265results about How to "Avoid convection" patented technology

To provide an intake structure for a seat type vehicle which makes it possible to shorten the air intake path and to prevent the taken-in air from being heated with the heat of an engine. An intake structure for a seat type vehicle is provided in which an engine and a fuel tank are mounted side by side in the lateral direction of the vehicle under the occupant seats attached onto a frame. An air cleaner is arranged to the rear of the engine with an intake port for the air cleaner being provided under the occupant seats and above the fuel tank.

The invention relates to a siliceous heat-insulation composite material for a wall, which comprises base materials and water. The base materials mainly comprise closed-cell expanded perlite, cement, building gypsum, inorganic mineral substance fibers, high-viscosity attapulgite clay, redispersible rubber powder, hydroxypropyl methyl cellulose auxiliaries and a water repellent, wherein the inorganic mineral substance fibers comprise alumina silicate fibers, brucite fibers, mineral cotton fibers and the like, and when the material is used, the weight ratio of the base materials to the water is 1:1.2-1.3. The material as an amorphous powdery heat-insulation material is excellent in energy conservation, heat insulation, sound absorption, flame retardance reaching level A1, fireproofing, seismic resistance, crack control, flexibility and weatherability, does not chemically react with the wall, is high in strength and ageing resistance, avoids deformation, crack, hollowing, shedding and is the same as the wall in service life in use. The material is green, environment-friendly and non-toxic, is applicable to heat insulation of an inner wall and an outer wall made of various wall base materials, a splitting wall and heat-insulation energy-saving projects such as roofs, basements, garages, stairs, corridors, fire-fighting accesses and the like.

The invention relates to heat insulation materials, in particular to a heat-insulation film and a preparation method thereof. The heat-insulation film is in a layered structure, a film system structure of the heat-insulation film is formed by multiple layers of heat-insulation units in a compounding way, and each layer of heat insulation unit is arranged in the same direction; each layer of heat insulation unit comprises a substrate layer and an aerogel layer; the substrate layer is a polyimide or carbon fiber film, and the aerogel layer is porous silica dixide aerogel; and in addition, a high-temperature glue layer is also arranged between every two adjacent heat insulation units. The preparation method of the heat insulation film comprises the following steps: firstly, providing substrates; secondly, coating the aerogel on the single face of each substrate; thirdly, drying a semifinished product prepared in the step two into a heat-insulation unit; and fourthly, compounding multiplelayers of the heat insulation units. The invention provides the heat-insulation film which has small volume, convenient use and no environmental pollution as well as the preparation method thereof.

The invention relates to a preparation technology for an alloy mast, wherein the alloy is made from chromium, zirconium and copper. The technology comprises the following steps: adding industrial electrolytic copper into an inductive melting furnace for heating and melting, and covering the surface with graphite powder and charcoal at the same time; starting an electromagnetic stirrer for electromagnetic stirring and aided deoxidation treatment; adding a copper-chromium master alloy and zirconium wires for heating and melting after the industrial electrolytic copper is completely melted, and enabling the melt composition to be uniform by utilizing the electromagnetic stirring; then moving up the baffle between the inductive melting furnace and an inductive holding furnace so that the melt in the inductive melting furnace can be transferred into the inductive holding furnace under the action of the gravity, and covering the melt surface with the graphite powder and the charcoal; adjusting the melt temperature to 1200 DEG C to 1250 DEG C; and then starting an up-pulling system and continuously up-pulling CuCrZr alloy masts, and continuously adding new furnace burdens into the melting furnace during the up-pulling process. Under a non-vacuum condition, the technology can prepare the alloy (containing chromium, zirconium and copper) mast which is easily oxidized and difficult in adding element zirconium by utilizing the electromagnetic stirring function and through the tight coverage of a covering agent, and the technology is very simple.

An in-space-capsule 3D printing device for a microgravity environment comprises a printer, wherein a function composite closed case is arranged outside the printer, an air outlet of the printer in the function composite closed case is connected with an air inlet of an atmosphere and temperature control device, an air outlet of the atmosphere and temperature control device is connected with an air inlet of the printer in the function composite closed case, the function composite closed case of the printer is connected with a vibration reduction platform, and a printing platform is connected onto the vibration reduction platform; a heat-insulating layer capable of keeping the temperature field in the case stable is contained in the inner surface of the function composite closed case, a noise reduction layer for shielding noises produced during printing is arranged outside the heat-insulting layer, and an electromagnetic shielding layer for preventing mutual electromagnetic interference between the printer and the outside as well as a protection layer for ensuring the printer strength are arranged outside the noise reduction layer. The device is adapted to the space microgravity environment and ensured to be matched with a space navigation platform, and space manufacturing is realized.

A sealing structure for a refrigerator comprises a blocking member provided inside an air dam having a predetermined width between a refrigerator cabinet and a door liner of a door, for preventing convection in the air dam, so that convection in the air dam is prevented and thus external heat is prevented from being introduced into a storage compartment through the air dam.

The invention discloses a power-saving type notebook computer heat dissipation support. The power-saving type notebook computer heat dissipation support comprises a movable plate and a bottom plate; columnar cavities are disposed at the lower end of the bottom plate; electric telescopic rods are fixedly mounted in the columnar cavities; the lower ends of the electric telescopic rods are fixedly connected with ground feet; the movable plate is disposed at the upper end of the bottom plate and hinged to the bottom plate through a hinge part; a supporting plate is hinged to the lower end of the movable plate; the other end of the supporting plate is hinged to the upper end of a threaded sleeve ring; a hollow cavity is disposed in the movable plate, and fans are symmetrically disposed in the hollow cavity; and a temperature sensor is fixedly mounted at the upper end of a push rod and electrically connected with a control device of the fans. The power-saving type notebook computer heat dissipation support is novel in design and high in stability, the potential safety hazards of supporting of common supports are eliminated, meanwhile the phenomenon that heat is not easy to dissipate dueto air convection caused by vertical and upward blowing is effectively avoided, the computer temperature can be detected by arranging the temperature sensor, then rotating and stopping of the fans arecontrolled, the electric energy consumption is reduced, and the power-saving type notebook computer heat dissipation support meets the social development demands.

A honeycomb sandwich panel sequentially comprises an outer covering, a honeycomb core and an inner covering, grids of the honeycomb core are filled with rigid polyurethane foam, and the thickness of the rigid polyurethane foam is above 2mm. The invention also provides a making method of the honeycomb sandwich panel. The honeycomb sandwich panel has a good heat insulation performance and a high strength; and the heat insulation grade of a shelter body made by adopting the honeycomb sandwich panel reaches military standard I grade requirement. The method has the advantages of simple making technology and low cost.

The invention discloses a back-flow preventer valve in a pipeline. The back-flow preventer valve in the pipeline comprises a pipe body and valves, wherein the valves are arranged in a pipe cavity. Two valves are designed in the pipe cavity, the width of the middle parts of the valves is greater than the radius of the pipe cavity, and is 1.5-2.5 times the radius of the pipe cavity; the root parts of the valves are thicker than other parts, are arc-shaped and connected with the inner wall of the pipe cavity; free edges of the upper valve and the lower valve face towards the flow direction of the fluid; the valves are light films with elasticity and toughness; and the pipe body is transparent, and the two valves are provided with different colors. The back-flow preventer valve in the pipeline has the advantages that: 1, the two valves are simple and practical, satisfy biomechanics, and can be arranged at a plurality of positions in the same pipe body; 2, down-flow is not affected when the back-flow is prevented; 3, convection of liquid and gas in a drainage pipeline is prevented; and 4, the structure of the pipeline is not affected when the back-flow preventer valve is widely applied to any part of various pipe cavities and pipelines in medical science or non-medical life.

The invention discloses a high-temperature-resistant lightweight heat-insulating material with a dual pore structure and a preparation method thereof. The preparation method comprises the following steps: with alumina, silica and aluminosilicate powder as raw materials, adding a molding aid and a pore forming agent into the raw materials and carrying out uniform mixing under stirring; and then subjecting a mixture obtained in the previous step to extrusion molding and then to sintering so as to obtain the high-temperature-resistant lightweight heat-insulating material with the dual pore structure composed of macroscopic through hole channels and micropores, wherein a ratio of the total volume of through holes to the total volume of the micropores is 0.5-25: 1. According to the invention, through synergism of proper volumes of a micropore structure and the macroscopic through hole channels, the prepared material has improved energy conservation effect and thermal shock resistance, and substantially enhanced strength and high-temperature creep resistance while high temperature performance of the material is guaranteed.

The invention discloses a light wall partition board with addition of loofah sponge fibers; the light wall partition board is prepared from the following raw materials: desulphurization gypsum, calcium oleate, molasses, sodium silicate, sodium sulfate, graphene, trimethylolpropane trioleate, polyaluminum ferric chloride, sodium dichromate, loofah sponge, a silane coupling agent kh570, a nano mica powder, beta-cyclodextrin, citric acid, fly ash fibers, a quartz powder, a VAC / E latex powder, cement, oil shale residues, a naphthalene water reducing agent, a foaming agent, polystyrene and a proper amount of water. The desulphurization gypsum is used as a cementing material, so the light wall partition board has good cohesiveness, consumes a lot of desulfurization gypsum and other solid wastes, has the advantages of good water resistance, less investment and low cost, and is worthy of promotion.

The present invention reduces temperature gradient in the direction of the radius of solidified ingots of silicon immediately after solidification, which has serious influences on the quality as a solar cell and improves the quality. Silicon raw materials are melted inside a bottomless crucible combined with an induction coil by electromagnetic induction heating. The silicon melt formed inside the bottomless crucible is allowed to descend and solidified ingots of silicon are manufactured continuously. Plasma heating by a transferred plasma arc torch is also used for melting the silicon raw materials. The plasma arc torch is moved for scanning along the inner surface of the bottomless crucible in the horizontal direction. A plasma electrode on the solidified ingot side to generate transferred plasma arc is allowed to contact the surface of the solidified ingot at positions where the temperature of the solidified ingot becomes 500 to 900° C.

In the present invention, a substrate transfer unit from which a substrate is transferred from / to the outside of a treatment container and a developing treatment unit in which development of the substrate is performed are arranged side by side in the treatment container, and a carrier mechanism is provided which carries the substrate while grasping an outside surface of the substrate from both sides, between the substrate transfer unit and the developing treatment unit. A developing solution supply nozzle for supplying a developing solution onto the substrate and a gas blow nozzle for blowing a gas to the substrate, are provided between the substrate transfer unit and the developing treatment unit and above a carriage path along which the substrate is carried, and a cleaning solution supply nozzle is provided in the developing treatment unit for supplying a cleaning solution onto the substrate. According to the present invention, since the substrate is carried with its outside surface being grasped, spread of contamination can be prevented to restrain generation of particles in the treatment container.

The invention provides a method for preparing a carbon nanotube-reinforced iron-rich porous composite material through laser-induction composite cladding. The method is characterized by comprising the following steps: (1) mixing copper alloy powder, ferroalloy powder and a carbon nanotube and adding the obtained mixture into an acrylic resin to prepare slurry; (2) uniformly mixing the slurry by using a planetary ball mill, carrying out drying and then carrying out grinding to obtain carbon nanotube uniformly-distributed Cu-Fe-based composite powder; and (3) preparing a carbon nanotube-reinforced Cu-Fe-based composite material on the surface of a substrate through laser-induction composite cladding and carrying out selective electrochemical corrosion in a nitric acid solution so as to obtain the high-strength porous iron-rich composite material with a three-dimensional structure. According to the invention, the carbon nanotube with a high-melting point is used to inhibit convection of molten Cu-Fe-based composite powder, reduce the movement speed and particle size of spherical Fe-rich particles and improve structural segregation and layering of the Cu-Fe-based composite material. Thus, the crack-free high-strength porous iron-rich composite material with uniformly distributed carbon nanotubes can be prepared under the conditions of high efficiency and low cost.

The invention relates to a heat insulation structure of a solar thermal power generation high-temperature molten salt storage tank, which comprises a heat insulation layer, a reflecting layer, a composite functional layer and a protective layer. The reflecting layer is a polished aluminum foil (plate) or a stainless steel foil (plate), and the composite functional layer is made of phenolic aldehyde, polyurethane or tripolycyanamide by means of integral foaming. The invention further provides a preparation method for the heat insulation structure and application of the heat insulation structure. The heat insulation layer and the reflecting layer are constructed layer by layer, a support ring of the protective layer is machined according to the shape of the storage tank, and the protective layer serves as a formwork for casting the composite functional layer, so that the heat insulation structure of the storage tank is formed. The heat insulation structure of the storage tank is excellent in heat insulation effect and long in service life.

A sealing structure for a refrigerator comprises a blocking member provided inside an air dam having a predetermined width between a refrigerator cabinet and a door liner of a door, for preventing convection in the air dam, so that convection in the air dam is prevented and thus external heat is prevented from being introduced into a storage compartment through the air dam.

The object of the present invention is to provide a microstructure drying treatment method by which a substrate having a microstructure has a fine pattern of less than 30 nm and a large-caliber substrate of 100 mm or more can be dried uniformly and in a short time without generating pattern collapse, and its apparatus and its high pressure vessel. The present invention is a microstructure drying treatment method of introducing a fluid that is gas at normal temperature and pressure and is liquid under high pressure inside a high pressure vessel in which a substrate having a microstructure in a state immersed in or wet with a rinsing liquid in a liquid or supercritical state. The method forms a specific gravity difference between the rinsing liquid and fluid inside the high pressure vessel and collects the rinsing liquid to the upper side or lower side of the high pressure vessel by changing at least one side of the temperature and pressure of the fluid and changing the specific gravity of the fluid.

The invention relates to a doors and windows of buildings, in particular to natural veneer composite heat-insulating plastic steel doors and windows, which comprise plastic steel fan sections (2), wherein the plastic steel fan sections (2) are arranged in plastic steel frame sections (1) in a rotational mode; glass (3) is arranged in the plastic steel fan sections (2); natural veneers (5) are pasted on surfaces of indoor sides and / or outdoor sides of the plastic steel frame sections (1) and the plastic steel fan sections (2). According to the natural veneer composite heat-insulating plastic steel doors and windows, the natural veneers are pasted on surfaces of indoor sides and / or outdoor sides of the sections of the plastic steel doors and windows, so that the heat-insulating performance of the original plastic steel doors and windows is enhanced, the natural veneers have the natural textures of wood, and the natural veneer composite heat-insulating plastic steel doors and windows are attractive in appearance.

A drug delivery device (10) comprising a drug reservoir (13), at least one dispensing hole (14), an actuator system (17) and an exit path (15). The drug reservoir (13) is provided for comprising a drug. The dispensing hole (14) delivers the drug to an environment of the drug delivery device (10) when the actuator system (17) pushes the drug from the drug reservoir (13) through the dispensing hole (14). The exit path (15) couples the drug reservoir (13) to the dispensing hole (14). The exit path (15) comprises at least one entry point (16) for coupling the exit path (15) to the drug reservoir (13) and is arranged in such a way that for any possible orientation of the drug delivery device (10) at least a part of the exit path (15) is situated above the gravity center of said drug reservoir or below the dispensing hole (14).

The invention provides a manufacturing method of a fiber. By reducing pressure variation and gas flow variation of a fiber drawing furnace resulting from fiber drawing operation of glass base material so that a variation in the external diameter of the fiber is inhibited to be smaller. The manufacturing method is described in that the upper end of the glass base material (11) for the fiber with a necking portion (11c) at the upper portion is connected with a support rod (13); the fiber is formed by being drawn out through heating and melting of the glass base material for the fiber in the fiber drawing furnace; and the position where the necking portion of the glass base material for the fiber is provided with a part (25), the size of which is larger than or equal to 50% of space between the necking portion and a fuel core pipe so that the fiber is drawn out.

A method for manufacturing an electrode layer for a fuel cell includes applying a paste-form electrode material, having a solvent that includes an ion-exchange resin, to a sheet-form base, and evaporating the solvent on a front surface of a layer of the electrode material so that the concentration of the ion-exchange resin in the electrode material layer formed on the base increases from a front surface toward a reverse surface, opposed to the base, of the electrode material layer.

A photovoltaic energy storage device includes a battery module group, a battery switching device, an EMS controller, a direct current circuit breaker, an inverter and an alternating current circuit breaker. The battery module group, the battery switching device and the EMS controller are integrated in a first insulation compartment of the photovoltaic energy storage device; and the direct current circuit breaker, the inverter and the alternating current circuit breaker are integrated in a second insulation compartment of the photovoltaic energy storage device. A thermal-protective coating is arranged between the first insulation compartment and the second insulation compartment. Therefore, the integration of the photovoltaic energy storage device is divided into two parts, i.e., an integration at a battery side and an integration at an inverter side, and the thermal-protective coating is arranged, to prevent heat convection and heat exchange between the battery side and the inverter side.

The invention relates to a method for growing a phosphorus-silicon-cadmium single crystal. 1 part of silicon, 1 part of cadmium and 2-2.05 parts of phosphorus are synthesized into a phosphorus-silicon-cadmium polycrystal material, and the phosphorus-silicon-cadmium single crystal is grown by a crucible descending furnace by using a spontaneous nucleation growing method or oriented seed crystal growing method. The method comprises the following steps: directly filling the phosphorus-silicon-cadmium polycrystal material into a crucible, or filling the phosphorus-silicon-cadmium polycrystal material into the crucible after adding the seed crystal; putting the crucible into a silica tube, vacuumizing, and sealing the silica tube; putting the silica tube into a crucible descending furnace; and heating, descending the crucible, and finally cooling. The method provided by the invention can be used for preparing the high-purity high-quality phosphorus-silicon-cadmium single crystal.

By providing a length of not less than 100 mm to a tail portion to be formed following the cylindrical body portion in growing silicon single crystals having a cylindrical body portion with a diameter of 450 mm using the CZ method, it becomes possible to inhibit the occurrence of dislocations in the tail portion and thus achieve improvements in yield and productivity. A transverse magnetic field having an intensity of not less than 0.1 T is preferably applied on the occasion of formation of that tail portion.

An electrochemical cell for electrolytically contacting and electrochemically inspecting surfaces which makes electrolytic contact with the surface through a body utilizing capillary action. The capillary force between surface and body utilizing capillary action prevents the electrolyte from escaping from the cell without the use of a sealing ring. The body utilizing capillary action allows the electrolyte to flow from an open porous container and wet the surface when the electrochemical cell contacts the surface. Escape of material from the open cell is prevented by the capillary action of the container and of the tip when the electrochemical cell is lifted from the surface. The electrochemical cell is independent of the force of gravity and enables measurements to be made on surfaces of any orientation. The electrochemical cell may be used to perform a multiplicity of electrochemical investigations and processes. The electrochemical cell may be moved over the surface continuously, thereby allowing electrochemical investigations or processes to be performed with lateral resolution. Due to the use of a maintenance-free reference electrode, the electrochemical cell may prefabricated commercially in complete form and stored for extended periods of time after closing.

The invention relates to a method for preparing a monotectic alloy through casting by combining laser with high-intensity magnetic field, which is characterized by comprising the following steps: mixing the metal powder of all components of the monotectic alloy by mass percent according to the chemical components of the monotectic alloy to prepare the monotectic alloy powder with uniform particle size and good flowability; putting a copper casting mould with a circulating cooling water system in the center position of a high-intensity magnetic field device; and injecting the monotectic alloy powder into a CO2 laser beam heat source by a powder nozzle to melt the monotectic alloy powder quickly, wherein when the laser beam moves away, the molten monotectic alloy powder solidifies in the copper casting mould quickly, and the monotectic alloy is formed. According to the method, when the CO2 laser beam is used to heat and melt the monotectic alloy powder quickly, the high-intensity magnetic field is introduced, thus the convection of the melt is inhibited, the movement speed of the second-phase particles is reduced, and the tissue segregation and the hierarchical structure of the monotectic alloy are improved. Therefore, the method can be used for preparing the monotectic alloy with large size, uniform distribution of second-phase particles and high performance under the condition of high efficiency and low cost, and the problems that the monotectic alloy is hard to cast under the gravitational field condition, has nonuniform tissue distribution and is layered are solved.

The invention provides a climate adaptability transparent water storage enclosing structure for a low-energy-consumption building and an operation method and relates to the technical field of building energy saving and building enclosing structures. According to the transparent water storage enclosing structure for the low-energy-consumption building, the problems that as for an current building with a plurality of transparent enclosing structures, the comfort in summer and winter is poor, and energy consumption is high are solved. The transparent water storage enclosing structure for the low-energy-consumption building comprises transparent water storage modules, supporting connecting frames of the transparent water storage modules, an adjustable shading device, a water system pipeline, an outer layer transparent enclosing structure and an automatic control system, wherein the adjustable shading device and the water system pipeline are arranged on the outdoor sides, and the outer layer transparent enclosing structure and the automatic control system can be additionally arranged. The climate adaptability transparent water storage enclosing structure is mainly characterized in that the transparent water storage modules are used for water filling, and thus the thermal inertia and thermal storage property of the enclosing structure are strengthened; a flow resisting layer is used for restraining convection to enhance the thermotechnical efficiency of the transparent water storage modules; meanwhile, relying on simple adjustment of the adjustable shading device in summer and winter, when stored water is overheated in summer, the water is discharged and heat is dissipated, and in the extreme low temperature in winter, the water is discharged to form an air layer for heat preservation; and through reusing of returned water generated by gravity self-flowing and natural daylighting, the indoor thermal comfort is kept, and building energy consumption is reduced.

The invention relates to a distributor and a plate-fin heat exchanger with the same. The distributor comprises a distributor shell with an upper opening and a lower opening; a rectangular framework is arranged at the bottom of the distributor shell; a plurality of partition boards are vertically inserted into the distributor shell at intervals; the rectangular framework is divided into a plurality of air-phase channels through the partition boards; the distributor further comprises a liquid-phase channel; the liquid-phase channel is a rectangular pipe, is transversely arranged, and passes through the partition boards; liquid-phase inlets are formed in the distributor shell corresponding to the both ends of the liquid-phase channel; a liquid-phase inlet sealing head is arranged at the outer side of each liquid-phase inlet; a baffle partition part is arranged at the middle part inside the liquid-phase channel; a liquid outlet is formed at the top of the liquid channel between two adjacent partition boards; and a gas-liquid mixing channel is formed between the two partition boards above each liquid outlet. With the adoption of the distributor provided by the invention, the requirements of gas-liquid distribution and normal working in an offshore shaking condition can be met. The distributor can be widely applied to liquefied natural gas FPSO (Floating Production Storage and Offloading) in the offshore shaking condition.

The invention relates to a method for preparing honeycomb enhanced phenolic foam composite materials. The method is characterized by including the steps of: (1) pouring phenolic resin foam composite into a die; (2) vertically placing a honeycomb in the phenolic resin foam composite in the die; (3) placing the die with the phenolic resin foam composite and the honeycomb in the step (2) into a baking oven at the temperature of 50-100 DEG C for foaming for 5-10h, and obtaining the honeycomb enhanced phenolic foam composite material. Via one-time soaking and heating consolidation, the method is capable of preparing the honeycomb enhanced foam composite materials with phenolic foam ingredients in the honeycomb materials and phenolic foam filled in honeycomb lattice holes, the operation procedure is extremely simple, only the die and the baking oven are utilized as equipment, so that the method has the advantages of efficiency and low cost, meanwhile, the composite material products can be guaranteed to have the advantages of good combination properties like light weight, sound insulation, heat insulation, specific strength, specific modulus, water resistance and flame retardance.

The invention discloses a basalt fiber thermal insulation decorative integrated plate and a preparation method thereof, belonging to the technical field of building materials. According to the invention, carbon fiber and basalt fiber are taken as framework structural materials, modified SiO2 aerogel is taken as a heat insulation functional material, and inorganic fillers, adhesives and additives are combined to form the basalt fiber heat insulation decorative integrated plate. The basalt fiber thermal insulation decorative integrated plate can be used below 650 DEG C, has a thermal conductivity of about 0.02 W / (mK), is three to five times that of the traditional inorganic thermal insulation material, and can greatly improve the thermal insulation effect and high-temperature resistance.