264results 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 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.

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.

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 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.

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.

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).

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.

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.