54results about How to "Stable temperature difference" patented technology

The invention discloses a testing apparatus and testing method of a thermoelectric conversion efficiency of a thermoelectric module group. A heating bench protection fence encircles the side surface of an electric heating bench; a measuring assembly for installing a thermoelectric module group is installed on the electric heating bench; and a compression assembly for compressing the measuring assembly is fixed on upper sides of support rods. An outer cover is arranged on a base plate. A gap of internal space between the base plate and the outer cover is filled with a thermal insulation material. The thermoelectric module group is heated and a cold end of the thermoelectric module group is cooled. The compression device applies pressures to guarantee the good contact among all contact surfaces, so that a stable temperature difference between the two ends of the thermoelectric module group is kept and an electromotive force is generated. With a peripheral circuit, calculation is carried out based on temperature values measured by an upper standard measuring block and a lower standard measuring block, thereby obtaining input powers of the thermoelectric module group on different conditions and a heat flow rate inputted into a hot end and thus obtaining a conversion efficiency. According to the invention, various thermoelectric performance parameters of the thermoelectric module group under different pressures and different temperature differences can be tested comprehensively and thus a basis is provided for evaluating the performance of the thermoelectric module group comprehensively.

The invention discloses a high-molecular material 3D printing device applying nanosecond lasers to accurately control temperatures. The device includes two laser devices, a beam expander, a light beam scanning controller, a preheating chamber, a powder feeding device, a working platform, two temperature sensors and a control module. Through use of the device and in a laser sintering type printing technological process, energy emitted by the laser devices in unit time can be accurately controlled through controlling increase or decrease of the repetition frequency of pulses outputted by a pulse laser, so that a high-molecular material powder is allowed to maintain in a sufficient accuracy range in preheating and sintering processes, the temperature gradient of the interior of the material is uniformly distributed, defects of the interior of a molded workpiece are greatly reduced, moreover, the workpiece molding quality is better, and higher machining accuracy is maintained.

A technology for preparing nano-metallic oxide powder with a DC (direct-current) plasma method comprises steps as follows: a high-purity metal block is put into a smelting furnace and is melted, and a melt delivery tube connected with the smelting furnace is heated; a reaction chamber is subjected to vacuum pumping until the pressure reaches 2-10 MPa, cooling air is introduced into the reaction chamber, and cooling water is introduced into a reactor interlayer arranged in the reaction chamber; an arc plasma gasification system power source of a reactor is switched on, gasification current is adjusted to 10-2,000 A, and voltage is adjusted to 5-400 V; inert gas is introduced into the metal melt, the melt delivery tube is adopted for flow guidance, the gasification reaction is performed, and metal jet is formed; the metal jet is gasified under the action of arc plasma so as to form atomic clusters, the atomic clusters are subjected to a reaction with oxygen, oxide nanoparticles are formed, is condensed under cold-air negative pressure and enters a powder collecting chamber with cold air flow, and the nano-metallic oxide powder is obtained. The technology is simple, does not need a plasma source and has high yield, and the prepared nano-metallic oxide powder is not prone to agglomeration, is high in purity and facilitates large-scale production.

The invention relates to the technical field of clothes nursing, and discloses an ironing machine supplementing water rapidly and conveniently. The ironing machine comprises an ironing machine body, abase, and a large water tank. The base is provided with a groove. The ironing machine body is internally provided with a small water tank, a steam generation assembly, and a pump body. A water absorption pipe is communicated between the pump body and the small water tank. The pump body is communicated with a water outlet pipe. The large water tank is provided with a water supplementing cover. Thewater supplementing cover is provided with a water outlet. The water outlet is provided with a valve body. The base is internally provided with a first water supplementing joint. The base is providedwith a trench. A water guiding pipe is communicated between the trench and the first water supplementing joint. The ironing machine body is provided with a second water supplementing joint. One end of the water supplementing joint is communicated with the small water tank. When the ironing machine body is placed in the groove, the first water supplementing joint and the second water supplementingjoint are abutted and communicated, and water in the large water tank flows into the small water tank through the water guiding pipe. When the ironing machine body is separated from the groove, the first water supplementing joint and the second water supplementing joint are separated and communication is stopped. The ironing machine is advantaged by convenient and rapid water supplement.

Various types of automobile exhaust waste heat generation devices at present are complex in process, high in cost, low in integration level, large in size and low in heat-electricity conversion efficiency. The invention discloses a thermopile which is high in integration level, simple in structure, low in cost and high in reliability; the invention also discloses an automobile exhaust waste heat generation and refrigeration device employing the thermopile as a core part for generation and refrigeration. P-type thermocouple arms formed in the shape of a rectangular cylinder and N-type thermocouple arms are arranged in a staggered manner. A heat-insulation and insulting film material is arranged between the adjacent thermocouple arms in an attaching manner for isolation, so that the convection of air is eliminated, the defect of the reduction of the temperature difference between cold and hot surfaces caused by radiation is overcome, and the heat-electricity conversion efficiency is improved. The electric connection between the thermocouple arms is achieved through flexible heat-conduction and electric-conduction materials, so that a thermal stress is alleviated, the adverse effect of the thermal stress on a product is eliminated, and the problem that the reliability and the service life of the product are affected seriously, caused by the deformation and cracking of the thermopile and falling of welding spots between the thermocouple arms which are caused by the thermal stress, is solved.

The present invention discloses a thermoelectricity module group generation performance test platform. The thermoelectricity module group generation performance test platform comprises a gland nut, a pressure bar, a pressure bar support block, a step support shaft, a water cooling block, a paster thermocouple, a conductive electrode, a thermoelectricity block body, a ceramic chip, a protection fence, an electric heating platform, a screw, a heating platform support plate, a pressure sensor and a support base plate. The thermoelectricity module group generation performance test platform is able to heat the lower end of a thermoelectricity module group and control the heating end to heat temperature, perform water-cooling cooling of the upper end of the thermoelectricity module group, and compress the thermoelectricity module group to ensure that the electric heating platform and the thermoelectricity module group fully contact with the water cooling block to allow the upper end and the lower end of the thermoelectricity module group to form a stable temperature difference and generate an electromotive force. The thermoelectricity module group generation performance test platform is able to accurately test number values of the internal resistance, the output voltage, the current and the output power of a thermoelectricity module group in the conditions of different temperature differences, different external applied pressures and different external loads, and has an important guidance meaning for the manufacture technology optimization and the usage environment of the thermoelectricity module group such as usage temperature range, the installation pressure and the external load.

According to a motion drag reduction shell of anunmanned underwater vehicle, the structure is simple and light, the maneuverability is extremely high, and a good drag reduction effect can be achieved in various complex marine environments; silicone rubber has excellent cold resistance, heat resistance and aging resistance and good thermal conductivity, and can adapt to various marine working environments; a solution in the interlayer of the shell comes from external seawater, and a liquid storage container and an additional solution do not need to be additionally arranged in the shell, so that space and cost are saved; the specific heat capacity of seawater is large, it can be guaranteed that the stable temperature difference between the surface of the shell and surrounding seawater is kept for a long time after heating, and the filling solution is extremely high in cost performance; through surface drag reduction, strict size limitation is avoided, the original design appearance of a navigation body cannot be damaged through surface drag reduction, the hydrodynamic characteristic can be guaranteed, and therefore the surface drag reduction device is suitable for most unmanned underwater vehicles.

The invention discloses a gem-grade large monocrystal diamond multi-cavity composite structure, and a preparation method and an application thereof. The multi-cavity composite structure comprises a pressure transfer block provided with an assembly cavity, wherein an insulator is arranged in the assembly cavity; conductive plug assemblies are symmetrically arranged at the upper end and the lower end of the insulator; the insulator is provided with a plurality of cylindrical synthesis cavities; a large monocrystal growth assembly is arranged in each cylindrical synthesis cavity; heating tubes are arranged in the cylindrical synthesis cavities; a crystal bed, a catalyst sheet, a carbon source, a pressure transfer sheet and an insulating tube are sequentially arranged in each cylindrical synthesis cavity from bottom to top; each crystal bed, each catalyst sheet, each carbon source and each pressure transfer sheet are sequentially arranged in the corresponding cylindrical synthesis cavity from bottom to top; each insulating tube coats the peripheries of the corresponding carbon source and catalyst sheet and is arranged between the corresponding pressure transfer sheet and crystal bed; each heating tube coats the peripheries of the corresponding pressure transfer sheet, insulating tube and crystal bed; an assembly synthesis block is arranged into the assembly cavity; and the conductive plug assemblies are symmetrically arranged at two sides of the assembly synthesis block to obtain a multi-cavity synthesis structure. By adopting the gem-grade large monocrystal diamond multi-cavity composite structure, stable high-quality synthesis of 1-5carat large monocrystal can be achieved.

The invention relates to a double-well closed circular downhole thermoelectric power generation system and method. The system includes an A shaft, a B shaft, a fluid circulation module and an electrical energy delivery module, wherein the A shaft and the B shaft penetrate through a same stratum at the same time. The A shaft includes an A shaft casing pipe, an A shaft oil tube and an A shaft thermoelectric power generation module. The B shaft includes a B shaft casing pipe, a B shaft oil tube and a B shaft thermoelectric power generation module. Perforation segments are arranged on the A shaftcasing pipe and the B shaft casing pipe respectively. An A shaft oil jacket annular flow passage is formed in the space between the A shaft casing pipe and the A shaft thermoelectric power generationmodule; an A shaft oil tube flow passage is formed in the internal space of the A shaft oil tube. A B shaft oil jacket annular flow passage is formed in the space between the B shaft casing pipe and the B shaft oil tube; a B shaft oil tube flow passage is formed in the internal space of the B shaft oil tube on the inner side of the B shaft thermoelectric power generation module. According to the system and method, stable power supply can be provided, medium and low temperature geothermal resources can be fully utilized, and subsequent utilization of produced fluid cannot be affected.

The invention provides a multi-grade heat pump type double-pot salt melting and energy storage power generation system. The multi-grade heat pump type double-pot salt melting and energy storage powergeneration system comprises: a high-temperature salt melting pot, a low-temperature salt melting pot, a high-temperature antifreeze fluid pot, a low-temperature antifreeze fluid pot, a compressor, a first heat pump, a low-temperature salt melting pump, a high-temperature salt melting pump, a turbine, a second heat pump, a high-temperature antifreeze fluid pump, a low-temperature antifreeze fluid pump, a first heat exchanger, a second heat exchanger and a power generator; and electric energy and heat energy can be transformed into each other through selectively opening one or more of the high-temperature salt melting pot, the low-temperature salt melting pot, the high-temperature antifreeze fluid pot, the low-temperature antifreeze fluid pot, the compressor, the first heat pump, the low-temperature salt melting pump, the high-temperature salt melting pump, the turbine, the second heat pump, the high-temperature antifreeze fluid pump, the low-temperature antifreeze fluid pump, the firstheat exchanger, the second heat exchanger and the power generator. The multi-grade heat pump type double-pot salt melting and energy storage power generation system provided by the invention can realize stable output of renewable energy source power including wind power or photovoltaic power generation and the like, has the effect of balancing power supply and demand and can realize large-scale energy storage and realize the advantages of energy storage and peak regulation; and the problem of the energy storage of renewable energy sources is solved.

The invention relates to a multi-stage thermoelectric module with a phase change energy storage layer, which comprises a high-temperature layer, a middle-temperature layer and a low-temperature layer.Energy storage layers made of phase change material are located between the high-temperature layer, the middle-temperature layer and a low-temperature layer. The temperature difference between the hot and cold junctions of the thermoelectric module is stabilized by the heat absorption and heat release during the phase transition of the phase change material, and the temperature of each thermoelectric material is adjusted to be in the temperature range of its optimal performance to improve the overall thermoelectric conversion efficiency of the thermoelectric module.

The invention discloses a micro solder joint thermal migration test structure and a production method thereof, and belongs to the field of production and connection of materials. A solder pad for thermal migration test has a raised shape, is adhered to a base plate through a double-faced adhesive tape, a solder paste is filled between two solder pads, the two solder pads are welded to form a solder joint, and the solder joint is polished to form a solder joint for thermal migration test. One ends of the solder pads of the solder joint are heated by ceramic heating pieces, a thermocouple monitors the ceramic heating pieces, a controller is used to control the temperature, and the other ends of the solder pads keep a room temperature state, so two ends of the solder joint have a temperaturedifference, and stable temperature gradient is realized. The temperature controller is arranged to control the temperature of one ends of the solder point solder pads and realize the accurate controlof the temperature difference between two ends of the solder point, so two sides of the solder joint have the controllable temperature gradient, the problem of difficult realization and control of thetemperature gradient in the thermal migration test process of the micro-size solder joint is solved, reliable solder joint thermal migration data is obtained on the premise of the controllable solderjoint temperature gradient, and is evaluated.

The invention discloses a heat exchanger system for generating and strengthening negative pressure. The heat exchanger system comprises a waste gas flow equalizing pipe, connection branch pipes, guideblade fixing plates, waste gas channels and nozzles; the multiple guide blade fixing plates are installed around the same center of a circle in the circumferential direction and internally comprise the waste gas channels, industrial waste gas is guided into the waste gas flow equalizing pipe, thus, the waste gas uniformly flows into the waste gas channels in the guide blade fixing plates throughthe uniformly-distributed connection branch pipes at the same flow speed, the waste gas exchanges heat with external hot gas flow in the process of circulating in the waste gas channels, and finally,the waste gas is injected out through the waste gas nozzles in the tangential direction of waste gas outlets. The guide blade fixing plates of the heat exchanger system have the function of flow guiding and the function of a heat exchanger, the large heat exchange area and the long heat exchange time are ensured to the greatest extent through the waste gas channels in the guide blade fixing plates, by heating the external gas flowing through the system, the larger and stable temperature difference is provided, and higher negative pressure and the stable negative pressure zone are formed.

The invention relates to an industrial cold and hot balance unit system and a control method of the industrial cold and hot balance unit system, and relates to an energy recycling system for a combined heating and refrigeration system and a control method of the energy recycling system. The industrial cold and hot balance unit system comprises a cold and hot balance unit, a cold air subsystem, a hot air subsystem, a hot water subsystem and a control device, wherein the cold and hot balance unit comprises a refrigerant circulation loop with the cold and hot balance configuration and a refrigerant circulation loop with the heat pump configuration, a control device has control over configuration switching of the refrigerant circulation loops through an electric three-way valve, a hot water condenser and a heating medium water pump form a heating medium water circulation loop sequentially through a heat storage water tank and a combined air cabinet hot water coil pipe, and a cold water evaporator and a refrigerant water pump form a refrigerant water circulation loop through a combined air cabinet cold water coil pipe. The cold and hot balance unit is controlled through the control device, balance transfer of cooling and heating loads is achieved, the cooling and heating load requirement and the temperature and humidity requirement of workshops are met, effective balance of the cooling and heating loads is ensured, the equipment utilization rate is high, the cost is low, energy is effectively utilized, and energy is sufficiently saved.

The invention discloses a method for planting collybia radicata in winter. At an earlier stage, through scientific and sterile mycelium culture, excellent hyphae are obtained, then after cultivation,a strict management method is implemented, wherein through accurate temperature and humidity control, the best growth conditions of mushrooms are guaranteed, meanwhile, the feature of low temperaturein winter is considered, in combination with kinds of anti-cold procedures which include laying and scattering of quick lime for increase in temperature and further include steam pipeline laying whichcan provide sufficient heat energy for the interior of a mushroom greenhouse at night, meanwhile, air humidity is kept, a warm-keeping quilt covers the exterior of the greenhouse additionally to ensure the stability of temperature difference at night in winter jointly, in daytime, according to sunlight, black thin films are set up to improve the effect of heat absorbing and realize sun shieldingappropriately to keep moisture on the surfaces of mushroom beds, and all the procedures jointly guarantee that collybia radicata grow well in winter; powerful technical supports are provided for anti-season planting of collybia radicata, meanwhile, the all-the-year demands for collybia radicata in the market are met, and the economic benefits of production families are increased.

The invention discloses a crude neon and helium extracting device suitable for force-exhaust nitrogen in an air separation column and an extracting method of the crude neon and helium extracting device. A circulating pipeline is connected to a poor neon and helium column and the bottom of an upper column; a liquid nitrogen pipeline, a pressure nitrogen pipeline and a liquid-air pipeline are connected to a lower column and the poor neon and helium column; a poor neon and helium gas pipeline is connected between the crude neon and helium column and the poor neon and helium column; a main pipeline communicates with the top of the crude neon and helium column; a crude neon and helium gas collecting opening is also formed in the crude neon and helium column; liquid nitrogen and pressure nitrogen are introduced into the poor neon and helium column for extracting neon and helium components; the poor neon and helium column obtains the poor neon and helium gas and pressure nitrogen product gas;liquid nitrogen at the bottom of the poor neon and helium column enters the upper column and the crude neon ad helium column respectively; the poor neon and helium gas is transmitted into the crude neon and helium column for further rectification, and crude neon and helium gas is obtained in the crude neon and helium column; and the liquid nitrogen obtained in the crude neon and helium column istransported back to the poor neon and helium column for further rectification. According to the crude neon and helium extracting device disclosed by the invention, the total extraction rate of the neon and helium in the air separation column is as high as 90% or above, the pressure, the yield and the purity of the pressure nitrogen are not influenced, the heat load of a main cooling column is shared, and the air separation energy consumption is reduced.

The invention provides semiconductor growth equipment and a working method thereof. The semiconductor growth equipment comprises a reaction chamber, a heating base, a first spraying unit and a second spraying unit; the heating base is located in the reaction chamber and comprises a first heating area and a second heating area located on the periphery of the side portion of the first heating area, the heating temperature of the first heating area is larger than that of the second heating area, and the surface of the second heating area is suitable for containing a substrate; the first spraying unit and the second spraying unit are located at the top of the reaction chamber, the first spraying unit is located above the first heating area, and the second spraying unit is located above the second heating area; the first spraying unit at least comprises a first pipeline, a first gas source is suitable for being introduced into the first pipeline, the second spraying unit at least comprises a second pipeline, a second gas source is suitable for being introduced into the second pipeline, and the decomposition temperature of the first gas source is higher than that of the second gas source. The optimal growth temperature interval of the semiconductor growth equipment is reduced, and the application range is expanded.

The invention relates to a quasi-differential isothermal heat treatment method of a large-size rolling roller and belongs to the technical field of heat treatment. The treatment method comprises the steps that a suitable chamber type electric resistance furnace is selected according to the size and the requirement of the rolling roller needing to be treated; after ceramic fiber is utilized for protecting the roller neck of the rolling roller, the rolling roller is fixed to a supporting pad workpiece in the chamber type electric resistance furnace; firstly, heating is carried out according to the first preset temperature rising rate until the first stage temperature is reached, and heat is preserved for first preset time at the first stage temperature; then heating is carried out accordingto the second preset temperature rising rate, after the quenching temperature is reached, the heat is preserved for second preset time, and then the rolling roller is discharged from a furnace; and after the rolling roller is discharged from the furnace, mist spraying cooling is carried out to the second stage temperature within 10 min, after spraying quenching is finished, blowing cooling is carried out with the first preset wind pressure, and after temperature return is finished and the temperature does not exceed the third stage temperature, the rolling roller can be loaded into the furnaceand tempered. According to the method, after quasi-differential isothermal heat treatment is carried out on the large-size rolling roller, while quenching of the surface of the roller body is completed at a certain thickness, the roller neck and the core portion still have a certain toughness treatment effect.

The invention discloses a novel generating set based on a heat accumulator. The heat accumulator is combined with the thermoelectric power generation technology. The novel generating set comprises a heat exchange tube water inlet, a heat exchange tube water outlet, a heat-conducting tube, a heat-collecting plate, a heat-conducting insulator, a semiconductor thermoelectric power generation module, a cooling fin, a heat sink, a voltage stabilizer and a transformer, wherein a heat-conducting fin and the heat-collecting plate are located inside the heat accumulator; the cooling fin and the heat sink are located in a heat exchange tube; the semiconductor thermoelectric power generation module is located between the heat-collecting plate and the heat sink and embedded in the wall of the heat exchange tube; an anode, a cathode and the voltage stabilizer are connected to form a circuit by use of leads, and finally, the power is output via the transformer. The novel generating set is located at the water inlet end of the heat exchange tube inside the heat accumulator, and therefore, the cold end of the semiconductor thermoelectric power generation module can be cooled continuously and stably by use of cold water just flowing into the heat accumulator via the heat exchange tube so as to create conditions for effective working of the power generation module.

The invention discloses a waste heat energy recovery device for an underwater vehicle. An inner connection layer is arranged outside an underwater vehicle high-temperature shell, an outer connection layer is arranged outside the inner connection layer, a thermoelectric module is stuck on the outer surface, between the inner connection layer and the outer connection layer, of the inner connection layer, and a heat insulating layer fills a position between the inner connection layer and the outer connection layer. The thermoelectric module is utilized to be stuck at a position between the outside of the underwater vehicle high-temperature shell and the outer connection layer, then isolation is performed by virtue of the heat insulating layer, an underwater vehicle shell is taken as a high temperature surface, heat is conducted to a heat surface of the thermoelectric module by virtue of a connection surface, a water layer provides a low temperature surface for the thermoelectric module byvirtue of the connection surface, the thermoelectric module converts temperature difference of a high temperature end and a low temperature end into an electrical parameter and outputs the electricalparameter, a fact that a hot spot of the thermoelectric module is far away is utilized, and waste heat of the underwater vehicle is converted into electric energy to be recycled. The device disclosedby the invention is simple in structure; the thermoelectric module does not contain a moving part, thus a recovery structure is stable; and the waste heat of the vehicle is converted into the electric energy, thus energy utilization efficiency of the underwater vehicle is improved.

The invention discloses a multifunctional environment-friendly tower. The multifunctional environment-friendly tower comprises an inner-layer hollow metal pillar and an outer-layer hollow metal pillar which are coaxially arranged. The outer surface of the outer-layer hollow metal pillar is provided with a heat absorbing material layer, and a transparent heat insulation layer is further arranged outside the heat absorbing material layer. At least one semiconductor temperature difference power generation module penetrates through the inner-layer hollow metal pillar or the outer-layer hollow metal pillar to be used for temperature difference power generation. The output end of the semiconductor temperature difference power generation module is connected with the input end of a voltage stabilizing module, the output end of the voltage stabilizing module is connected with the input end of a boosting module, the positive electrode of the output end of the boosting module is connected to the outer-layer hollow metal pillar, and the negative electrode of the output end of the boosting module is connected to the inner-layer hollow metal pillar. The multifunctional environment-friendly tower has the own function and can also conduct self-power-generation, purification and dust removal, a large amount of anions are provided for surroundings, and the tower is multifunctional and environmentally friendly.

The invention relates to a control system for an internal flow field of a mesh-belt kiln. A kiln tail air inlet is arranged at the tail of a low box in a cooling section of the mesh-belt kiln, a plurality of low box suction hoods are arranged on the top wall of the low box, an upper end opening of each low box suction hood is connected with a low box branch air duct, a low box air duct electric adjusting valve is arranged in each low box branch air duct, an upper end opening of each low box branch air duct is connected into a low box main air duct, the low box main air duct is connected with a suction opening of a cooling fan, an air outlet of the cooling fan is connected into a high box main air duct, the high box main air duct is positioned above the low box and extends along the height direction of a high box, a plurality of high box air outlet hoods are arranged on the top wall of the cooling fan, an upper end opening of each high box air outlet hood is connected with a high box branch air duct, a high box air duct electric adjusting valve is arranged in each high box branch air duct, and an upper end opening of each high box branch air duct is connected with the high box main air duct. By the aid of the control system for the internal flow field of the mesh-belt kiln, the temperature in the mesh-belt kiln can be more accurately controlled, and the manufacturing quality of denitration catalysts is improved.

The embodiment of the invention discloses a thermoelectric generation device comprising a heat insulation board and a heat conduction assembly mounted on the heat insulation board. Four assembling holes are formed in the upper surface of the heat insulation board; and a thermoelectric piece is installed in each of the four assembling holes. The heat conduction assembly includes a plurality of heatconducting sheets that are connected in series to form a crawler belt shape; one end of the heat conduction assembly is connected to a heat generating source and the other end is connected with heatconducting surfaces of the four thermoelectric pieces so as to transfer the heat from the heat generating source to the heat insulation board. Besides, cold conducting surfaces of the four thermoelectric pieces are connected with a water cooling device externally, so that the temperatures of the heat conducting surfaces of the four thermoelectric pieces are higher than those of the cold conductingsurfaces and thus obvious and stable temperature differences are formed between the two sides of the four thermoelectric pieces. In addition, the embodiment of the invention also provides a power storage system comprising the thermoelectric generation device, a boosting module, a storage battery and an inverter; and the boosting module carries out boosting on the voltage generated by the thermoelectric generation device and the boosted power is stored into the storage battery, so that power supply of some electric appliances at home is realized conveniently.

The invention relates to the technical field of intelligent air conditioners, and discloses a method for controlling an air conditioner. The method comprises the steps that under the condition that a first room and a second room with heat exchange are heated or cooled at the same time, a first temperature difference value between a set temperature and a first indoor temperature and a second temperature difference value between the set temperature and a second indoor temperature are obtained; under the condition that the first temperature difference value is larger than a first temperature threshold value, a first air conditioner of the first room is controlled according to a first control strategy, and a second air conditioner of the second room is controlled according to a second control strategy; and under the condition that the first temperature difference value is smaller than or equal to the first temperature threshold value, a first air conditioner of the first room and a second air conditioner of the second room are controlled according to a third control strategy. By the adoption of the method, the stability of the indoor temperature in the heating or cooling process can be improved, and then the stability of the indoor temperatures of the two rooms reaching the set temperature is improved. The invention further discloses a device for controlling the air conditioner and the multi-split air conditioner.

The invention provides an ink supply method. The ink supply method comprises the steps that a first sensor assembly obtains first temperature information and first negative pressure information of ink and transmits the first temperature information and the first negative pressure information to a controller, and a second sensor assembly obtains second temperature information and second negative pressure information of the ink and transmits the second temperature information and the second negative pressure information to the controller; a first difference value between the first temperature information and the second temperature information is calculated, the first difference value is compared with a first preset value, if the first difference value is larger than the first preset value, the controller controls a heater to reduce the power, and if the first difference value is smaller than the first preset value, the controller controls the heater to increase the power; and a second difference value between the first negative pressure information and the second negative pressure information is calculated, the second difference value is compared with a second preset value, if the second difference value is larger than the second preset value, the controller controls a circulating pump to reduce the power, and if the second difference value is smaller than the second preset value, the controller controls the circulating pump to increase the power. According to the ink supply method, the printing quality of an ink-jet printing head can be improved, and the situations of ink interruption, line pulling and the like of the ink-jet printing head are reduced.

The invention provides an efficient water and electricity co-production device which comprises a hardware box, a water and electricity co-production chamber and a purified water storage box, a water and electricity co-production module is arranged in the water and electricity co-production chamber and comprises a plurality of water and electricity co-production units, each water and electricity co-production unit comprises a thermoelectric piece, a blue film and CS / PVA aerogel, the blue film is attached to the hot end of the thermoelectric piece, and the CS / PVA aerogel is attached to the hot end of the thermoelectric piece. The cold end of the thermoelectric piece is provided with CS / PVA aerogel, the hot end of the thermoelectric piece faces upwards, the cold end of the thermoelectric piece faces downwards, the shower nozzle sprays water to the water and electricity cogeneration module from bottom to top, the blue film absorbs solar energy, then heat energy is transmitted to the CS / PVA aerogel through the thermoelectric piece, water to be evaporated is provided for the CS / PVA aerogel in a spraying water supply mode, and the water to be evaporated is evaporated through the temperature difference between the two ends of the thermoelectric piece. Purified water and electric energy can be generated simultaneously; the jet water supply mode not only can increase the output of purified water and electric energy of the water and electricity cogeneration module, but also can solve the problems of surface salt deposition, pore channel blockage and the like of the photo-thermal material.