253results about How to "Change area" patented technology

A single serve capsule (1) for the preparation of hot beverages such as coffee, cappuccino, tea or the like from soluble or ground preparations, having an outlet lid portion (1b) located on a dispensing wall (F) in order to form a dispensing opening (11) after a liquid has been introduced into the capsule, as well as means for changing the area of said dispensing opening during the dispensing step of the beverage.

An electrolyte membrane having a porous base material having pores filled with a first polymer capable of conducting a proton, wherein the porous base material comprises at least one second polymer selected from the group consisting of polyimides and polyamides; and a fuel cell, particularly a solid polymer fuel cell, more specifically a direct methanol polymer fuel cell, using the electrolyte membrane. The electrolyte membrane is excellent in the inhibition of permeation of methanol, exhibits no or reduced change in its area, and is excellent in proton conductivity.

An underground coal gasification method. The method comprises disposing multiple injection wells (3) and gas collection wells (4) in a gasification operation zone; adding a catalyst and a propping agent into injection wells and gas collection wells by means of a fluid medium; fracturing and reforming the coal layer using a fracturing device to form large areas of fissures and cracks; forming gasification paths in the form of directional wells between the injection wells and gas collection wells; adding a gasification agent, a catalyst, and water through the injection wells to cause coal layer combustions and chemical reactions; collecting at the gas collection wells the gas produced by means of collection devices. The fissure paths between the wells formed by reforming large fractures, and the metal mineral particles used as a propping agent for the paths between wells effectively enable the maintenance of the effective communication in the injection well network for long durations; the metal mineral particles also function as a catalyst and an aggregating agent during gasification, thereby substantially enhancing the coal gasification volume.

A magnetic field sensor that can be manufactured using the technology of surface micromechanics, having a conductor loop that has at least one deformable segment; a deformation device for deforming the deformable segment of the conductor loop with a predeterminable time dependence; a voltage sensing device for sensing the voltage induced at the ends of the conductor loop upon deformation in the presence of a magnetic field; and a magnetic field determining device for determining the present static and/or dynamic magnetic field in consideration of at least the time dependence of the deformation.

The invention relates to aircraft wings, in particular to deformable wings and a vertical take-off and landing aircraft using the wings. The technical problems that the wingspan area of a vertical take-off and landing aircraft is large at present, and the vertical take-off and landing aircraft is prone to being affected by wind power in the state of vertical take-off and landing so that the posture is unstable are solved. The deformable wings serve as an integrated airframe of the vertical take-off and landing aircraft. Each deformable wing comprises a wing leading edge and a wing trailing edge. Spreading and contracting between each wing leading edge and the corresponding wing trailing edge are achieved through a sliding assembly. A folding skin is connected between each wing leading edge and the corresponding wing trailing edge. According to the designed deformable wings, the size of the chord length can be expanded, contracted and changed, and the wing area is changed; meanwhile, the advantages of a fixed wing aircraft and the advantages of a multi-rotor-wing aircraft are combined, so that the function that the same aircraft can fly by arbitrarily switching two flight modes is achieved.

The invention discloses an aircraft air inlet with a bistable structure, and simultaneously relates to a design method of the bistable air inlet. The bistable structure area is designed differently according to different forms of aircraft air inlets. When an aircraft has an independent air inlet pipeline, the bistable structure can be arranged on the wall of the inlet pipeline; when the air inlet area of the aircraft is formed by an air inlet enclosure and an airframe bump profile, the bistable structure can be disposed in a bump area of the airframe bump profile. The design method designs the bistable structure area, and finally determines its structural parameters. The air inlet of the invention with a bistable and deformable structure realizes local concave-convex deformation of an air inlet, such as the compression profile of a bump air inlet, so that the throat area of the air inlet is changed, and the problem of an unadjustable compression profile of the bump air inlet is solved. Thus, under different flying states, the aircraft can have the optimal air inlet performance and inlet-engine matching property.

The invention discloses an organic modified bentonite and a preparation method thereof, and relates to an organic mineral and a preparation method thereof. 8-hydroxyquinoline is used as a modifying agent to modify calcium-based bentonite so as to prepare the modified bentonite-8-hydroxyquinoline modified bentonite. The preparation method for the 8- hydroxyquinoline modified bentonite comprises the following steps: firstly, processing raw soil; then, preparing solution of 8-hydroxyquinoline sodium hydroxide; and finally preparing the 8-hydroxyquinoline modified bentonite. The preparation method for the 8-hydroxyquinoline modified soil particularly comprises the following steps: adding distilled water into a certain amount of the bentonite, and stirring the mixture to prepare 15 percent soil suspension; adding 0.2 to 0.3 g/L solution of 8-hydroxyquinoline sodium hydroxide into the suspension for uniform mixing,; and stirring and heating for 60 minutes in a water bath, filtering, drying, grinding, and sifting through a 0.096 mm sieve to prepare the 8-hydroxyquinoline modified soil. The organic modified bentonite serving as an adhesive, a thickener, a purification decolorant, a catalyst and the like has quite wide application prospect in the fields of metallurgy, mechanical foundry, drilling, petrochemical engineering, agriculture, forestry, animal husbandry and the like.

The invention relates to a permanent magnet coupling mechanism between shafts. The permanent magnet coupling mechanism between the shafts is used for transmitting torque between the two rotating shafts. The mechanism comprises a permanent magnet rotor and a conductor rotor, wherein a conical air gap is formed between the permanent rotor and the conductor rotor. A permanent magnet on the permanent magnet rotor comprises main magnets and auxiliary magnets. The multiple main magnets are circumferentially distributed. A magnetizer made of permeability magnetic materials is arranged between every two adjacent main magnets. One auxiliary magnet is arranged on one side, away from the conductor rotor, of each magnetizer. The directions of the magnetic poles of the main magnets are located in the circumferential direction of the permanent magnet rotor. The directions of the magnetic poles of the adjacent main magnets are in the face-to-face direction or the back-to-back direction. The directions of the magnetic poles of the auxiliary magnets are the radial directions of the permanent magnet rotor. The directions of the magnetic poles of the adjacent auxiliary magnets are opposite. The magnetic poles of the positions of the side faces where the two main man magnets and one auxiliary magnet are contacted with the same magnetizer are respectively the same polarity. The permanent magnet coupling mechanism between the shafts is large in transmitting torque, adjustable in transmitting torque, compact in structure, convenient to install, and stable and reliable in transmission and adjustment.

An ink jet recording head having an array of ink ejection outlets in an ejection outlet forming surface on which a protection tape is stuck in transportation, wherein the ejection outlet forming surface has an outside area which is outside of each of opposite ends of the array with respect to a direction of the array, and the outside area has a peel resistance, provided by surface modification, which resistance is higher than in another portion of the ejection outlet forming surface.

The invention discloses a prefabricated and assembled tower crane foundation, which is formed by assembling concrete prefabricated parts, wherein the tower crane foundation comprises two groups of first prefabricated foundations which are parallel to each other in a transverse direction and two groups of second prefabricated foundations which are parallel to each other in a longitudinal direction; the two groups of first prefabricated foundations and the two groups of second prefabricated foundations are distributed in a grid-shaped manner, and are connected and locked through steel strands, the steel strands consist of two groups of first steel strands which are respectively arranged in the two groups of first prefabricated foundations and two groups of second steel strands which are respectively arranged in the two groups of second prefabricated foundations, and the two groups of first steel strands and the two groups of second steel strands are also distributed in a grid-shaped manner. The tower crane foundation can be recycled and has a larger contact area with the ground, and the steel strands are more uniformly distributed and dispersed in the foundation, so that the stress of the tower crane foundation is more uniform.

The embodiment of the invention provides electronic equipment. The electronic equipment comprises a shell and a display screen covering the shell, wherein the shell comprises a first shell part, a second shell part and a third shell part; when the electronic equipment is in a first state, the first shell part and the third shell part are spliced, the electronic equipment performs display through adisplay screen covering the first shell part and the third shell part, the first shell part and the third shell part form an accommodating space, and the second shell part is accommodated in the accommodating space; when the electronic equipment is in a second state, the first shell part, the second shell part and the third shell part are spliced, the second shell part is located between the first shell part and the third shell part, and the electronic equipment performs display through a display screen covering the first shell part, the second shell part and the third shell part. According to the electronic equipment, through contraction and extension of the shell, the available display area of the display screen is changed, the portability of the electronic equipment is improved, and meanwhile the use requirement of a user for the large display screen can be met.

The invention relates to a broadband electromagnetic wave absorbing material and particularly relates to a broadband electromagnetic wave absorbing material based on a polyaniline graphene three-dimensional porous structure. The wave absorbing material has a remarkable absorbing effect for incident electromagnetic waves in 4 to 18GHz frequency bands, the density is not larger than 25mg/cm3, and both the thickness and area are controllable. The density of the electromagnetic wave absorbing material is far smaller than that of wave absorbing materials such as carbonyl iron, carbon black and carbon fiber, the total mass per cubic metre is not larger than 25g, the reflectivity of the electromagnetic wave absorbing material for micro waves in a frequency range of 6 to 18GHz is lower than -10dB.

The invention relates to a dual-operation compression-ejection heat pump air conditioner system. The dual-operation compression-ejection heat pump air conditioner system comprises an ejector and two four-way reversing valves. An exhaust port of a compressor is connected with an inlet of an outdoor heat exchanger and an inlet of an indoor heat exchanger through the first four-way reversing valve. An outlet of the outdoor heat exchanger is connected with a work nozzle inlet and a suction chamber inlet of the ejector through the second four-way reversing valve. An outlet of the ejector is connected with an inlet of a gas-liquid separator through a pipeline. A gas outlet of the gas-liquid separator is connected with a gas inlet of the compressor through a pipeline. A liquid outlet of the gas-liquid separator is connected with an inlet of a throttle valve through a pipeline. An outlet of the throttle valve is connected with the inlet of the indoor heat exchanger and the inlet of the outdoor heat exchanger through the first four-way reversing valve. An outlet of the indoor heat exchanger is connected with the work nozzle inlet and the suction chamber inlet of the ejector through the second four-way reversing valve. The ejector is used for replacing an expansion valve to recycle expansion work, so that the refrigeration efficiency is improved, and the two four-way reversing valves are used for switching to achieve the refrigeration and heating dual-operation function.

The invention belongs to the technical field of aviation structural design, and relates to an adaptive bulging air inlet channel deformation driving device based on flexible skin. The driving device comprises an inflation pump (1), an inflation pipeline (2), an inflation valve (3), a deflation pipeline (4), a deflation valve (5), an inner-side sealing cavity (6), an outer-side sealing cavity (7), a pressure sensor (8), a flow sensor (9), a skin connecting belt (10) and a basic profile mounting region (11). According to the driving device, shape change of the bulging profile of an air inlet channel in a large range is realized by using a gas pressurizing way, and the shape of the bulging profile is controlled by using pressure and flow information, so that the throat area of the air inlet channel is changed, and the problem of non-adjustability of the profile of the bulging air inlet channel is solved.

The invention provides an aperture structure, a camera and an electronic device. The aperture structure comprises a substrate and a plurality of electrochromic units, wherein the plurality of electrochromic units are arranged on the substrate; and the plurality of electrochromic units are arranged in an array on the substrate, and each electrochromic unit is used for changing the light transmittance of the electrochromic unit after being applied with voltage, so as to change the light transmittance of the aperture structure. According to the aperture structure, the camera and the electronic device provided by the embodiment of the invention, the states of different electrochromic units can be changed according to requirements, so that the area of the light-transmitting part of the aperturestructure is changed, the controllability of the aperture structure is enhanced by adopting the plurality of electrochromic units, and the aperture structure can be conveniently arranged on electronic devices such as a mobile phone and a notebook computer.

The invention relates to a solar simulator optical device with variable radiation surface sizes and variable collimation angles. The light beam emitted by a spherical xenon lamp light source enters a light guide pipe after being reflected and focused by an ellipsoidal reflecting bowl, and then passes through a specific structure composed of two lenses to meet the radiation requirement of different radiation surface sizes and different radiation collimation degrees by changing the focal length of one lens or changing the focal length ratio of the two lenses. Meanwhile, the double-lens specific structure can transform radiation surface uniformity into radiation space uniformity. The solar simulator optical device provided by the invention can be applied to solar simulated radiation of areas with different sizes, and can also be applied to suitable occasions of a solar simulator with high requirement on collimation degree. In addition, the solar simulator optical device has the advantages of reasonable design, simple structure, convenience in specific measurement operation and high practicability.

The invention discloses an in-situ nitrogen-doped ultra large aperture mesoporous carbon material and a preparation method thereof. The aperture is concentrated between 17.4 and 26.8nm, the BET specific surface area is 428-984 m<2>/g, the pore volume is 0.72-2.38 cm<3>/g, the nitrogen element content is 4.17-4.63wt%, and the doping form of nitrogen atoms is pyridine nitrogen, pyrrole nitrogen or quaternary ammonium nitrogen. According to the preparation method, nitrogen-containing biopolymer chitosan is used as a carbon source, tetraethoxysilane (TEOS) is used as a silicon source, commercial surfactant F127 is used as a structure-directing agent, deionized water is used as a main solvent, the chitosan is combined with the hydrolyzed tetraethoxysilane into a high-polymerization hybrid material by using a sol-gel method, the hybrid material is assembled with the structure-directing agent F127 into a mesoporous structure via hydrogen bonding, and the mesoporous carbon material is obtained after template removal. The method is simple, the raw materials are readily available, and the aperture size can be adjusted.