of a return air temperature, so that a pressure ratio of each stage of refrigerant steam compressioncycle is reduced. Compared with the prior art, a multi-stage heat pump heat recovery cycle is arranged, so that the pressure ratio of each stage of refrigerant steam compression cycle is reduced, thepower consumption of a compressor is reduced, and the system energy efficiency can be effectively improved; and pertinence and comprehensiveness matching can be carried out on annual working conditions, and multiple modes of refrigeration and dehumidification in summer, heating in winter and internal circulation in transition seasons can be achieved.
Owner:TONGJI UNIV
Mix refrigerant, preparing method and uses thereof
ActiveCN101270275ASmall temperature glideImprove thermal cycle efficiencyHeat-exchange elementsDischarge rateRefrigerant
The invention provides a ternary near azeotropic refrigerant, which comprises tertiary mixture consisting of 1, 1, 2, 2-tetra fluoro ethane, 1, 1-difluoroethane and propane. The total of the mass percent concentration of all components of the mixed refrigerant is 100 percent, including 1, 1, 2, 2-tetra fluoro ethane with the condensation of 1 percent to 20 percent, dimethyl ether with the condensation of 1 percent to 50 percent, and propane with the condensation of 30 percent to 90 percent. The invention further provides a method for preparing the mixed refrigerant and a use of the mixed refrigerant. The mixed refrigerant has high efficiency and high evaporating pressure with large refrigerating capacity when the compressor discharge rate is the same; the ODP is zero, and compared with R502 and R404A, the GWP of the refrigerant is significantly reduced.
Owner:青岛中科未来健康研究院有限公司
Ejection refrigerating device, circulation system, air conditioning equipment and control method
ActiveCN104048448ALower pressure ratioReduce power consumptionMechanical apparatusFluid circulation arrangementVapor–liquid separatorEngineering
The invention relates to an ejection refrigerating device, a circulation system, air conditioning equipment and a control method. The ejection refrigerating device comprises an ejector and a gas-liquid separator. An ejection outlet of the ejector is connected with the gas-liquid separator. A working opening and an ejection opening of the ejector are connected with an outlet of an outdoor heat exchanger and an outlet of an indoor heat exchanger respectively. A gas outlet pipe and a liquid outlet pipe of the gas-liquid separator are connected with a throttling valve in front of an inlet of a compressor and a throttling valve in front of an inlet of the indoor heat exchanger respectively. A first flow regulating unit and a second flow regulating unit are arranged in front of the working opening and the ejection opening of the ejector respectively. Compared with existing air conditioning equipment, the air conditioning equipment can improve refrigerating circulation efficiency on the aspect of throttling expansion work and on the aspect of compressor power consumption; besides, flow regulation can be carried out on working flow and ejection flow which are led to the ejector, and controllability and adaptability of ejection refrigerating are enhanced.
Owner:GREE ELECTRIC APPLIANCES INC
Separation technique for low pressure oxygen-enriched air
InactiveCN102213537AReduce energy consumptionLower pressure ratioSolidificationLiquefactionAir filtrationInterference factor
The invention belongs to the field of air separation technology and in particular relates to a separation technique for low pressure oxygen-enriched air, comprising the steps of impurity removal by means of air filtration, compression to 0.33-0.44MPa with an air compressor, purification, heat exchange, rectification, liquid oxygen vaporization and pressurization. The technique has the characteristics of being simple in technological process, convenient in operation, stable and reliable in running, stable in oxygen purity of the product, less in outside interference factors, long in continuous running period, low in power consumption for oxygen generation, low in equipment cost, high in automation degree and convenient in engine start and stop.
Owner:开封黄河空分集团有限公司
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com