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57results about How to "Not easy to frost" patented technology
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Frost-less air-source heat pump hot water unit and proportional-integral-differential control method for same
InactiveCN103245151AWell mixedImprove performanceFluid heatersCorrosion preventionProportional integral differentialEngineering
The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.
Owner:NANJING NORMAL UNIVERSITY +1
Air blowing method employing top cover to blow air and air-cooling type refrigerator employing the method
InactiveCN1880894AFast coolingImprove cooling effectShow cabinetsLighting and heating apparatusRefluxEngineering
The invention relates to a wind cold refrigerator and a method for feeding wind with top cover, wherein said method comprises: using force wind cycle refrigerating system to flow cold wind in refrigerator to cool food; the invention is characterized in that: the wind open is arranged on the top cover of refrigerator; the reflux open is on the bottom wall to feed the cold wind from down to up to the cold room. The inventive refrigerator is characterized in that: the wind open is on the top cover; the reflux open is on the bottom wall. The invention can force the air cooled by vaporized into the cold room, to be blown into cold room from up to down, to obtain high cooling speed, better cooling effect, and high efficiency.
Owner:HAIER GRP CORP +1
Indoor air source heat pump water heater
InactiveCN1554901AStable working conditionNot easy to frostLighting and heating apparatusDomestic hot-water supply systemLow noiseAir exchange
The indoor air source heat pump water heater is a kind of hot water supplier with air as heat source. The present invention has evaporator installed in the air inlet of the air exchanging fan to exhaust air outdoor and contacting closely to the air exchanging fan; compressor, throttle unit and drying filter installed below water reservoir and connected to the lower opening of the condensator inside the water reservoir. The present invention has the advantages of stable heat pump work state, easy regulation of the throttle unit, high efficiency of the heat pump, no frosting in the evaporator, compact structure, small volume, low noise, etc.
Owner:北京格瑞那环能技术有限责任公司
Solar energy coupling air source heat pump integrated domestic hot water system and heating method thereof
ActiveCN105066446ALow running costReduce layout sizeFluid heatersSolar heat devicesAutomatic controlControl system
The invention discloses a solar energy coupling air source heat pump integrated domestic hot water system and a heating method thereof. A solar evaporation heat collector is arranged on inner surface of a shell of an outdoor unit of a solar energy air source heat pump, and an indoor automatic-controlled heat preservation water tank is arranged in a room and regulated and controlled by a control system through a circulation pipeline to achieve solar energy coupling air source heat pump integrated domestic hot water supplying. According to the solar energy coupling air source heat pump integrated domestic hot water system and the heating method thereof, functional advantage complementation of the solar energy and the air source heat pump is achieved by controlling the coupling system, and on the basis of momentarily and sufficiently supplying domestic hot water of which the temperature is intuitively and individually set to a user, the operation cost of the system is further lowered, and the function guarantee performance and using comfortableness of the system are improved.
Owner:SHANXI YIDING ENERGY SAVING ENVIRONMENTAL PROTECTION TECH CO LTD
Solar energy coupling air source heat pump integrated air conditioning system and heating and refrigerating method thereof
ActiveCN105066511ALow investment costLow running costHeat pumpsRefrigeration safety arrangementControl systemEvaporation
The invention discloses a solar energy coupling air source heat pump integrated air conditioning system and a heating and refrigerating method thereof. A solar evaporation heat collector is arranged on the inner surface of a shell of an outdoor unit of a solar energy air source heat pump, an indoor unit of the air source heat pump is arranged in a heating room, and a capillary copper pipe mesh radiation heating layer of the air source heat pump is arranged on a base layer of a heating floor and regulated and controlled through a control system and circulation pipelines of the control system to achieve solar energy coupling air source heat pump integrated heating and refrigerating. According to the solar energy coupling air source heat pump integrated air conditioning system and the heating and refrigerating method thereof, thermal field coupling is performed on solar energy and the air source heat pump, functional advantage complementation optimization of the solar energy and the air source heat pump is achieved by controlling the coupling system, the initial investment and operation cost of the system is further lowered, and the function guarantee performance and using comfortableness of the system are improved.
Owner:TAIYUAN UNIV OF TECH
Start-stop control system for air-conditioning compressor of automobile and control method of control system
ActiveCN102967024AAvoid evaporator frostingNot easy to frostSpace heating and ventilation safety systemsLighting and heating apparatusAir volumeEvaporator
The invention discloses a start-stop control system for an air-conditioning compressor of an automobile. The control system comprises a controller, a temperature sensor, a humidity sensor and an air volume detection module, wherein the controller is stored with compressor start-stop temperature; the temperature sensor is arranged on the surface of an evaporator and used for detecting evaporator temperature; the controller controls the start and stop of the compressor according to the received evaporator temperature value and the set compressor start-stop temperature; the humidity sensor is used for detecting air humidity at an air-conditioning air inlet and transferring the detected humidity information to the controller; the air volume detection module is used for detecting air velocity at an air-conditioning air outlet and transferring the detected air velocity information to the controller; and the controller is stored with four groups of compressor start-stop temperatures corresponding to high and low air velocities as well as high and low humidities, and alternatively selects the compressor start-stop temperatures to control the start and stop of the compressor. The control system can control the start and stop of the compressor by selecting different temperatures according to the air humidity and the air volume, achieve accurate control of the start and stop of the compressor, and ensure smooth running of an air conditioner of the automobile under any condition, and the maximum refrigerating capacity is an air-conditioning system is improved.
Owner:GREAT WALL MOTOR CO LTD
Solar energy electric heating complementary air conditioner heat pump unit and control method
InactiveCN106839095AIncrease high pressureRaise low pressureMechanical apparatusSpace heating and ventilation safety systemsSolar air collectorSolenoid valve
The invention discloses a solar energy electric heating complementary air conditioner heat pump unit and a control method. The unit comprises a host circulation system and a solar energy auxiliary circulation system. According to the host circulation system, an auxiliary heat exchanger (5) is further arranged between a first throttle valve (3) and an outdoor heat exchanger (4). The solar energy auxiliary circulation system is constituted by a circulation pump (6), a solar energy collector (7), a three-way valve (8), an ejector (9), an intermediate heat exchanger (10), a second throttle valve (11), a first solenoid valve (12) and a second solenoid valve (13). An outlet of the solar energy collector (7) communicates with a first valve port of the three-way valve (8); a second valve port of the three-way valve (8) communicates with an inlet of the ejector (9); and an outlet of the ejector (9) communicates with an inlet of the intermediate heat exchanger (10). The key of the method is that when an outdoor environment temperature is larger than a critical value, a fan of the outdoor heat exchanger (4) operates in a low wind gear. The unit and the method can reduce energy consumption of refrigeration and heating.
Owner:NINGBO AUX ELECTRIC
Anti-condensation coating, radiation terminal with anti-condensation coating on surface, radiator and air-conditioning system
ActiveCN106833371AImprove stabilityExtend your lifeCondensate preventionLighting and heating apparatusInorganic particleGraphene coating
The invention provides an anti-condensation coating, a radiation terminal with the anti-condensation coating on surface, a radiator or an air-conditioning system. The anti-condensation coating comprises a functional material and an organic solvent, wherein the functional material comprises the following materials by weight percent: 40-79wt% of super-hydrophobic raw material, 1-10wt% of graphene and 20-50wt% of mixture of graphene coated inorganic particle and fluorine-containing organic particle. The mixture of graphene coated inorganic particle and fluorine-containing organic particle comprises a particle mixture in the grain size of 0.2-5 mu m and the graphene coating the particle mixture. The radiation terminal with the anti-condensation coating, the radiator and / or the air-conditioning system provided by the invention can be used for solving the problem of the prior art that air conditioning and heating are not matched and used with each other, so that the indoor heating radiator and the radiation terminal are difficult to dew in summer and the outdoor heat radiator is difficult to dew.
Owner:中安瑞材(北京)科技有限公司
Air conditioner system
InactiveCN103673082ARaise the suction temperatureImprove motor efficiencySpace heating and ventilation detailsHeating and refrigeration combinationsEngineeringRefrigerant
The invention provides an air conditioner system. The air conditioner system comprises a compressor, a four-way reversing device, a throttling device, an indoor machine heat exchanger and an outdoor machine heat exchanger; the indoor machine heat exchanger is communicated with the outdoor machine heat exchanger through a refrigerant pipeline; the air conditioner system also comprises a heat exchanging device; the heat exchanging device comprises a casing and a heating portion; an accommodating groove is formed in the casing; the accommodating groove is communicated with the indoor machine heat exchanger through a pipeline; the refrigerant pipeline is at least partially arranged inside the accommodating groove; the heating portion is connected to the outer wall of the refrigerant pipeline. The air conditioner system effectively solves the problems that, in the prior art, the air conditioner system wastes energy under a refrigerating mode and the outer machine heat exchanger is easy to be frosted under a heating mode in a low temperature environment.
Owner:GREE ELECTRIC APPLIANCES INC
Refrigerator
InactiveCN102997562ALittle change in temperature differenceNot easy to frostLighting and heating apparatusRefrigeration devicesFrostMagnetic valve
The invention discloses a refrigerator. The refrigerator comprises a refrigerator body, a refrigeration evaporator, a first freezing evaporator, a second freezing evaporator and a magnetic valve, wherein the refrigerator body comprises a casing, a refrigeration box inner container and a freezing box inner container, and the refrigeration box inner container and the freezing box inner container are arranged in the casing. The refrigeration evaporator is arranged on a lateral wall of the refrigeration box inner container. The first freezing evaporator is arranged on a lateral wall of the freezing box inner container and communicated with the refrigeration evaporator. The second freezing evaporator is arranged on the lateral wall of the freezing box inner container. The magnetic valve is connected with the refrigeration evaporator and the second freezing evaporator to control a refrigerant to enter the refrigeration evaporator and the second freezing evaporator. When the refrigerator refrigerates, the first freezing evaporator and the second freezing evaporator work alternatively, temperature difference in a freezing chamber is small, frosting is not easily produced in the freezing chamber, and frost layers in the freezing chamber are distributed on four lateral walls of the freezing box inner container in frosting, so that frost are convenient to remove, and energy consumption can be reduced.
Owner:HEFEI MIDEA REFRIGERATOR CO LTD
Evaporator of heat pump water heater and heat pump water heater
InactiveCN102589200ASubstantial performance improvementConsiderable positive effectFluid heatersEvaporators/condensersEngineeringPrice ratio
An evaporator of a heat pump water heater is characterized in that the evaporator (11) consists mainly of a suction fan (1) and an evaporative heat exchanger (2); the suction fan (1) comprises an outer circulating air channel (3); and the evaporative heat exchanger (2) can be fixed on the suction fan (1) and is in heat conductive combination with the outer circulating air channel (3). The heat pump water heater comprises a compressor (8), a water condenser (9), a throttle device (10) and the evaporator (11). The evaporator of the heat pump water heater provided by invention can absorb waste heat, has frosting resistance, stable performance and high comprehensive performance-price ratio, and is suitable for large-scale application.
Owner:胡宗红
Vehicle air conditioner anti-frosting control method
InactiveCN105135614ANot easy to frostImprove frost resistanceSpace heating and ventilation safety systemsSpace heating and ventilation control systemsTemperature controlElectricity
The invention provides a vehicle air conditioner anti-frosting control method. The vehicle air conditioner anti-frosting control method comprises the following control steps and collects the following input signals: 1, carrying out electrifying initialization; 2, carrying out signal collection: (1), collecting the temperature of an evaporator as a control input signal; (2), collecting the temperature of inlet air or the temperature of vehicle exterior as a control input signal; (3), collecting the humidity of the inlet air or the humidity of the vehicle exterior as a control input signal; (4), collecting the position of a new air air gate as a control input signal; (5), collecting air blower side voltage as a control input signal; (6), collecting the rotating speed of an engine or the rotating speed of a compressor as a control input signal; 7, collecting the speed of a vehicle as a control input signal; and (8), collecting the On / Off state and the conversion time of the compressor as control input signals; 3, carrying out signal processing and setting a target temperature control point; and 4, controlling the connection and disconnection of the compressor. The vehicle air conditioner anti-frosting control method utilizing the signals collected according to factors, such as environment, work condition and mode, as novel target temperature control points can ensure that a vehicle air conditioner is not prone to frosting, can exert the optimum performance of the vehicle air conditioner, and can improve the riding comfort of passengers.
Owner:上海松芝酷能汽车技术有限公司
Control method of air conditioner in heating mode
InactiveCN108444058ANot easy to frostImprove heating efficiencyMechanical apparatusSpace heating and ventilation safety systemsStart timeControl mode
The invention relates to the technical field of air conditioners, in particular to a control method of an air conditioner in a heating mode. By adoption of the control method of the air conditioner inthe heating mode, the problems of poor universality and poor user experience of an existing control method of an air conditioner are solved. The control method of the air conditioner in the heating mode comprises the steps that the outdoor environment temperature and the outdoor environment humidity are obtained; when the outdoor environment temperature is lower than or equal to a temperature threshold, the preheating time of an electric heater is calculated according to a first fitting formula; the closing speed of an expansion valve is calculated according to a second fitting formula; the advanced start time of an outdoor fan is calculated according to a third fitting formula; the frequency increase speed of a compressor is calculated according to a fourth fitting formula; the electricheater, the expansion valve and the outdoor fan are controlled to operate; and when the electric heater / expansion valve / outdoor fan meets set conditions, the frequency of the compressor is controlledto be increased at the frequency increase speed. By adoption of the control method of the air conditioner in the heating mode, the universality of the air conditioner can be improved, and the user experience is improved.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
Double-temperature air cooling refrigerator
InactiveCN106642919ASpeed up coolingAchieve coolingLighting and heating apparatusDomestic refrigeratorsCold airFrost
The invention relates to the technical field of refrigerators, and in particular relates to a double-temperature air cooling refrigerator. The double-temperature air cooling refrigerator comprises a cabinet body and a refrigeration system, wherein a door body is arranged at an opening of the cabinet body, a baffle is arranged in the cabinet body, the baffle divides the inner part of the cabinet body into a freezing chamber and a refrigerating chamber, and the freezing chamber and the refrigerating chamber are communicated by an air guide opening; the refrigeration system comprises a compressor, a condenser, a throttling device and an evaporator, which are sequentially connected in series, an accommodation cavity is arranged in the baffle, the evaporator is arranged in the accommodation cavity, a draught fan is arranged in the accommodation cavity, and an air outlet communicated with the freezing chamber is formed in one side of the accommodation cavity close to the freezing chamber. According to the double-temperature air cooling refrigerator provided by the invention, the evaporator and the draught fan for only blowing cold air to the freezing chamber and arranged between the freezing chamber and the refrigerating chamber accelerate the cooling speed of the freezing chamber, cold air is injected into the refrigerating chamber through the air guide opening so as to cool the refrigerating chamber, both of the freezing chamber and the refrigerating chamber adopt air cooling, so frost is not generated on the inner wall of the cabinet body easily, and moreover as the air flow speed is high, the temperatures in the freezing chamber and the refrigerating chamber are quite uniform.
Owner:HEFEI HUALING CO LTD +2
Preparing method of carbon nano tube array composite film and heat exchanger
ActiveCN105463404AImprove thermal conductivityWith high temperature and low temperature resistanceChemical vapor deposition coatingLaminated elementsComposite filmGas phase
The invention provides a preparing method of a carbon nano tube array composite film and a heat exchanger. The method comprises the following steps that S1, an Al2O3 film and a Fe film are sequentially deposited on a substrate of monocrystalline silicon (100) to serve as catalysts; S2, vacuum chemical vapor deposition equipment is heated to 830 DEG C to 850 DEG C, ethylene gas is led in to serve as a carbon source, and a carbon nano tube array grows under assistance of water; S3, paracyclophane is deposited on the surface of the nano tube array in a vapor manner to form an even composite film; S4, the composite film is transferred to an aluminum sheet from the substrate of the monocrystalline silicon (100), paracyclophane is deposited on the surface of the composite film in a vapor manner, and a composite film is bonded on the aluminum sheet; and S5, a paracyclophane coating on the surface of the composite film is etched to form the carbon nano tube array composite film. The prepared carbon nano tube array composite film has high temperature and low temperature resistance, corrosion resistance, heat conduction and super hydrophobicity, and therefore when a unit carries out refrigeration, heat exchanger fins are not prone to condensation; and during heating, frosting is not prone to happening, the heat exchange performance of the heat exchanger is improved, and therefore the running performance of the unit is improved.
Owner:GREE ELECTRIC APPLIANCES INC
Control method and device for improving air conditioner heating comfort and air conditioner
InactiveCN109489206AImprove heating comfortImprove heating effectMechanical apparatusSpace heating and ventilation safety systemsThermal comfortEngineering
The invention provides a control method and a device for improving air conditioner heating comfort and an air conditioner, and belongs to the technical field of air conditioners. The control method comprises the steps that a heating mode is opened, a gear signal A of an inner draught fan is received, a temperature Ta of an inner disk is detected and obtained, and a plurality of gear signals are set in the air conditioner; when the anti-cold function of the inner draught fan is closed, comparison and judgment between the temperature Ta of the inner disk and a preset temperature are carried outaccording to the received gear signal A; and then the rotate speed of the inner draught fan is controlled based on the judgment results; and different gear signals A correspond to different contrast judgments and judgment results. The device for improving the air conditioner heating comfort comprises an inner disk temperature sensing package and a controller, and the air conditioner comprises thedevice for improving the air conditioner heating comfort. According to the control method and the device for improving air conditioner heating comfort and the air conditioner, the rotate speed of theinner draught fan can be judged independently and controlled, the thermal comfort of a user is improved, and the heating comfort of the air conditioner is improved.
Owner:AUX AIR CONDITIONING LTD BY SHARE LTD
Three-door remains refrigerated cabinet
InactiveCN101579281ANot easy to frostImprove cooling effectLighting and heating apparatusDomestic refrigeratorsEngineeringRefrigeration
The invention relates to refrigerated equipment, in particular to a three-door remains refrigerated cabinet which comprises a cabinet body, a compressor, refrigerated tubes, and the like. The three-door remains refrigerated cabinet is characterized in that the top of the cabinet body is provided with a box body, an inner cavity of the box body is connected with an inner cavity of the cabinet body by air vents, and the refrigerated tubes are coiled in the box body. The invention has good refrigeration effect, the inner wall of the cabinet body is hardly frosted, and the operation is convenient.
Owner:丁云波
Air conditioner control method and air conditioner
ActiveCN107062547ANot easy to frostImprove heating effectMechanical apparatusSpace heating and ventilation safety systemsProduct gasHeating effect
The invention discloses an air conditioner control method and an air conditioner. The air conditioner comprises a compressor, a liquid storage device and a heat preservation pipe; an outlet of the liquid storage device is connected with an air suction opening of the compressor, one end of the heat preservation pipe covers the periphery of the compressor, and the other end of the heat preservation pipe faces the liquid storage device; a fan is installed on the heat preservation pipe; and the control method includes the steps that in the heating running process, the indoor environment temperature T0 and the liquid storage device temperature T1 are collected; and the fan is controlled to run according to the indoor environment temperature T0 and the liquid storage device temperature T1 to drive air in the heat preservation pipe to blow to the liquid storage device, air flow blowing from the compressor to the liquid storage device is formed in the heat preservation pipe, heat generated in the compressor running process is conveyed to the liquid storage device, the liquid storage device is heated and is not prone to frosting in the thing process, and the heating effect is improved.
Owner:合肥海尔空调电子有限公司 +2
Full-indoor air conditioner for introducing fresh air in cold region
InactiveCN108758808AIncrease heating capacityNot easy to frostEnergy recovery in ventilation and heatingFluid heatersCold areaIndoor air
The invention discloses a full-indoor air conditioner for introducing fresh air in a cold region. The full-indoor air conditioner comprises a fresh air opening, an air inlet, an air supply fan, a first exhaust opening, a first exhaust fan, a ceiling air pipe, an indoor heat exchanger, a compressor, a four-way reversing valve, a throttling device, an in-pipe heat exchanger and a second exhaust opening. The in-pipe heat exchanger, the throttling device, the indoor heat exchanger and the four-way reversing valve are sequentially connected to constitute a heat pump circulating system. The compressor is further connected with the four-way reversing valve. The ceiling air pipe is arranged in an air conditioner room, and the two ends of the ceiling air pipe are correspondingly connected with theair inlet and the second exhaust opening which are formed outside the air conditioner room. The air inlet is internally provided with the air supply fan. The compressor, the four-way reversing valve and the in-pipe heat exchanger are arranged in a heat exchange pipe section of the ceiling air pipe. Compared with the prior art, the full-indoor air conditioner can be simple in structure, still operates efficiently in the cold region at the temperature of minus 15 DEG C, and is not liable to frost and low in cost.
Owner:ZHEJIANG SCI-TECH UNIV
Five-door air-cooled refrigerator
InactiveCN105627670AIncrease humidityImprove the effect of freezing and keeping freshLighting and heating apparatusDomestic refrigeratorsEngineeringRefrigerated temperature
The invention discloses a five-door air-cooled refrigerator and relates to the technical field of refrigerators. The defect that freezing chambers of refrigerators are small in capacity and cannot store large food is overcome through the five-door air-cooled refrigerator. The five-door air-cooled refrigerator comprises a refrigerator body. A cold storage area, a temperature varying area and a freezing area are sequentially arranged in the refrigerator body from top to bottom. The temperature adjusting range of the temperature varying area is from minus 18 DEG C to 5 DEG C. A through air duct is arranged in the cold storage area, the temperature varying area and the freezing area. An electric appliance box is arranged on the top of the outer side of the refrigerator body. A French door type structure is adopted by the cold storage area, and an auxiliary evaporator is arranged in the cold storage area. A drawer type structure is adopted by the temperature varying area. A French door type structure is adopted by the freezing area, and an evaporator and a rotating fan are arranged in the freezing area. The freezing area comprises a left freezing region and a right freezing region, and the left freezing region and the right freezing region are mutually independent and are both of a drawer type structure. The temperature varying area and the freezing area are each internally provided with an adsorption liner or an injection molding liner. A middle barrier layer is arranged between the temperature varying area and the freezing area, and the temperature varying area, the freezing area and the middle barrier layer are foamed overall.
Owner:AUCMA
Frost-less air-source heat pump hot water unit and proportional-integral-differential control method for same
InactiveCN103245151BExtended service lifeSmooth and continuous adjustmentFluid heatersCorrosion preventionProportional integral differentialEngineering
The invention discloses a frost-less air-source heat pump hot water unit and a proportional-integral-differential control method for the same. The proportional-integral-differential control method includes performing computation according to received air temperature and humidity parameters, received air pressure parameters and received surface temperature parameters of an evaporator when outdoor temperature parameters which are transmitted by a temperature and humidity sensor and are received by a computation controller are lower than 0 DEG C, controlling the opening of an electronic expansion valve according to a computation result and regulating the surface temperature of the evaporator by means of increasing or reducing the opening of the electronic expansion valve so that the surface temperature of the evaporator is constantly higher than a frost formation point; and enabling a silicon-controlled power regulator to judge a suction superheat degree of a compressor according to received suction temperature and suction pressure of the compressor, increasing or reducing the power of an electric heater and maintaining that the suction superheat degree of the compressor only varies within a set value range. The frost-less air-source heat pump hot water unit and the proportional-integral-differential control method have the advantage that adjustment for the opening of the electronic expansion valve is matched with adjustment for the power of the electronic heater, so that the purpose of maintaining safe and efficient running of a system is achieved.
Owner:NANJING NORMAL UNIVERSITY +1
Refrigeration control method and device and refrigeration equipment
ActiveCN112283993ANot easy to frostReduce frostingMechanical apparatusCorrosion preventionElectronic expansion valveHot Temperature
The invention discloses a refrigeration control method and device and refrigeration equipment. The method comprises the steps that the actual temperature of target space is monitored; when the actualtemperature is larger than the first preset temperature, the refrigeration equipment is controlled to enter a rapid cooling mode, and the opening degree of an electronic expansion valve is controlledin the rapid cooling process so that the evaporation temperature can be maintained at the second preset temperature; and when the actual temperature is smaller than or equal to the first preset temperature, the opening degree of the electronic expansion valve is controlled so that the evaporation temperature can be larger than the return air dew point temperature. Rapid cooling refrigeration is carried out under the high-temperature working condition, it is guaranteed that the evaporation temperature is kept at the second preset temperature without frosting, the evaporation temperature is controlled to be larger than the return air dew point temperature under the low-temperature working condition, frosting is not likely to happen, meanwhile, the dew point temperature can be reduced throughrapid cooling refrigeration, so that the condition that the evaporation temperature is larger than the return air dew point temperature can be met more easily under the low-temperature working condition, frosting of the evaporator in the refrigerating process is effectively reduced, the efficient refrigerating time is prolonged, frequent defrosting is avoided, and the energy efficiency and reliability are improved.
Owner:GREE ELECTRIC APPLIANCES INC
Defrosting method and device for heat pump equipment and hot water unit
ActiveCN113639491ANot easy to frostIncrease evaporating pressureMechanical apparatusCorrosion preventionProcess engineeringRefrigeration
The invention relates to the technical field of heat pump equipment, and discloses a defrosting method for the heat pump equipment. The defrosting method for the heat pump equipment comprises the steps that under the condition that an outdoor unit heat exchanger of the heat pump equipment is in a refrigeration mode, the temperature of the outdoor unit heat exchanger is obtained; under the condition that the temperature of the outdoor unit heat exchanger is smaller than or equal to a set frosting temperature threshold value, an air supply valve is opened; and under the condition that the temperature of the outdoor unit heat exchanger is larger than or equal to a set defrosting temperature threshold value, the air supply valve is closed. By the adoption of the defrosting method for the heat pump equipment, the defrosting effect can be achieved without switching a four-way valve, and the service life of the four-way valve is prolonged. The invention further discloses a defrosting device for the heat pump equipment and a hot water unit.
Owner:QINGDAO HAIER AIR CONDITIONING ELECTRONICS CO LTD +2
Fruit-flavored dried sweet potatoes and processing method thereof
InactiveCN107950945AIncrease the way of deep processingSimple and fast operationNatural extract food ingredientsFood ingredient as mouthfeel improving agentFragariaLicorice roots
The invention discloses fruit-flavored dried sweet potatoes. The fruit-flavored dried sweet potatoes are made from the following raw materials in parts by weight: 80-90 parts of sweet potatoes, 10-15parts of melon seed kernels, 6-12 parts of sesame seeds, 15-20 parts of corn flour, 5-10 parts of apples, 2-5 parts of strawberries, 3-6 parts of oranges, 1-3 parts of carrots, 2-5 parts of semen cassiae, 3-6 parts of licorice roots, 1-4 parts of malt, 1-3 parts of Chinese wolfberry fruits, 1-3 parts of herba rhodiolae, 2-5 parts of lily bulbs, 8-12 parts of maltose, 5-10 parts of fresh milk and 4-6 parts of yeast. According to the fruit-flavored dried sweet potatoes provided by the invention, the sweet potatoes are used as main raw materials, the melon seeds, the sesame seeds, the corn flour,the apples, the strawberries, the oranges, the carrots and various traditional Chinese medicines are also added, so that the fruit-flavored dried sweet potatoes are rich in nutrition, rich in fragrance, fragrant, crispy and tasteful, and bright in color. A deep processing way of the sweet potatoes is increased, and the economic returns are increased. The sweet potatoes are sterilized and cooked,then the cooked sweet potatoes and traditional Chinese medicines are mixed and mashed, through fermentation with the yeast, the nutrients and the aromatic taste are added, the function of the stomachand the intestine is coordinated, the uptake and the utilization are promoted, and the health care function is strengthened.
Owner:桐城市天地泰农业科技有限公司
Door body assembly and refrigeration device
InactiveCN109737678AReduce the temperatureAvoid blockingLighting and heating apparatusDomestic refrigeratorsRefrigerationCooling capacity
The invention provides a door body assembly and a refrigeration device. The door body assembly comprises a body, an evaporator and a draught fan, wherein the body is provided with a containing cavityinternally provided with an air flue; the evaporator is arranged in the containing cavity; and the draught fan is arranged in the containing cavity and is opposite to the evaporator. Air blown out through the draught fan is discharged into a box of the refrigeration device through the evaporator and the air flue. According to the provided door body assembly, the body is provided with the containing cavity, the draught fan, the evaporator and the air flue are all arranged in the containing cavity, and the evaporator absorbs heat during work, so that the temperature of air around the evaporatoris reduced. When air blown out through the draught fan passes through the evaporator, cool air is formed, and the effect of refrigerating objects in the refrigeration device is achieved. Meanwhile, the air blown out through the draught fan is discharged into the box of the refrigeration device through the evaporator and the air flue, the air flue is prevented from being stopped by the objects in the box, accordingly, effective circulation of cool air in the box is guaranteed, the cooling capacity at various positions in the box is more uniform, and the refrigeration effect of the refrigerationdevice is improved.
Owner:HEFEI HUALING CO LTD +2
Total heat source heat pump system
InactiveCN112797667ASmall temperature differenceReduce energy consumptionMechanical apparatusEvaporators/condensersGraphene coatingVapor–liquid separator
The invention provides a total heat source heat pump system, and relates to the field of heat pumps. The total heat source heat pump system comprises a compressor, a four-way valve, a condenser, a liquid storage device, an economizer, a throttling valve, an evaporator, a gas-liquid separator, an economizer throttling valve, an energy module, a one-way valve and a solution pump. The energy module of the total heat source heat pump system adopts a large-flow small-temperature-difference design, the temperature difference between a solution and air is small, frosting is not prone to occurring, frequent defrosting is not needed, the energy consumption is small, the efficiency is high, the surface of a heat exchanger is made of graphene coating, and the heat exchange efficiency is high; and the surface density is high, water is not easy to stick, and frosting is not easy, the evaporator adopts an overflow type design, a refrigerant and the solution are subjected to sufficient heat exchange, the heat exchanger is fully utilized, the evaporation is uniform, and the efficiency is high.
Owner:青岛鑫岩人工环境科技有限公司
Air guide device capable of dissipating heat of storage battery during running of battery car
InactiveCN112319244AImprove cooling effectTake away in timePropulsion by batteries/cellsVehicular energy storageEngineeringMechanical engineering
Owner:天长市万科电器配件厂
Natural sound-proof ventilator
PendingCN111503807ANot easy to damageEasy to replaceLighting and heating apparatusVentilation arrangementVentilation volumeDust control
The invention discloses a natural sound-proof ventilator. The natural sound-proof ventilator comprises a housing, a sound-proof component A, a sound-proof component B, and a sound-proof component C; the sound-proof component A is fixed at the upper right corner of the housing; the sound-proof component C is fixed on the bottom of the housing; the sound-proof component B is fixed around the diagonal line at the lower left corner of the housing; and the sound-proof member A, the sound-proof member B and the sound-proof member C form a "Z"-shaped ventilation channel. The natural sound-proof ventilators with special noise reduction design inside is of a "Z"-shaped cross-section structure, so that sound can be reduced effectively, the ventilation volume is adjusted automatically, the heat insulation and cold protection effects are significant, and the natural sound-proof ventilator is not likely to form frost when being used in extremely cold areas; indoor front housing components can be opened together with a sound-absorbing inner cavity to facilitate regular cleaning and replacement of a dust removal net in the cavity.
Owner:重庆恒鼎泰环境科技有限公司
Variable-frequency energy-saving mute refrigerator
PendingCN112594998ANot easy to inhaleNot easy to frostLighting and heating apparatusDomestic refrigeratorsEngineeringMechanical engineering
The invention relates to the field of refrigerators, in particular to a variable-frequency energy-saving mute refrigerator. A variable-frequency power supply is input to a compressor through a variable-frequency main control device, rotating speed of the compressor is automatically adjusted according to the temperature in a box body and actual conditions of all device parameters, and therefore a whole variable-frequency refrigerating system can save electricity by 30% or above compared with the prior art. A variable-speed evaporator fan can be controlled by the variable-frequency main controldevice, the evaporator fan operates at a low speed to preserve heat in the constant-temperature process in a cabinet, and external hot air is not easily sucked into the cabinet due to low-speed operation of the fan when the cabinet door of the refrigerator is opened, so that the energy consumption is reduced, and the system is not prone to frosting. A sound insulation box wrapping the compressor is arranged in a refrigerating machine bin, and the sound insulation box can greatly reduce noise generated when the refrigerator works; and during operation, a user does not feel loud, and the advantages are obvious compared with similar products.
Owner:林彩云
Outdoor parallel flow heat exchanger for heat pump air conditioner
PendingCN108645243AEasy to return oilExtend your lifeStationary conduit assembliesPlate heat exchangerEngineering
The invention discloses an outdoor parallel flow heat exchanger for a heat pump air conditioner. The outdoor parallel flow heat exchanger comprises a blocking piece (6), a first flow guide separationpiece (8) and a second flow guide separation piece (9), a hole penetrating separation piece (10) is inserted into an upper flow collecting pipe (7), and the first flow guide separation piece (8), thesecond flow guide separation piece (9) and the blocking piece (6) are sequentially inserted into a lower flow collecting pipe (1); the upper flow collecting pipe (7) and the lower flow collecting pipe(1) which are assembled are placed on the left side and the right side of a core assembling machine correspondingly, then a protecting plate (5), a fin (3) and a multi-channel flat pipe (2) are arranged on the core assembling machine in sequence, the multi-channel flat pipe (2) is inserted into the upper flow collecting pipe (7) and the lower flow collecting pipe (1) through the core assembling machine, and moreover, an inlet pipe (11) and an outlet pipe (4) are fixed on a core body through spot welding. According to the outdoor parallel flow heat exchanger, the flow guide separation pieces are adopted, so that flowing of a refrigerant is uniform, and then the heat exchange efficiency is improved; due to the adoption of the non-open-window fin, when the parallel flow heat exchanger reflects the function of an evaporator, frosting is not prone to occurrence, and then the heat exchange efficiency is improved.
Owner:JIANGXI XINDIAN AUTOMOBILE AIR CONDITIONING SYST
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